accel/ivpu: Reject firmware log with size smaller than header
Published Aug 15, 2026
7.1
HIGHCVSS 3.1
EPSS 0.17%
Description
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).
Affected products
-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
-
- Version 6.6StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<6.6
- Version 6.12.97StatusunaffectedConstraints<=6.12.*
- Version 6.18.40StatusunaffectedConstraints<=6.18.*
- Version 6.6.148StatusunaffectedConstraints<=6.6.*
- Version 7.1.5StatusunaffectedConstraints<=7.1.*
- Version 7.2StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
| ||||||||||||||||||||||||
| Linux | Linux | affected |
|
No data.
No data.
Red Hat Enterprise Linux 10
kernel
Fix deferred
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
Aug–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.17% (0.00166) | 5.26th | v5 (v2026.06.15) |
| Aug 15, 2026 | 0.21% (0.00209) | 11.33th | v5 (v2026.06.15) |
References (10)
- https://access.redhat.com/security/cve/CVE-2026-72089 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2516317 Issue Tracking
- https://git.kernel.org/stable/c/257321a1c036da417f5d9c47b95c7e58f62bf263
- https://git.kernel.org/stable/c/5592a207e158b738d9c1d27f208dbbea13ae7606
- https://git.kernel.org/stable/c/6920e62be4c969a68ce4ebc59da68c6cbc9512e5
- https://git.kernel.org/stable/c/dc9a1cda2e46d0254730a6f93cfe48532895f33c
- https://git.kernel.org/stable/c/ddb44baed257560f192b145ed36cf8c0a412de47
- https://lore.kernel.org/linux-cve-announce/2026081522-CVE-2026-72089-882c@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-72089
- https://www.cve.org/CVERecord?id=CVE-2026-72089
Change history (0)
No recorded changes yet.