CVE-2026-93254: Linux kernel · arm64: entry: Avoid unnecessary local_irq_disable() on kernel exit
Affects Linux kernelSource CVE Database V5
Not known to be exploited : upgrade to 49a61174186bed25d439ff37400c7ce5e3603e73 or 39aebe0e89469c2904e60b1e977e0d4dbf33326b when convenient.
Data as of 26 Oct 2026, 14:05 UTC
Rated Low by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 49a61174186bed25d439ff37400c7ce5e3603e73, 39aebe0e89469c2904e60b1e977e0d4dbf33326b
Exploitation evidence
Disclosed: evidence found.
CVE published 24 Sep 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 Linux kernel to 49a61174186bed25d439ff37400c7ce5e3603e73 or 39aebe0e89469c2904e60b1e977e0d4dbf33326b.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix has been implemented and committed to the Linux kernel source (commits 49a61174186bed25d439ff37400c7ce5e3603e73 and 39aebe0e89469c2904e60b1e977e0d4dbf33326b). Users should update to a kernel version including these commits or later to resolve the issue. No additional mitigation is required.
Description
CVE-2026-93254 addresses an inefficiency and potential warning condition in the Linux kernel's arm64 architecture code related to interrupt handling on kernel exit. The vulnerability involves unnecessary calls to local_irq_disable() during kernel mode exit, which can cause redundant operations and confuse priority masking state tracking, leading to warnings when debug priority masking is enabled. The fix splits the exit function into parts to avoid unnecessary work and maintain correct state tracking.