CVE-2026-72015: Linux kernel · fs/resctrl: Fix double-add of pseudo-locked region's RMID to free list
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, 14:05 UTC
Rated by Threat Radar · 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 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 to fix this vulnerability. Users should apply the official kernel updates that address this issue. The vendor advisory confirms the availability of fixes for affected versions. No additional mitigation steps are indicated beyond applying the patch.
Description
A double-free vulnerability in the Linux kernel's resource control (resctrl) subsystem was fixed. The issue occurs because a pseudo-locked group's RMID is freed twice: once when created and again unconditionally on unmount, leading to a double addition to the free list. This flaw can cause memory corruption within the kernel. The vulnerability affects specific versions of the linux-hwe-edge kernel. A patch is available to correct this behavior.
References
- nvd.nist.gov/vuln/detail/CVE-2026-72015 (opens in a new tab)
- git.kernel.org/stable/c/52007bfdce5310e8c8a29849bfbfb188a1e50ca0 (opens in a new tab)
- git.kernel.org/stable/c/9168176894332312c12ef052e784735dbf4ffe3f (opens in a new tab)
- git.kernel.org/stable/c/b2fe9e140aa94b2816aab7ebc692b543e418f5e3 (opens in a new tab)
- git.kernel.org/stable/c/b9f089723aee892efc77c349ae47a6b452b293c4 (opens in a new tab)
- git.kernel.org/stable/c/f7628eea9212e185a09df3aea603ca8580b8678d (opens in a new tab)
- ubuntu.com/security/CVE-2026-72015 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-72015 (opens in a new tab)
- git.kernel.org/linus/b9f089723aee892efc77c349ae47a6b452b293c4 (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)