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VulnerabilityPublished Updated

CVE-2026-74683: Linux kernel · Input: evdev – sanitize event type index when fetching event masks

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f27fa9b39f925d26e034a1f382cb45523138f4ae : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:48 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch
Available – fixed in f27fa9b39f925d26e034a1f382cb45523138f4ae, f3fc329acad9a71b3c077237cbac20670d2358c8, c79b08d8fa230871a3634e34a66e591ac2d084ef +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 06a16293f71927f756dcf37558a79c0b05a91641, < f27fa9b39f925d26e034a1f382cb45523138f4ae
Fixed in
  • f27fa9b39f925d26e034a1f382cb45523138f4ae
LinuxLinuxAffected
  • ≥ 06a16293f71927f756dcf37558a79c0b05a91641, < f3fc329acad9a71b3c077237cbac20670d2358c8
Fixed in
  • f3fc329acad9a71b3c077237cbac20670d2358c8
LinuxLinuxAffected
  • ≥ 06a16293f71927f756dcf37558a79c0b05a91641, < c79b08d8fa230871a3634e34a66e591ac2d084ef
Fixed in
  • c79b08d8fa230871a3634e34a66e591ac2d084ef
LinuxLinuxAffected
  • ≥ 06a16293f71927f756dcf37558a79c0b05a91641, < 433913b4a92214d76e9f0c03ad9128fec943d5f8
Fixed in
  • 433913b4a92214d76e9f0c03ad9128fec943d5f8
LinuxLinuxAffected
  • ≥ 06a16293f71927f756dcf37558a79c0b05a91641, < 4034ef247a9dde3f56660b01f0c3280dac6b1274
Fixed in
  • 4034ef247a9dde3f56660b01f0c3280dac6b1274
LinuxLinuxAffected
  • ≥ 06a16293f71927f756dcf37558a79c0b05a91641, < 810e1883d4815f29c30d900ad7333d03cc2515d1
Fixed in
  • 810e1883d4815f29c30d900ad7333d03cc2515d1

AI-suggested

A fix is available and has been applied in multiple Linux kernel commits identified by their hashes. Users and administrators should update to a Linux kernel version that includes these fixes to mitigate the vulnerability. No additional mitigation steps are indicated.

Description

CVE-2026-74683 is a vulnerability in the Linux kernel's evdev input subsystem where the event type index used in certain ioctls is not properly sanitized. This could lead to speculative out-of-bounds memory access due to mispredicted bounds checks. The issue is mitigated by sanitizing the index to clamp out-of-bounds values to zero, preventing speculative memory access.

References

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