# CVE-2026-68444: firmware: arm_ffa: Fix NULL dereference in ffa_partition_info_get()

Status: published. Published: 2026-08-12. Updated: 2026-11-06.

In the Linux kernel, the following vulnerability has been resolved:

firmware: arm_ffa: Fix NULL dereference in ffa_partition_info_get()

ffa_partition_info_get() passes uuid_str directly to uuid_parse()
without a NULL check. When a caller passes NULL, uuid_parse() ->
__uuid_parse() -> uuid_is_valid() dereferences the pointer, causing
a kernel panic:

  |  Unable to handle kernel NULL pointer dereference at virtual address
  |  0000000000000040
  |  pc : uuid_parse+0x40/0xac
  |  lr : ffa_partition_info_get+0x1c/0x94 [arm_ffa]

Add a NULL guard before uuid_parse() so a NULL argument returns
-ENODEV instead of crashing. Callers are expected to always supply
a valid partition UUID, so NULL is not a supported input.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ d0c0bce831223b08e5bade2cefc93c3ddb790796; < 7dfb020e3048411fbca91e9ad6174da9a2d3e2b3 (affected, git); ≥ d0c0bce831223b08e5bade2cefc93c3ddb790796; < ddf85f0c32e05baafbd9c3a44859858db90eec48 (affected, git); ≥ d0c0bce831223b08e5bade2cefc93c3ddb790796; < 86f5ea90f73bb7154593bb96f3411e197f3d4fbe (affected, git); ≥ d0c0bce831223b08e5bade2cefc93c3ddb790796; < 7201e56e52d18abf4cd0a2fee45daf9dc08b5b97 (affected, git); ≥ d0c0bce831223b08e5bade2cefc93c3ddb790796; < 996c5c19d5b5ac5b98a7b5a406b548305841c301 (affected, git); ≥ d0c0bce831223b08e5bade2cefc93c3ddb790796; < 12a42c610e4432e7708cc48d607e5903fffe0aad (affected, git); ≥ d0c0bce831223b08e5bade2cefc93c3ddb790796; < 8ae5f8e4836667fcaffdf2e3c6068b0a8b364dd8 (affected, git). Source: CNA: Linux
- Linux / Linux: 5.14 (affected); ≥ 0; < 5.14 (unaffected, semver); ≥ 5.15.216; ≤ 5.15.* (unaffected, semver); ≥ 6.1.183; ≤ 6.1.* (unaffected, semver); ≥ 6.6.148; ≤ 6.6.* (unaffected, semver); ≥ 6.12.101; ≤ 6.12.* (unaffected, semver); ≥ 6.18.42; ≤ 6.18.* (unaffected, semver); ≥ 7.1.6; ≤ 7.1.* (unaffected, semver); ≥ 7.2; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.17% as of 2026-11-06; percentile 6.81%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/7dfb020e3048411fbca91e9ad6174da9a2d3e2b3 (CNA: Linux)

- https://git.kernel.org/stable/c/ddf85f0c32e05baafbd9c3a44859858db90eec48 (CNA: Linux)

- https://git.kernel.org/stable/c/86f5ea90f73bb7154593bb96f3411e197f3d4fbe (CNA: Linux)

- https://git.kernel.org/stable/c/7201e56e52d18abf4cd0a2fee45daf9dc08b5b97 (CNA: Linux)

- https://git.kernel.org/stable/c/996c5c19d5b5ac5b98a7b5a406b548305841c301 (CNA: Linux)

- https://git.kernel.org/stable/c/12a42c610e4432e7708cc48d607e5903fffe0aad (CNA: Linux)

- https://git.kernel.org/stable/c/8ae5f8e4836667fcaffdf2e3c6068b0a8b364dd8 (CNA: Linux)

- https://git.kernel.org/stable/c/12a42c610e4432e7708cc48d607e5903fffe0aad (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/7201e56e52d18abf4cd0a2fee45daf9dc08b5b97 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/7dfb020e3048411fbca91e9ad6174da9a2d3e2b3 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/86f5ea90f73bb7154593bb96f3411e197f3d4fbe (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/8ae5f8e4836667fcaffdf2e3c6068b0a8b364dd8 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/996c5c19d5b5ac5b98a7b5a406b548305841c301 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/ddf85f0c32e05baafbd9c3a44859858db90eec48 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-68444; retrieved 2026-11-06; source updated 2026-11-06

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-68444; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-68444; retrieved 2026-11-06; source updated Not reported

Revision: eb66e148467a6ff01241adf96e1c02b8bbd8de3d8a6d3a5bc3ce979aa9ec02b3

Canonical: https://y2.dev/cve/CVE-2026-68444

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