CVE-2026-74683: Linux kernel · Input: evdev – sanitize event type index when fetching event masks
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f27fa9b39f925d26e034a1f382cb45523138f4ae : update Linux kernel when convenient.
Data as of 6 Nov 2026, 17:48 UTC
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
Disclosed: evidence found.
CVE published 22 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 6 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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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
- git.kernel.org/stable/c/c79b08d8fa230871a3634e34a66e591ac2d084ef (opens in a new tab)
- git.kernel.org/stable/c/f27fa9b39f925d26e034a1f382cb45523138f4ae (opens in a new tab)
- git.kernel.org/stable/c/f3fc329acad9a71b3c077237cbac20670d2358c8 (opens in a new tab)
- git.kernel.org/stable/c/5db341189bb7ff041d570dbe36ecca7e32913927 (opens in a new tab)
- git.kernel.org/stable/c/433913b4a92214d76e9f0c03ad9128fec943d5f8 (opens in a new tab)
- git.kernel.org/stable/c/4034ef247a9dde3f56660b01f0c3280dac6b1274 (opens in a new tab)
- git.kernel.org/stable/c/810e1883d4815f29c30d900ad7333d03cc2515d1 (opens in a new tab)
- git.kernel.org/stable/c/3abd29c61d2ef37c4102cf755b18be53bb9dbea6 (opens in a new tab)