CVE-2026-99212: Linux kernel · net/rds: don't let the rdma_cm destroy an id RDS still owns on route failure
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 30 Oct 2026, 03:50 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 28 Oct 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 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10linuxpkg:deb/ubuntu/linux?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10linux-oraclepkg:deb/ubuntu/linux-oracle?arch=source&distro=stonkingOther 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 for this vulnerability is available and has been applied in the Linux kernel. Users should update to a patched kernel version that includes the fix to prevent the premature destruction of RDS connection identifiers on route failure. No additional mitigation actions are indicated.
Description
CVE-2026-99212 is a vulnerability in the Linux kernel's RDS (Reliable Datagram Sockets) subsystem related to RDMA connection management. The flaw occurs when a route failure causes the RDMA connection manager to destroy an identifier (id) that RDS still owns, leading to a use-after-free condition. This happens because the pointer to the id is not cleared, leaving the connection in a connecting state with a freed id until shutdown. The fix ensures the id remains owned by RDS until proper shutdown, preventing premature destruction.
References
- ubuntu.com/security/CVE-2026-99212 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-99212 (opens in a new tab)
- git.kernel.org/stable/c/a7c7d0ff876377fea7ae876a28d6df8d9349df57 (opens in a new tab)
- git.kernel.org/stable/c/98d446b7c013254a8a7b49720557676a3a851fde (opens in a new tab)
- git.kernel.org/stable/c/91ece3efa064f0b3b3c67b9b045d9eeb4a034e43 (opens in a new tab)