CVE-2026-98367: Linux kernel · RDMA/siw: Clear association under lock if siw_qp_modify fails in siw_accept
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 7.8 High.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 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
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 fix has been applied to the Linux kernel to clear the cep association under the write lock if siw_qp_modify fails in siw_accept, preventing the race condition. Users should update to a patched kernel version containing this fix. No additional mitigation is required beyond applying the official kernel update.
Description
A use-after-free vulnerability in the Linux kernel's RDMA/siw subsystem was resolved by ensuring proper locking and clearing of association references when siw_qp_modify fails during siw_accept. Without this fix, a race condition could occur leading to a use-after-free of the connection endpoint (cep) object.
References
- ubuntu.com/security/CVE-2026-98367 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98367 (opens in a new tab)
- git.kernel.org/linus/32cd87f54dd1070020e664ccb0312a9f0fea79b4 (opens in a new tab)
- git.kernel.org/stable/c/030306bbb9273af80f14d7af20129661964cd9a7 (opens in a new tab)
- git.kernel.org/stable/c/32cd87f54dd1070020e664ccb0312a9f0fea79b4 (opens in a new tab)
- git.kernel.org/stable/c/9dcc0f4e488b70cff81e0e5717a498c929cf5de3 (opens in a new tab)
- git.kernel.org/stable/c/ad50d19f3d1ce052b3a146143581e930a1efb33e (opens in a new tab)
- git.kernel.org/stable/c/bfdc744bf20ae4c3ef2e470298de5237c5c9a13c (opens in a new tab)
- git.kernel.org/stable/c/df2584750314336edcbcc21fb388e04b260f35b7 (opens in a new tab)
- git.kernel.org/stable/c/e3f039082856adab7e195dea1af45d93dd6a3f1c (opens in a new tab)
- git.kernel.org/stable/c/f11e09fe2fc3a11ccdf8f932b68181b0bb1d2078 (opens in a new tab)