What’s Vulnerable › Vulnerabilities

CVE-2026-68107: drm/amdgpu/vcn4: avoid rereading IB param length

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-10 · updated 2026-10-30
• Weakness: CWE-367

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 products

• Linux: from 6.6.107 before 6.6.148; from 6.12.48 before 6.12.101; from 6.1.191 before 6.2; from 6.16.8 before 6.17 — fixed in 6.6.148, 6.12.101, 6.2, 6.17

How to fix

Upgrade to a fixed version: Linux 6.6.148, 6.12.101, 6.2, 6.17. Check the vendor advisory for mitigations.

References

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

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