CVE-2024-35785 (GCVE-0-2024-35785)
Vulnerability from cvelistv5
Published
2024-05-17 12:24
Modified
2026-08-05 11:29
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: tee: optee: Fix kernel panic caused by incorrect error handling The error path while failing to register devices on the TEE bus has a bug leading to kernel panic as follows: [ 15.398930] Unable to handle kernel paging request at virtual address ffff07ed00626d7c [ 15.406913] Mem abort info: [ 15.409722] ESR = 0x0000000096000005 [ 15.413490] EC = 0x25: DABT (current EL), IL = 32 bits [ 15.418814] SET = 0, FnV = 0 [ 15.421878] EA = 0, S1PTW = 0 [ 15.425031] FSC = 0x05: level 1 translation fault [ 15.429922] Data abort info: [ 15.432813] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 [ 15.438310] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 15.443372] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 15.448697] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000d9e3e000 [ 15.455413] [ffff07ed00626d7c] pgd=1800000bffdf9003, p4d=1800000bffdf9003, pud=0000000000000000 [ 15.464146] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Commit 7269cba53d90 ("tee: optee: Fix supplicant based device enumeration") lead to the introduction of this bug. So fix it appropriately.
References
Impacted products
Vendor Product Version
Linux Linux Version: a953e45ebeae9a5ce342c012f7eb2a92cc8af89b
Version: 01c13d8a95e0909f0081d6e3e8a891761992371b
Version: 1c9561b438cbe61e78515fc7b16dc7fb8cf0b763
Version: d3c4786b01aad8c377718f92d6d9b15906ee0a2a
Version: 7269cba53d906cf257c139d3b3a53ad272176bca
Version: 7269cba53d906cf257c139d3b3a53ad272176bca
Version: 5.10.204   ≤
Version: 5.15.143   ≤
Version: 6.1.68   ≤
Version: 6.6.7   ≤
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The vulnerable code is reached only by opening the local character device /dev/teepriv0, which schedules optee_bus_scan() \\u2192 optee_enumerate_devices(PTA_CMD_GET_DEVICES_SUPP); there is no network or remote-peer input anywhere on the path.\\nAC:L - On an affected platform the device_register() failure is deterministic (the reporter hit the panic on every boot at ~15s), so an attacker who triggers the supplicant enumeration reliably lands on the use-after-free; the freed slab object is a generic GFP_KERNEL kmalloc allocation that can be sprayed from userspace, and the failure can additionally be induced via attacker-generated memory pressure (-ENOMEM in kobject_add/kernfs).\\nPR:L - The kernel imposes no capability or permission check in tee_open()/optee_open() for the privileged node \\u2014 access is governed purely by udev/DAC, and OP-TEE\u0027s shipped rules expose teepriv[0-9]* at mode 0660 with a group plus TAG+=\\\"uaccess\\\", so an ordinary local user in the teepriv group or at the local seat can open it and trigger the scan.\\nUI:N - The attacker opens /dev/teepriv0 themselves to schedule the bus-scan work; no victim action is required, and in the natural case the crash occurs unattended when the tee-supplicant system daemon starts at boot.\\nS:U - The freed object and all corrupted structures (struct tee_client_device, kobject, kernfs nodes) live in normal kernel memory under the same security authority; nothing crosses into the secure world, a hypervisor, or an IOMMU boundary.\\nC:H - The use-after-free dereferences attacker-groomable freed memory through a chain of pointers (kobj-\u003esd \\u2192 parent-\u003epriv \\u2192 kobj-\u003ektype-\u003esysfs_ops), giving a controllable read primitive over arbitrary kernel addresses once the slab object is reallocated with attacker data.\\nI:H - The same UAF drives __kernfs_create_file() and kobject_get_ownership() through attacker-controlled pointers, producing writes into attacker-chosen addresses (kernfs rbtree links, parent-\u003edir.subdirs) and an indirect call via ktype-\u003eget_ownership \\u2014 sufficient for control-flow hijack and privilege escalation.\\nA:H - The bug is a confirmed kernel panic (Oops with a level-1 translation fault in the optee_bus_scan kworker), and on affected platforms it reproduces every boot, rendering the system unusable.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"a953e45ebeae9a5ce342c012f7eb2a92cc8af89b\", \"lessThan\": \"bc40ded92af55760d12bec8222d4108de725dbe4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"01c13d8a95e0909f0081d6e3e8a891761992371b\", \"lessThan\": \"4b12ff5edd141926d49c9ace4791adf3a4902fe7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1c9561b438cbe61e78515fc7b16dc7fb8cf0b763\", \"lessThan\": \"e5b5948c769aa1ebf962dddfb972f87d8f166f95\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d3c4786b01aad8c377718f92d6d9b15906ee0a2a\", \"lessThan\": \"520f79c110ff712b391b3d87fcacf03c74bc56ee\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7269cba53d906cf257c139d3b3a53ad272176bca\", \"lessThan\": \"bfa344afbe472a9be08f78551fa2190c1a07d7d3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7269cba53d906cf257c139d3b3a53ad272176bca\", \"lessThan\": \"95915ba4b987cf2b222b0f251280228a1ff977ac\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.10.204\", \"lessThan\": \"5.10.215\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.15.143\", \"lessThan\": \"5.15.154\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.1.68\", \"lessThan\": \"6.1.84\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.6.7\", \"lessThan\": \"6.6.24\", \"versionType\": \"semver\"}], \"programFiles\": [\"drivers/tee/optee/device.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.7\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.7\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.215\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.154\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.84\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.24\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/tee/optee/device.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/bc40ded92af55760d12bec8222d4108de725dbe4\"}, {\"url\": \"https://git.kernel.org/stable/c/4b12ff5edd141926d49c9ace4791adf3a4902fe7\"}, {\"url\": \"https://git.kernel.org/stable/c/e5b5948c769aa1ebf962dddfb972f87d8f166f95\"}, {\"url\": \"https://git.kernel.org/stable/c/520f79c110ff712b391b3d87fcacf03c74bc56ee\"}, {\"url\": \"https://git.kernel.org/stable/c/bfa344afbe472a9be08f78551fa2190c1a07d7d3\"}, {\"url\": \"https://git.kernel.org/stable/c/95915ba4b987cf2b222b0f251280228a1ff977ac\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntee: optee: Fix kernel panic caused by incorrect error handling\\n\\nThe error path while failing to register devices on the TEE bus has a\\nbug leading to kernel panic as follows:\\n\\n[   15.398930] Unable to handle kernel paging request at virtual address ffff07ed00626d7c\\n[   15.406913] Mem abort info:\\n[   15.409722]   ESR = 0x0000000096000005\\n[   15.413490]   EC = 0x25: DABT (current EL), IL = 32 bits\\n[   15.418814]   SET = 0, FnV = 0\\n[   15.421878]   EA = 0, S1PTW = 0\\n[   15.425031]   FSC = 0x05: level 1 translation fault\\n[   15.429922] Data abort info:\\n[   15.432813]   ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000\\n[   15.438310]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\\n[   15.443372]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\\n[   15.448697] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000d9e3e000\\n[   15.455413] [ffff07ed00626d7c] pgd=1800000bffdf9003, p4d=1800000bffdf9003, pud=0000000000000000\\n[   15.464146] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP\\n\\nCommit 7269cba53d90 (\\\"tee: optee: Fix supplicant based device enumeration\\\")\\nlead to the introduction of this bug. So fix it appropriately.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.215\", \"versionStartIncluding\": \"5.10.204\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.154\", \"versionStartIncluding\": \"5.15.143\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.84\", \"versionStartIncluding\": \"6.1.68\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.24\", \"versionStartIncluding\": \"6.6.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.12\", \"versionStartIncluding\": \"6.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"6.7\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:29:53.994Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-35785\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:29:53.994Z\", \"dateReserved\": \"2024-05-17T12:19:12.338Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-17T12:24:28.069Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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