CVE-2026-72413: Linux kernel · sctp: fix err_chunk memory leaks in INIT handling
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 that fixes the memory leak by properly freeing err_chunk in all affected code paths. Users should apply the official Linux kernel updates that include this fix. No additional mitigation is indicated or required.
Description
A memory leak vulnerability in the Linux kernel SCTP implementation was fixed. The issue involved err_chunk memory leaks in the INIT handling code paths when unrecognized parameters were encountered and certain functions failed or returned early without freeing allocated memory. This flaw was addressed by adding proper freeing of err_chunk in all affected code paths.
References
- nvd.nist.gov/vuln/detail/CVE-2026-72413 (opens in a new tab)
- git.kernel.org/stable/c/94f55994e19e8f0676990b9d5015b58ab6a97e00 (opens in a new tab)
- git.kernel.org/stable/c/9f58a0a4d6c2ed5d341bba64f058f15d1b0c36f2 (opens in a new tab)
- ubuntu.com/security/CVE-2026-72413 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-72413 (opens in a new tab)
- git.kernel.org/linus/9f58a0a4d6c2ed5d341bba64f058f15d1b0c36f2 (opens in a new tab)
- git.kernel.org/stable/c/1cae40d423a2042c7970f29c00028951ec20db8a (opens in a new tab)
- git.kernel.org/stable/c/43ddbcdc0ed74a8fba4aff5e623ace8135411b93 (opens in a new tab)
- git.kernel.org/stable/c/6acedac7a14af71cfe25024ead28e16a070899e4 (opens in a new tab)
- git.kernel.org/stable/c/a8e6a839c0e7ca1da752faaab51e2eafb17483a4 (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)