CVE-2026-72453: Linux kernel · regcache: Do not overwrite error code when finalizing cache after error
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in bae057687f61580dd897411cd749da22a7740647 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:16 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in bae057687f61580dd897411cd749da22a7740647, 9108f7fa493b4c88cbc09503e0c164244456bad5, 9f171aa115ec76be02c76c5765cd2c865279e34a
Exploitation evidence
Disclosed: evidence found.
CVE published 15 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 Linux kernel to bae057687f61580dd897411cd749da22a7740647, 9108f7fa493b4c88cbc09503e0c164244456bad5 or 9f171aa115ec76be02c76c5765cd2c865279e34a.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
AI-suggested
The vulnerability has been fixed in the Linux kernel in the commits identified by hashes bae057687f61580dd897411cd749da22a7740647, 9108f7fa493b4c88cbc09503e0c164244456bad5, and 9f171aa115ec76be02c76c5765cd2c865279e34a. Users and administrators should update to a Linux kernel version including these fixes to remediate the issue.
Description
A vulnerability in the Linux kernel's regcache subsystem could cause error codes to be overwritten during cache initialization, potentially leading to NULL pointer dereferences when the cache is accessed later. This occurs when an error in the populate callback is masked by the exit callback's return value. The issue has been fixed in specific commits.