CVE-2024-35785: tee: optee: Fix kernel panic caused by incorrect error handling

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-17 · updated 2026-08-04
Weakness: CWE-754

Description

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.

Affected products

Debian Linux: 10.0
Linux kernel: from 5.10.204 before 5.10.215; from 5.15.143 before 5.15.154; from 6.1.68 before 6.1.84; from 6.6.7 before 6.6.24; from 6.7.1 before 6.7.12; 6.7, 6.7-rc5, 6.7-rc6, 6.7-rc7, 6.7-rc8, 6.8-rc1 (+6) — fixed in 5.10.215, 5.15.154, 6.1.84, 6.6.24, 6.7.12

How to fix

Upgrade to a fixed version: Linux kernel 5.10.215, 5.15.154, 6.1.84, 6.6.24. Check the vendor advisory for mitigations.

References

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