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VulnerabilityPublished Updated

CVE-2026-98367: Linux kernel · RDMA/siw: Clear association under lock if siw_qp_modify fails in siw_accept

Affects Linux kernelSource CVE Database V5

0

Not known to be exploited · CVSS 7.8 High · fixed in f11e09fe2fc3a11ccdf8f932b68181b0bb1d2078 : patch Linux kernel soon.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
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.
Patch
Available – fixed in f11e09fe2fc3a11ccdf8f932b68181b0bb1d2078, e3f039082856adab7e195dea1af45d93dd6a3f1c, df2584750314336edcbcc21fb388e04b260f35b7 +5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 6c52fdc244b5ccc468006fd65a504d4ee33743c7, < f11e09fe2fc3a11ccdf8f932b68181b0bb1d2078
Fixed in
  • f11e09fe2fc3a11ccdf8f932b68181b0bb1d2078
LinuxLinuxAffected
  • ≥ 6c52fdc244b5ccc468006fd65a504d4ee33743c7, < e3f039082856adab7e195dea1af45d93dd6a3f1c
Fixed in
  • e3f039082856adab7e195dea1af45d93dd6a3f1c
LinuxLinuxAffected
  • ≥ 6c52fdc244b5ccc468006fd65a504d4ee33743c7, < df2584750314336edcbcc21fb388e04b260f35b7
Fixed in
  • df2584750314336edcbcc21fb388e04b260f35b7
LinuxLinuxAffected
  • ≥ 6c52fdc244b5ccc468006fd65a504d4ee33743c7, < bfdc744bf20ae4c3ef2e470298de5237c5c9a13c
Fixed in
  • bfdc744bf20ae4c3ef2e470298de5237c5c9a13c
LinuxLinuxAffected
  • ≥ 6c52fdc244b5ccc468006fd65a504d4ee33743c7, < ad50d19f3d1ce052b3a146143581e930a1efb33e
Fixed in
  • ad50d19f3d1ce052b3a146143581e930a1efb33e
LinuxLinuxAffected
  • ≥ 6c52fdc244b5ccc468006fd65a504d4ee33743c7, < 030306bbb9273af80f14d7af20129661964cd9a7
Fixed in
  • 030306bbb9273af80f14d7af20129661964cd9a7

AI-suggested

A fix is available and has been applied in the Linux kernel. Users should update to a fixed kernel version that includes the patches identified by the commit hashes provided. No additional mitigation is required once the system is updated.

Description

CVE-2026-98367 is a high-severity vulnerability in the Linux kernel's RDMA/siw subsystem affecting version 5.3. It involves improper handling of the association reference under a lock when siw_qp_modify fails during siw_accept, leading to a potential use-after-free condition. This occurs because the QP's state_lock is released prematurely before error cleanup, allowing a race condition that can free memory still in use.

References

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