CVE-2026-98967: Linux kernel · cxgb4/ch_ktls: disable softirqs around tid_list erases
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 02:12 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
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
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 is available that replaces xa_erase() calls with xa_erase_bh() to disable softirqs during tid_list erases, matching the insertion locking behavior. Users should apply the updated Linux kernel versions that include this fix to prevent potential deadlocks.
Description
A concurrency issue in the Linux kernel's cxgb4/ch_ktls component was resolved by disabling softirqs around tid_list erases. The vulnerability involved improper locking when erasing entries from a shared XArray, which could cause a spinlock deadlock due to softirq interruptions. The fix uses xa_erase_bh() to match the insertion path and prevent this condition.
References
- ubuntu.com/security/CVE-2026-98967 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98967 (opens in a new tab)
- git.kernel.org/stable/c/4c9dc0faca98084922caeb689579d338cf3e1c29 (opens in a new tab)
- git.kernel.org/stable/c/7110c7f70c59eb7924e79853bcc00e2a026662e6 (opens in a new tab)
- 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/bea736a2b8c6da5b1078badf1206541b5404250f (opens in a new tab)