CVE-2026-98967: Linux kernel · cxgb4/ch_ktls: disable softirqs around tid_list erases
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in bea736a2b8c6da5b1078badf1206541b5404250f : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:30 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in bea736a2b8c6da5b1078badf1206541b5404250f, bcf97573d44e277b1744d7f1226f665aa0ccc599, 8739f06e3f82cd715f7dd10ab24029ed881efc90 +4
Exploitation evidence
Disclosed: evidence found.
CVE published 23 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
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available in Linux kernel versions 5.11, 5.13, and specific commits identified by their hashes. Users should upgrade to these fixed versions to resolve the issue. No other mitigation is indicated or required.
Description
A concurrency issue in the Linux kernel's cxgb4/ch_ktls component was fixed by disabling softirqs around tid_list erases. The flaw involved improper locking when erasing entries from a shared XArray, which could lead to deadlocks due to softirq interruptions during cleanup. The issue affects specific Linux kernel versions prior to 5.11, between 5.12.9 and 5.13, and version 5.13 itself.
References
- git.kernel.org/stable/c/8739f06e3f82cd715f7dd10ab24029ed881efc90 (opens in a new tab)
- git.kernel.org/stable/c/bcf97573d44e277b1744d7f1226f665aa0ccc599 (opens in a new tab)
- git.kernel.org/stable/c/7110c7f70c59eb7924e79853bcc00e2a026662e6 (opens in a new tab)
- git.kernel.org/stable/c/bea736a2b8c6da5b1078badf1206541b5404250f (opens in a new tab)
- git.kernel.org/stable/c/4c9dc0faca98084922caeb689579d338cf3e1c29 (opens in a new tab)