CVE-2022-48651 (GCVE-0-2022-48651)
Vulnerability from cvelistv5
Published
2024-04-28 13:00
Modified
2025-05-04 08:20
Severity ?
7.7 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ipvlan: Fix out-of-bound bugs caused by unset skb->mac_header If an AF_PACKET socket is used to send packets through ipvlan and the default xmit function of the AF_PACKET socket is changed from dev_queue_xmit() to packet_direct_xmit() via setsockopt() with the option name of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset and remains as the initial value of 65535, this may trigger slab-out-of-bounds bugs as following: ================================================================= UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan] PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6 ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 all Trace: print_address_description.constprop.0+0x1d/0x160 print_report.cold+0x4f/0x112 kasan_report+0xa3/0x130 ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan] ipvlan_start_xmit+0x29/0xa0 [ipvlan] __dev_direct_xmit+0x2e2/0x380 packet_direct_xmit+0x22/0x60 packet_snd+0x7c9/0xc40 sock_sendmsg+0x9a/0xa0 __sys_sendto+0x18a/0x230 __x64_sys_sendto+0x74/0x90 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd The root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn't reset skb->mac_header as dev_queue_xmit() In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() is called. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() which use "skb->head + skb->mac_header", out-of-bound access occurs. This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2() and reset mac header in multicast to solve this out-of-bound bug.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2ad7bf3638411cb547f2823df08166c13ab04269
Version: 2ad7bf3638411cb547f2823df08166c13ab04269
Version: 2ad7bf3638411cb547f2823df08166c13ab04269
Version: 2ad7bf3638411cb547f2823df08166c13ab04269
Version: 2ad7bf3638411cb547f2823df08166c13ab04269
Version: 2ad7bf3638411cb547f2823df08166c13ab04269
Version: 2ad7bf3638411cb547f2823df08166c13ab04269
Version: 2ad7bf3638411cb547f2823df08166c13ab04269
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\"lessThan\": \"8d06006c7eb75587d986da46c48ba9274f94e8e7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2ad7bf3638411cb547f2823df08166c13ab04269\", \"lessThan\": \"b583e6b25bf9321c91154f6c78d2173ef12c4241\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2ad7bf3638411cb547f2823df08166c13ab04269\", \"lessThan\": \"81225b2ea161af48e093f58e8dfee6d705b16af4\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/ipvlan/ipvlan_core.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.19\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.19\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.9.330\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.9.*\"}, {\"status\": \"unaffected\", \"version\": \"4.14.295\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.260\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.215\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.146\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.71\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.19.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.19.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ipvlan/ipvlan_core.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/e2b46cd5796f083e452fbc624f65b80328b0c1a4\"}, {\"url\": \"https://git.kernel.org/stable/c/25efdbe5fe542c3063d1948cc4e98abcb57621ca\"}, {\"url\": \"https://git.kernel.org/stable/c/bffcdade259c05ab3436b5fab711612093c275ef\"}, {\"url\": \"https://git.kernel.org/stable/c/346e94aa4a99378592c46d6a34c72703a32bd5be\"}, {\"url\": \"https://git.kernel.org/stable/c/ab4a733874ead120691e8038272d22f8444d3638\"}, {\"url\": \"https://git.kernel.org/stable/c/8d06006c7eb75587d986da46c48ba9274f94e8e7\"}, {\"url\": \"https://git.kernel.org/stable/c/b583e6b25bf9321c91154f6c78d2173ef12c4241\"}, {\"url\": \"https://git.kernel.org/stable/c/81225b2ea161af48e093f58e8dfee6d705b16af4\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipvlan: Fix out-of-bound bugs caused by unset skb-\u003emac_header\\n\\nIf an AF_PACKET socket is used to send packets through ipvlan and the\\ndefault xmit function of the AF_PACKET socket is changed from\\ndev_queue_xmit() to packet_direct_xmit() via setsockopt() with the option\\nname of PACKET_QDISC_BYPASS, the skb-\u003emac_header may not be reset and\\nremains as the initial value of 65535, this may trigger slab-out-of-bounds\\nbugs as following:\\n\\n=================================================================\\nUG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]\\nPU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6\\nardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33\\nall Trace:\\nprint_address_description.constprop.0+0x1d/0x160\\nprint_report.cold+0x4f/0x112\\nkasan_report+0xa3/0x130\\nipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]\\nipvlan_start_xmit+0x29/0xa0 [ipvlan]\\n__dev_direct_xmit+0x2e2/0x380\\npacket_direct_xmit+0x22/0x60\\npacket_snd+0x7c9/0xc40\\nsock_sendmsg+0x9a/0xa0\\n__sys_sendto+0x18a/0x230\\n__x64_sys_sendto+0x74/0x90\\ndo_syscall_64+0x3b/0x90\\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\\n\\nThe root cause is:\\n  1. packet_snd() only reset skb-\u003emac_header when sock-\u003etype is SOCK_RAW\\n     and skb-\u003eprotocol is not specified as in packet_parse_headers()\\n\\n  2. packet_direct_xmit() doesn\u0027t reset skb-\u003emac_header as dev_queue_xmit()\\n\\nIn this case, skb-\u003emac_header is 65535 when ipvlan_xmit_mode_l2() is\\ncalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() which\\nuse \\\"skb-\u003ehead + skb-\u003emac_header\\\", out-of-bound access occurs.\\n\\nThis patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()\\nand reset mac header in multicast to solve this out-of-bound bug.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.330\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.295\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.260\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.215\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.146\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.71\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19.12\", \"versionStartIncluding\": \"3.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0\", \"versionStartIncluding\": \"3.19\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:20:35.610Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48651\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:20:35.610Z\", \"dateReserved\": \"2024-02-25T13:44:28.317Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-28T13:00:42.929Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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