CVE-2026-97441: Linux kernel · ata: ahci: fail probe if BAR too small for claimed ports
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 17:16 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 24 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 is available that adds validation to the AHCI driver to prevent probing when the BAR size is insufficient for the claimed number of ports. Systems should apply the updated Linux kernel version containing this fix. No additional mitigation is required beyond applying the patch.
Description
A vulnerability in the Linux kernel AHCI driver could cause a kernel panic when the AHCI controller is disabled in BIOS but reports an incorrect number of ports. This occurs because the driver attempts to access port registers beyond the allocated memory region. The issue is resolved by adding a validation check that fails the probe if the memory region is too small for the claimed ports, preventing the panic and providing a clear error message.
References
- ubuntu.com/security/CVE-2026-97441 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97441 (opens in a new tab)
- git.kernel.org/stable/c/c4086c6e1af757e1ff26fa2d2926b3ec0195de79 (opens in a new tab)
- git.kernel.org/stable/c/f2e291043c37a896d7f9797e25a356dceb030177 (opens in a new tab)
- git.kernel.org/stable/c/df262c828b616450eb351349e91c63447551bd01 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97441 (opens in a new tab)
- git.kernel.org/stable/c/533a08ea11217100cec7a0ed903cb9b9c892d6f1 (opens in a new tab)
- git.kernel.org/stable/c/6d29b91164424256a759ddabc8f2de1ae09bd3f1 (opens in a new tab)
- git.kernel.org/stable/c/c717b20100ef8cd06b5237af70ea2cb692e058ce (opens in a new tab)
- git.kernel.org/stable/c/ff0ab535f8febbd32afa5832f8d2d9b06a8d5060 (opens in a new tab)