CVE-2026-97453: Linux kernel · ACPICA: validate byte_count in acpi_ps_get_next_package_length()
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
- 0.1% 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 has been applied to the affected Linux kernel versions listed. Users should update to these patched versions to remediate the vulnerability. Since this is not a cloud service, remediation depends on applying the vendor-provided patches.
Description
A vulnerability in the Linux kernel's ACPICA component related to validating the byte_count in the function acpi_ps_get_next_package_length() has been resolved. This issue involved improper validation of package length reading, which could potentially lead to incorrect handling of ACPI package data. The vulnerability affects specific Linux kernel versions listed and is rated medium severity.
References
- ubuntu.com/security/CVE-2026-97453 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97453 (opens in a new tab)
- git.kernel.org/stable/c/780f380c66b80030379bec65bb1bd09ce6f6d9fc (opens in a new tab)
- git.kernel.org/stable/c/9bc0e8c3df689765ad5161eb3aed15de8544f5ce (opens in a new tab)
- git.kernel.org/stable/c/d49c6ee08365a8596f639da46eb7e71752b0cd42 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97453 (opens in a new tab)
- git.kernel.org/stable/c/37e60db04eed9d6c5801d63f99cfd3af99b9a2c8 (opens in a new tab)
- git.kernel.org/stable/c/6b9904fc65d82bea4922a33038d075488954bcc9 (opens in a new tab)
- git.kernel.org/stable/c/6e0d26e6ec90340533722214b7a923521f91caa2 (opens in a new tab)
- git.kernel.org/stable/c/802f83e628b8fa6106428ef05d3fb03f99816fd6 (opens in a new tab)