CVE-2026-74372: Linux kernel · raid1: fix nr_pending leak in REQ_ATOMIC bad-block error path
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 7.0.0-1014.14~24.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 13:47 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 7.0.0-1014.14~24.04.1, 7.0.0-1017.17~24.04.1, 7.0.0-1016.16~24.04.1 +11
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 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 kernel versions to fix the nr_pending reference count leak in the raid1 REQ_ATOMIC bad-block error path. Users should update to patched kernel versions as listed in the affectedVersions field. No additional mitigation is indicated by the vendor advisory.
Description
A vulnerability in the Linux kernel's raid1 subsystem caused a reference count leak (nr_pending) in the REQ_ATOMIC bad-block error path. This leak prevents the removal of certain RAID devices, potentially leading to resource management issues. The issue has been fixed by ensuring the reference count is properly decremented before error handling. Multiple specific Linux kernel versions are affected. A patch is available to resolve this issue.
References
- nvd.nist.gov/vuln/detail/CVE-2026-74372 (opens in a new tab)
- git.kernel.org/stable/c/5ac9e793ba2583d72740d929e7858a6c82e22ed5 (opens in a new tab)
- git.kernel.org/stable/c/731485617bf862f1289c3f40ed1f800d0475826f (opens in a new tab)
- git.kernel.org/stable/c/909d9dc3b5730c8ed7b764c68bc788342df2a07b (opens in a new tab)
- ubuntu.com/security/CVE-2026-74372 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-74372 (opens in a new tab)
- git.kernel.org/linus/909d9dc3b5730c8ed7b764c68bc788342df2a07b (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8889-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-3 (opens in a new tab)