Riskcovery

CVE-2026-97916

accel/ivpu: Validate firmware log buffer metadata

State
Published
Severity
Not scored
Published
Sep 25, 2026
Updated
Oct 21, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

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

accel/ivpu: Validate firmware log buffer metadata

The tracing log headers parsed by fw_log_print_buffer() reside in DMA-shared BOs that the NPU firmware can write to.

fw_log_from_bo() validated log->header_size and log->size, but fw_log_print_buffer() re-read those same fields from shared memory afterwards, allowing a TOCTOU where firmware changes them between the check and the use, and making the host dereference out-of-bounds addresses while printing logs.

Snapshot the validated values once with READ_ONCE() and pass them down explicitly in a new struct ivpu_fw_log_desc instead of re-reading them from the shared struct.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • d4e4257afa6ed5205eda993180401fc2c20e4b60 to before 07d4190d75021c38b7994045179aa29131634d4fAffected
  • d4e4257afa6ed5205eda993180401fc2c20e4b60 to before 8ec3d6972f1440fae6c8dadd1859892775208759Affected
  • d4e4257afa6ed5205eda993180401fc2c20e4b60 to before 40868f80a89199630b03d4457876f9a1feba0660Affected
  • d4e4257afa6ed5205eda993180401fc2c20e4b60 to before b1555f63ee1a680f280bc18e8dac416f250e2ec3Affected
  • d4e4257afa6ed5205eda993180401fc2c20e4b60 to before 0724afc55c77c36c7feb9a7264b02aa7593c5c2dAffected
LinuxLinux
  • 6.6Affected
  • before 6.6Not affected
  • 6.6.160 through 6.6.*Not affected
  • 6.12.111 through 6.12.*Not affected
  • 6.18.53 through 6.18.*Not affected
  • 7.2.7 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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