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

accel/ivpu: Reject firmware log with size smaller than header

fw_log_from_bo() validates the tracing buffer header_size and that the
log fits within the BO, but never checks that log->size is at least
log->header_size. fw_log_print_buffer() then computes:

u32 data_size = log->size - log->header_size;

which underflows to a near-U32_MAX value when firmware reports a log whose
size is smaller than its header. That huge data_size defeats the
log_start/log_end bounds clamps added by commit dd1311bcf0e6 ("accel/ivpu:
Add bounds checks for firmware log indices"), so fw_log_print_lines() reads
far past the small real data region of the BO. A size of 0 also makes
fw_log_from_bo() advance the offset by 0, causing the callers to loop
forever on the same header.

Reject logs whose size is smaller than the header (which also rejects
size == 0).

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

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Fixes

Solution

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Workaround

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References
Link Providers
https://git.kernel.org/stable/c/257321a1c036da417f5d9c47b95c7e58f62bf263 cve-icon cve-icon
https://git.kernel.org/stable/c/5592a207e158b738d9c1d27f208dbbea13ae7606 cve-icon cve-icon
https://git.kernel.org/stable/c/6920e62be4c969a68ce4ebc59da68c6cbc9512e5 cve-icon cve-icon
https://git.kernel.org/stable/c/dc9a1cda2e46d0254730a6f93cfe48532895f33c cve-icon cve-icon
https://git.kernel.org/stable/c/ddb44baed257560f192b145ed36cf8c0a412de47 cve-icon cve-icon
History

Sat, 15 Aug 2026 08:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119
CWE-192

Sat, 15 Aug 2026 06:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Reject firmware log with size smaller than header fw_log_from_bo() validates the tracing buffer header_size and that the log fits within the BO, but never checks that log->size is at least log->header_size. fw_log_print_buffer() then computes: u32 data_size = log->size - log->header_size; which underflows to a near-U32_MAX value when firmware reports a log whose size is smaller than its header. That huge data_size defeats the log_start/log_end bounds clamps added by commit dd1311bcf0e6 ("accel/ivpu: Add bounds checks for firmware log indices"), so fw_log_print_lines() reads far past the small real data region of the BO. A size of 0 also makes fw_log_from_bo() advance the offset by 0, causing the callers to loop forever on the same header. Reject logs whose size is smaller than the header (which also rejects size == 0).
Title accel/ivpu: Reject firmware log with size smaller than header
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-15T05:52:36.800Z

Reserved: 2026-08-09T03:40:39.905Z

Link: CVE-2026-72089

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-15T06:21:22.980

Modified: 2026-08-15T06:21:22.980

Link: CVE-2026-72089

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-15T08:30:06Z

Weaknesses