CVE-2026-97537: Linux kernel · scsi: qla2xxx: Fix queue teardown NULL dma_free and bitmap locking
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 13:47 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 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 implemented in the Linux kernel to address this issue. Users should update to a patched kernel version that includes these corrections. Since this is a kernel-level vulnerability, applying the official kernel update from the vendor or distribution is the recommended remediation.
Description
A vulnerability in the Linux kernel's qla2xxx SCSI driver has been resolved. The flaw involves improper handling of dma_free_coherent() calls with NULL pointers and inconsistent locking mechanisms during queue teardown in error paths. This can lead to undefined behavior, including kernel panic, and potential race conditions corrupting queue ID mappings. The fix includes adding NULL checks before dma_free_coherent(), using consistent locking with mq_lock, and removing redundant bitmap clearing in error paths.
References
- ubuntu.com/security/CVE-2026-97537 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97537 (opens in a new tab)
- git.kernel.org/stable/c/f35cb67f2092b49d7949065dd56895ed47238f22 (opens in a new tab)
- git.kernel.org/stable/c/34a40e0dff940ac5eba494a69b553ea571e24873 (opens in a new tab)
- git.kernel.org/stable/c/94fc0c5b45de2bf3a691619bcfd10b9a49fc647e (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97537 (opens in a new tab)
- git.kernel.org/stable/c/56e25d716833604fd5bff388e472f290bfe793aa (opens in a new tab)