CVE-2026-74299: Linux kernel · RDMA/core: Fix FRMR aging push to queue error flow
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 9 Nov 2026, 14:03 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 15 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 9 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 24.04 LTSlinux-aws-6.14pkg:deb/ubuntu/linux-aws-6.14?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-aws-6.17pkg:deb/ubuntu/linux-aws-6.17?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-6.14pkg:deb/ubuntu/linux-azure-6.14?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-6.17pkg:deb/ubuntu/linux-azure-6.17?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-fde-6.14pkg:deb/ubuntu/linux-azure-fde-6.14?arch=source&distro=nobleOther 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 fix is available that replaces the error-prone queue move logic with a helper function that cannot fail under memory pressure, thereby preventing mkey leaks. Users should apply the updated Linux kernel versions that include this patch to remediate the issue.
Description
A vulnerability in the Linux kernel RDMA core related to FRMR aging push to queue error flow has been fixed. The issue involved improper handling of failures when moving handles from the active queue to a non-empty inactive queue during aging pools with pinned handles, which could lead to leaking memory keys (mkeys). The fix introduces a helper function that safely moves pages between queues without allocation failures, simplifying error handling and preventing leaks.
References
- ubuntu.com/security/CVE-2026-74299 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-74299 (opens in a new tab)
- git.kernel.org/linus/c6936506ed556ce3ccad36ab999baf2764dd7d25 (opens in a new tab)
- git.kernel.org/stable/c/c6936506ed556ce3ccad36ab999baf2764dd7d25 (opens in a new tab)
- git.kernel.org/stable/c/edf133d28fc43f7f8b0da43a8d5b93fdf8073d35 (opens in a new tab)