CVE-2026-74683: Linux kernel · Input: evdev – sanitize event type index when fetching event masks
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 5.15.0-1117.124~20.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:16 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.15.0-1117.124~20.04.1, 5.15.0-1123.132~20.04.1, 5.15.0-1122.131~20.04.1 +26
Exploitation evidence
Disclosed: evidence found.
CVE published 22 Aug 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.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and should be applied to affected linux-aws kernel versions. The vendor advisory confirms that this issue has been resolved in updated kernel releases. Users should update to the fixed kernel versions to mitigate this vulnerability.
Description
A vulnerability in the Linux kernel's evdev input subsystem allowed a user-supplied event type index to bypass bounds checks during speculative execution, potentially leading to out-of-bounds memory access. The issue was addressed by sanitizing the event type index to prevent speculative out-of-bounds loads. This vulnerability affects specific linux-aws kernel versions and has been patched. No known exploits are reported in the wild.
References
- nvd.nist.gov/vuln/detail/CVE-2026-74683 (opens in a new tab)
- git.kernel.org/stable/c/3abd29c61d2ef37c4102cf755b18be53bb9dbea6 (opens in a new tab)
- git.kernel.org/stable/c/4034ef247a9dde3f56660b01f0c3280dac6b1274 (opens in a new tab)
- git.kernel.org/stable/c/433913b4a92214d76e9f0c03ad9128fec943d5f8 (opens in a new tab)
- git.kernel.org/stable/c/5db341189bb7ff041d570dbe36ecca7e32913927 (opens in a new tab)
- git.kernel.org/stable/c/810e1883d4815f29c30d900ad7333d03cc2515d1 (opens in a new tab)
- 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)
- ubuntu.com/security/CVE-2026-74683 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-74683 (opens in a new tab)
- ubuntu.com/security/notices/USN-8878-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8879-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8877-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8875-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8875-2 (opens in a new tab)