Vulnerability in Linux

[ Description ]Official description

In the Linux kernel, the following vulnerability has been resolved: drm/i915/dmc: Harden DMC firmware payload parsing Validate the conversion of the DMC firmware size from dwords to bytes using check_mul_overflow() before calculating the firmware payload size. Reject zero-length payloads and zero MMIO counts in the DMC firmware header so malformed firmware is caught early. Also set dmc_fw_size only after the payload allocation succeeds. (cherry picked from commit efde6601a1f1daedfe3dcc2816c934ddb44e3eef)

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund28 Oct 2026WID-SEC-2026-4224

  Linux Kernel: Multiple vulnerabilities allow an unspecified attack Translated from German

  CVE-2026-99116CVE-2026-99143CVE-2026-99170+113 more CVEs

[ References ]References

• git.kernel.org/stable/c/05f7a2f712f8b287a98ee61a7c2c6b72dad2fc6d
• git.kernel.org/stable/c/0e396088fa5c1f96ff43de29c2a2f8807078723d
• git.kernel.org/stable/c/4589ad76a6b1011538600ad398baf0b7d73a1252
• git.kernel.org/stable/c/53068cf3851dd4e00e8e668563e0353d9d79a98b
• git.kernel.org/stable/c/8bb1858db453cd4250e3b633f5d2d09206024ca6
• git.kernel.org/stable/c/dfcfe2874e7c16e8460dc86ac1eeb54ea0e7f8aa
• git.kernel.org/stable/c/e33921271d4438f4a24014f560e5ab297d7eda3f
• git.kernel.org/stable/c/eb7a0ba650d607976d1a0a5e7501d3f14b35d026