CVE-2024-26852 (GCVE-0-2024-26852)
Vulnerability from cvelistv5
Published
2024-04-17 10:17
Modified
2025-05-04 08:57
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net/ipv6: avoid possible UAF in ip6_route_mpath_notify() syzbot found another use-after-free in ip6_route_mpath_notify() [1] Commit f7225172f25a ("net/ipv6: prevent use after free in ip6_route_mpath_notify") was not able to fix the root cause. We need to defer the fib6_info_release() calls after ip6_route_mpath_notify(), in the cleanup phase. [1] BUG: KASAN: slab-use-after-free in rt6_fill_node+0x1460/0x1ac0 Read of size 4 at addr ffff88809a07fc64 by task syz-executor.2/23037 CPU: 0 PID: 23037 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-01035-gea7f3cfaa588 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0x167/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x180 mm/kasan/report.c:601 rt6_fill_node+0x1460/0x1ac0 inet6_rt_notify+0x13b/0x290 net/ipv6/route.c:6184 ip6_route_mpath_notify net/ipv6/route.c:5198 [inline] ip6_route_multipath_add net/ipv6/route.c:5404 [inline] inet6_rtm_newroute+0x1d0f/0x2300 net/ipv6/route.c:5517 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f73dd87dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f73de6550c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f73dd9ac050 RCX: 00007f73dd87dda9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005 RBP: 00007f73dd8ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f73dd9ac050 R15: 00007ffdbdeb7858 </TASK> Allocated by task 23037: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:372 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:3981 [inline] __kmalloc+0x22e/0x490 mm/slub.c:3994 kmalloc include/linux/slab.h:594 [inline] kzalloc include/linux/slab.h:711 [inline] fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155 ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3758 ip6_route_multipath_add net/ipv6/route.c:5298 [inline] inet6_rtm_newroute+0x744/0x2300 net/ipv6/route.c:5517 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 Freed by task 16: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:640 poison_slab_object+0xa6/0xe0 m ---truncated---
References
Impacted products
Vendor Product Version
Linux Linux Version: 3b1137fe74829e021f483756a648cbb87c8a1b4a
Version: 3b1137fe74829e021f483756a648cbb87c8a1b4a
Version: 3b1137fe74829e021f483756a648cbb87c8a1b4a
Version: 3b1137fe74829e021f483756a648cbb87c8a1b4a
Version: 3b1137fe74829e021f483756a648cbb87c8a1b4a
Version: 3b1137fe74829e021f483756a648cbb87c8a1b4a
Version: 3b1137fe74829e021f483756a648cbb87c8a1b4a
Version: 3b1137fe74829e021f483756a648cbb87c8a1b4a
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/ipv6: avoid possible UAF in ip6_route_mpath_notify()\n\nsyzbot found another use-after-free in ip6_route_mpath_notify() [1]\n\nCommit f7225172f25a (\"net/ipv6: prevent use after free in\nip6_route_mpath_notify\") was not able to fix the root cause.\n\nWe need to defer the fib6_info_release() calls after\nip6_route_mpath_notify(), in the cleanup phase.\n\n[1]\nBUG: KASAN: slab-use-after-free in rt6_fill_node+0x1460/0x1ac0\nRead of size 4 at addr ffff88809a07fc64 by task syz-executor.2/23037\n\nCPU: 0 PID: 23037 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-01035-gea7f3cfaa588 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024\nCall Trace:\n \u003cTASK\u003e\n  __dump_stack lib/dump_stack.c:88 [inline]\n  dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106\n  print_address_description mm/kasan/report.c:377 [inline]\n  print_report+0x167/0x540 mm/kasan/report.c:488\n  kasan_report+0x142/0x180 mm/kasan/report.c:601\n rt6_fill_node+0x1460/0x1ac0\n  inet6_rt_notify+0x13b/0x290 net/ipv6/route.c:6184\n  ip6_route_mpath_notify net/ipv6/route.c:5198 [inline]\n  ip6_route_multipath_add net/ipv6/route.c:5404 [inline]\n  inet6_rtm_newroute+0x1d0f/0x2300 net/ipv6/route.c:5517\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n  ___sys_sendmsg net/socket.c:2638 [inline]\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n do_syscall_64+0xf9/0x240\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\nRIP: 0033:0x7f73dd87dda9\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f73de6550c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 00007f73dd9ac050 RCX: 00007f73dd87dda9\nRDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005\nRBP: 00007f73dd8ca47a R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 000000000000006e R14: 00007f73dd9ac050 R15: 00007ffdbdeb7858\n \u003c/TASK\u003e\n\nAllocated by task 23037:\n  kasan_save_stack mm/kasan/common.c:47 [inline]\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\n  poison_kmalloc_redzone mm/kasan/common.c:372 [inline]\n  __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389\n  kasan_kmalloc include/linux/kasan.h:211 [inline]\n  __do_kmalloc_node mm/slub.c:3981 [inline]\n  __kmalloc+0x22e/0x490 mm/slub.c:3994\n  kmalloc include/linux/slab.h:594 [inline]\n  kzalloc include/linux/slab.h:711 [inline]\n  fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155\n  ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3758\n  ip6_route_multipath_add net/ipv6/route.c:5298 [inline]\n  inet6_rtm_newroute+0x744/0x2300 net/ipv6/route.c:5517\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\n  sock_sendmsg_nosec net/socket.c:730 [inline]\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\n  ___sys_sendmsg net/socket.c:2638 [inline]\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\n do_syscall_64+0xf9/0x240\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\n\nFreed by task 16:\n  kasan_save_stack mm/kasan/common.c:47 [inline]\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\n  kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:640\n  poison_slab_object+0xa6/0xe0 m\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:57:58.505Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/31ea5bcc7d4cd1423de6be327a2c034725704136"
        },
        {
          "url": "https://git.kernel.org/stable/c/664f9c647260cc9d68b4e31d9899530d89dd045e"
        },
        {
          "url": "https://git.kernel.org/stable/c/79ce2e54cc0ae366f45516c00bf1b19aa43e9abe"
        },
        {
          "url": "https://git.kernel.org/stable/c/cae3303257950d03ffec2df4a45e836f10d26c24"
        },
        {
          "url": "https://git.kernel.org/stable/c/394334fe2ae3b9f1e2332b873857e84cb28aac18"
        },
        {
          "url": "https://git.kernel.org/stable/c/ed883060c38721ed828061f6c0c30e5147326c9a"
        },
        {
          "url": "https://git.kernel.org/stable/c/61b34f73cdbdb8eaf9ea12e9e2eb3b29716c4dda"
        },
        {
          "url": "https://git.kernel.org/stable/c/685f7d531264599b3f167f1e94bbd22f120e5fab"
        }
      ],
      "title": "net/ipv6: avoid possible UAF in ip6_route_mpath_notify()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26852",
    "datePublished": "2024-04-17T10:17:15.923Z",
    "dateReserved": "2024-02-19T14:20:24.183Z",
    "dateUpdated": "2025-05-04T08:57:58.505Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/31ea5bcc7d4cd1423de6be327a2c034725704136\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/664f9c647260cc9d68b4e31d9899530d89dd045e\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/79ce2e54cc0ae366f45516c00bf1b19aa43e9abe\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/cae3303257950d03ffec2df4a45e836f10d26c24\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/394334fe2ae3b9f1e2332b873857e84cb28aac18\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ed883060c38721ed828061f6c0c30e5147326c9a\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/61b34f73cdbdb8eaf9ea12e9e2eb3b29716c4dda\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/685f7d531264599b3f167f1e94bbd22f120e5fab\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:14:13.699Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26852\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-04-19T20:41:29.771297Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"3b1137fe7482\", \"lessThan\": \"31ea5bcc7d4c\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"3b1137fe7482\", \"lessThan\": \"664f9c647260\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"3b1137fe7482\", \"lessThan\": \"79ce2e54cc0a\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"3b1137fe7482\", \"lessThan\": \"cae330325795\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"3b1137fe7482\", \"lessThan\": \"394334fe2ae3\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"3b1137fe7482\", \"lessThan\": \"ed883060c387\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"3b1137fe7482\", \"lessThan\": \"61b34f73cdbd\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"3b1137fe7482\", \"lessThan\": \"685f7d531264\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"4.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.11\", \"versionType\": \"custom\"}, {\"status\": \"unaffected\", \"version\": \"4.19.310\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"4.20\"}, {\"status\": \"unaffected\", \"version\": \"5.4.272\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.5\"}, {\"status\": \"unaffected\", \"version\": \"5.10.213\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.11\"}, {\"status\": \"unaffected\", \"version\": \"5.15.152\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.16\"}, {\"status\": \"unaffected\", \"version\": \"6.1.82\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.2\"}, {\"status\": \"unaffected\", \"version\": \"6.6.22\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.7\"}, {\"status\": \"unaffected\", \"version\": \"6.7.10\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.8\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"*\"}], \"defaultStatus\": \"unknown\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-04-19T20:36:27.252Z\"}}], \"cna\": {\"title\": \"net/ipv6: avoid possible UAF in ip6_route_mpath_notify()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3b1137fe74829e021f483756a648cbb87c8a1b4a\", \"lessThan\": \"31ea5bcc7d4cd1423de6be327a2c034725704136\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3b1137fe74829e021f483756a648cbb87c8a1b4a\", \"lessThan\": \"664f9c647260cc9d68b4e31d9899530d89dd045e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3b1137fe74829e021f483756a648cbb87c8a1b4a\", \"lessThan\": \"79ce2e54cc0ae366f45516c00bf1b19aa43e9abe\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3b1137fe74829e021f483756a648cbb87c8a1b4a\", \"lessThan\": \"cae3303257950d03ffec2df4a45e836f10d26c24\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3b1137fe74829e021f483756a648cbb87c8a1b4a\", \"lessThan\": \"394334fe2ae3b9f1e2332b873857e84cb28aac18\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3b1137fe74829e021f483756a648cbb87c8a1b4a\", \"lessThan\": \"ed883060c38721ed828061f6c0c30e5147326c9a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3b1137fe74829e021f483756a648cbb87c8a1b4a\", \"lessThan\": \"61b34f73cdbdb8eaf9ea12e9e2eb3b29716c4dda\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3b1137fe74829e021f483756a648cbb87c8a1b4a\", \"lessThan\": \"685f7d531264599b3f167f1e94bbd22f120e5fab\", \"versionType\": \"git\"}], \"programFiles\": [\"net/ipv6/route.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.310\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.272\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.213\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.152\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.82\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.22\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/ipv6/route.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/31ea5bcc7d4cd1423de6be327a2c034725704136\"}, {\"url\": \"https://git.kernel.org/stable/c/664f9c647260cc9d68b4e31d9899530d89dd045e\"}, {\"url\": \"https://git.kernel.org/stable/c/79ce2e54cc0ae366f45516c00bf1b19aa43e9abe\"}, {\"url\": \"https://git.kernel.org/stable/c/cae3303257950d03ffec2df4a45e836f10d26c24\"}, {\"url\": \"https://git.kernel.org/stable/c/394334fe2ae3b9f1e2332b873857e84cb28aac18\"}, {\"url\": \"https://git.kernel.org/stable/c/ed883060c38721ed828061f6c0c30e5147326c9a\"}, {\"url\": \"https://git.kernel.org/stable/c/61b34f73cdbdb8eaf9ea12e9e2eb3b29716c4dda\"}, {\"url\": \"https://git.kernel.org/stable/c/685f7d531264599b3f167f1e94bbd22f120e5fab\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/ipv6: avoid possible UAF in ip6_route_mpath_notify()\\n\\nsyzbot found another use-after-free in ip6_route_mpath_notify() [1]\\n\\nCommit f7225172f25a (\\\"net/ipv6: prevent use after free in\\nip6_route_mpath_notify\\\") was not able to fix the root cause.\\n\\nWe need to defer the fib6_info_release() calls after\\nip6_route_mpath_notify(), in the cleanup phase.\\n\\n[1]\\nBUG: KASAN: slab-use-after-free in rt6_fill_node+0x1460/0x1ac0\\nRead of size 4 at addr ffff88809a07fc64 by task syz-executor.2/23037\\n\\nCPU: 0 PID: 23037 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-01035-gea7f3cfaa588 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024\\nCall Trace:\\n \u003cTASK\u003e\\n  __dump_stack lib/dump_stack.c:88 [inline]\\n  dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106\\n  print_address_description mm/kasan/report.c:377 [inline]\\n  print_report+0x167/0x540 mm/kasan/report.c:488\\n  kasan_report+0x142/0x180 mm/kasan/report.c:601\\n rt6_fill_node+0x1460/0x1ac0\\n  inet6_rt_notify+0x13b/0x290 net/ipv6/route.c:6184\\n  ip6_route_mpath_notify net/ipv6/route.c:5198 [inline]\\n  ip6_route_multipath_add net/ipv6/route.c:5404 [inline]\\n  inet6_rtm_newroute+0x1d0f/0x2300 net/ipv6/route.c:5517\\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\\n  ___sys_sendmsg net/socket.c:2638 [inline]\\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\\n do_syscall_64+0xf9/0x240\\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\\nRIP: 0033:0x7f73dd87dda9\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f73de6550c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\nRAX: ffffffffffffffda RBX: 00007f73dd9ac050 RCX: 00007f73dd87dda9\\nRDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005\\nRBP: 00007f73dd8ca47a R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 000000000000006e R14: 00007f73dd9ac050 R15: 00007ffdbdeb7858\\n \u003c/TASK\u003e\\n\\nAllocated by task 23037:\\n  kasan_save_stack mm/kasan/common.c:47 [inline]\\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n  poison_kmalloc_redzone mm/kasan/common.c:372 [inline]\\n  __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389\\n  kasan_kmalloc include/linux/kasan.h:211 [inline]\\n  __do_kmalloc_node mm/slub.c:3981 [inline]\\n  __kmalloc+0x22e/0x490 mm/slub.c:3994\\n  kmalloc include/linux/slab.h:594 [inline]\\n  kzalloc include/linux/slab.h:711 [inline]\\n  fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155\\n  ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3758\\n  ip6_route_multipath_add net/ipv6/route.c:5298 [inline]\\n  inet6_rtm_newroute+0x744/0x2300 net/ipv6/route.c:5517\\n  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597\\n  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543\\n  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]\\n  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367\\n  netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908\\n  sock_sendmsg_nosec net/socket.c:730 [inline]\\n  __sock_sendmsg+0x221/0x270 net/socket.c:745\\n  ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584\\n  ___sys_sendmsg net/socket.c:2638 [inline]\\n  __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667\\n do_syscall_64+0xf9/0x240\\n entry_SYSCALL_64_after_hwframe+0x6f/0x77\\n\\nFreed by task 16:\\n  kasan_save_stack mm/kasan/common.c:47 [inline]\\n  kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n  kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:640\\n  poison_slab_object+0xa6/0xe0 m\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.310\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.272\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.213\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.152\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.82\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.22\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.10\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"4.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:57:58.505Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26852\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:57:58.505Z\", \"dateReserved\": \"2024-02-19T14:20:24.183Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-17T10:17:15.923Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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