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CVE-2026-68107

drm/amdgpu/vcn4: avoid rereading IB param length

HIGH
8.8
CVSS Score
Published: August 10, 2026 at 11:58 AM UTC
Updated: October 30, 2026 at 01:19 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn4: avoid rereading IB param length Reuse the parameter length returned by vcn_v4_0_enc_find_ib_param() instead of rereading it from the IB. This avoids a potential TOCTOU issue if the IB contents change between reads. (cherry picked from commit dbb02b4755f8c1f3773263f2d779872c1c0c073a)

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
2b10cb58d7a3fd621ec9b2ba765a092e562ef9986.12.486.16.86.176.6.1076dc4eddeb7e6cca7e1ab32cafbda79d06e652d84b1dc92f55b22a80ded8f0263c9ef4ba902303895cfdde9197ecd957281507be99af172671a57755c
Vendor states this is fixed in 3b4082fabc67c9780b06eb959e59dd92fa79c0f0 (fixed)
Vendor states this is fixed in bbbe6a2a8d8dc87243438d3ffea2083b52d882d9 (fixed)
Vendor states this is fixed in bd868c077f67589ed2a714307ceaade5f246e302 (fixed)
Vendor states this is fixed in c309626bf91fa0a0b583575654e6e14e81f818a3 (fixed)
Vendor states this is fixed in ff6aa542d91d76a185f69bd1997b94a560ff5f6b (fixed)
Vendor states this is fixed in 6.12.101 (unaffected)
Vendor states this is fixed in 6.17 (unaffected)
Vendor states this is fixed in 6.18.42 (unaffected)
Vendor states this is fixed in 6.6.148 (unaffected)
Vendor states this is fixed in 7.1.6 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

Source: cverecord
https://git.kernel.org/stable/c/bbbe6a2a8d8dc87243438d3ffea2083b52d882d9
Source: cverecord
https://git.kernel.org/stable/c/ff6aa542d91d76a185f69bd1997b94a560ff5f6b
Source: cverecord
https://git.kernel.org/stable/c/bd868c077f67589ed2a714307ceaade5f246e302
Source: cverecord
https://git.kernel.org/stable/c/c309626bf91fa0a0b583575654e6e14e81f818a3
Source: cverecord
https://git.kernel.org/stable/c/3b4082fabc67c9780b06eb959e59dd92fa79c0f0

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED
CWE
CWE-367

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