VulnerabilityPublished 25 Sep 2026Updated 21 Oct 2026

CVE-2026-97916: Linux kernel · accel/ivpu: Validate firmware log buffer metadata

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in b1555f63ee1a680f280bc18e8dac416f250e2ec3 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in b1555f63ee1a680f280bc18e8dac416f250e2ec3, 40868f80a89199630b03d4457876f9a1feba0660, 0724afc55c77c36c7feb9a7264b02aa7593c5c2d +2

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d4e4257afa6ed5205eda993180401fc2c20e4b60, < b1555f63ee1a680f280bc18e8dac416f250e2ec3	Fixed in b1555f63ee1a680f280bc18e8dac416f250e2ec3
LinuxLinux	Affected ≥ d4e4257afa6ed5205eda993180401fc2c20e4b60, < 40868f80a89199630b03d4457876f9a1feba0660	Fixed in 40868f80a89199630b03d4457876f9a1feba0660
LinuxLinux	Affected ≥ d4e4257afa6ed5205eda993180401fc2c20e4b60, < 0724afc55c77c36c7feb9a7264b02aa7593c5c2d	Fixed in 0724afc55c77c36c7feb9a7264b02aa7593c5c2d
LinuxLinux	Affected ≥ d4e4257afa6ed5205eda993180401fc2c20e4b60, < 8ec3d6972f1440fae6c8dadd1859892775208759	Fixed in 8ec3d6972f1440fae6c8dadd1859892775208759
LinuxLinux	Affected ≥ d4e4257afa6ed5205eda993180401fc2c20e4b60, < 07d4190d75021c38b7994045179aa29131634d4f	Fixed in 07d4190d75021c38b7994045179aa29131634d4f
LinuxLinux	Affected =6.6	Fixed in–

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.

References

Community reviews

Loading reviews…