CVE-2026-97446: Linux kernel · ACPICA: Fix NULL pointer dereference in acpi_ns_custom_package()
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 12:55 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 a NULL check in acpi_ns_custom_package() to prevent the NULL pointer dereference. Users should apply the official Linux kernel updates that include this patch for the affected versions.
Description
A NULL pointer dereference vulnerability in the Linux kernel's ACPICA component was resolved. The function acpi_ns_custom_package() dereferenced the first element of a package without checking for NULL, leading to a potential crash when firmware returns an unresolvable reference. The fix adds a NULL check to prevent this crash and returns an error code instead.
References
- ubuntu.com/security/CVE-2026-97446 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97446 (opens in a new tab)
- git.kernel.org/stable/c/f8d14b7bb0063bbbd86c0e4d73edb8cea7b362bc (opens in a new tab)
- git.kernel.org/stable/c/3762c6c8ae5073892d7cec736cc54270c7c9ce90 (opens in a new tab)
- git.kernel.org/stable/c/3cbf096a478f4fa03953f0685ad28c9c82ce67cb (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97446 (opens in a new tab)
- git.kernel.org/stable/c/08c5dee5da1d8d99b5a4e94db5a3d873c491771e (opens in a new tab)
- git.kernel.org/stable/c/644888605f55395e6012ed43e3ed643ef7ab5013 (opens in a new tab)
- git.kernel.org/stable/c/9936507ac0f2379787a2a805b11ab1cf0f241372 (opens in a new tab)
- git.kernel.org/stable/c/fad537538cdfcdc51e41db61bbf9ebe5ed9427eb (opens in a new tab)