CVE-2026-72212: Linux kernel · mm/memory_hotplug: fix incorrect altmap passing in 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, 12:55 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 that fixes the incorrect altmap passing in the error path. Users should apply the official Linux kernel updates that address this issue. The vendor advisory confirms the availability of fixes. No additional mitigation steps are indicated beyond applying the patch.
Description
A vulnerability in the Linux kernel's memory hotplug subsystem was fixed, addressing incorrect handling of altmap pointers in an error path. The flaw could lead to memory corruption by injecting unowned pages into the system's buddy allocator, potentially causing machine checks or memory corruption when those pages are later allocated and used.
References
- nvd.nist.gov/vuln/detail/CVE-2026-72212 (opens in a new tab)
- git.kernel.org/stable/c/2f9e3ec17c3d2093c664c00a027588a446c39894 (opens in a new tab)
- git.kernel.org/stable/c/2fac4afa0e2e68841334c78c1821e49f74fbc66a (opens in a new tab)
- git.kernel.org/stable/c/3833e6abdbbfb59ec8203a84a84206cb7ffb41ac (opens in a new tab)
- git.kernel.org/stable/c/722e6c54bde6391fb95f0357f555aca887c7b18c (opens in a new tab)
- ubuntu.com/security/CVE-2026-72212 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-72212 (opens in a new tab)
- git.kernel.org/linus/2fac4afa0e2e68841334c78c1821e49f74fbc66a (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)