VulnerabilityPublished 28 Oct 2026

CVE-2026-99118: Linux kernel · drm/i915/dmc: Harden DMC firmware payload parsing

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in dfcfe2874e7c16e8460dc86ac1eeb54ea0e7f8aa : update Linux kernel when convenient.

Data as of 28 Oct 2026, 10:58 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

Patch: Available – fixed in dfcfe2874e7c16e8460dc86ac1eeb54ea0e7f8aa, 8bb1858db453cd4250e3b633f5d2d09206024ca6, 05f7a2f712f8b287a98ee61a7c2c6b72dad2fc6d

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to dfcfe2874e7c16e8460dc86ac1eeb54ea0e7f8aa, 8bb1858db453cd4250e3b633f5d2d09206024ca6 or 05f7a2f712f8b287a98ee61a7c2c6b72dad2fc6d.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ eb805623d8b161342ed9c9caf366f0a295041a6d, < dfcfe2874e7c16e8460dc86ac1eeb54ea0e7f8aa	Fixed in dfcfe2874e7c16e8460dc86ac1eeb54ea0e7f8aa
LinuxLinux	Affected ≥ eb805623d8b161342ed9c9caf366f0a295041a6d, < 8bb1858db453cd4250e3b633f5d2d09206024ca6	Fixed in 8bb1858db453cd4250e3b633f5d2d09206024ca6
LinuxLinux	Affected ≥ eb805623d8b161342ed9c9caf366f0a295041a6d, < 05f7a2f712f8b287a98ee61a7c2c6b72dad2fc6d	Fixed in 05f7a2f712f8b287a98ee61a7c2c6b72dad2fc6d
LinuxLinux	Affected =4.2	Fixed in–

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)

References

Community reviews

Loading reviews…