CVE-2026-80624: Linux kernel · mfd: cs42l43: Sanity check firmware size
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 7.0.0-1014.14~24.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:16 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.
- Patch
- Available – fixed in 7.0.0-1014.14~24.04.1, 7.0.0-1017.17~24.04.1, 7.0.0-1016.16~24.04.1 +11
Exploitation evidence
Disclosed: evidence found.
CVE published 28 Aug 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
Upgrade to a fixed release listed under Affected software.
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 patch is available that adds the missing firmware size sanity check. Users should apply the official Linux kernel updates that address this issue. The vendor advisory confirms that this vulnerability has been fixed.
Description
A vulnerability in the Linux kernel's mfd: cs42l43 driver was resolved by adding a sanity check on firmware size. Previously, the code only checked if firmware was received but did not verify that the firmware size exceeded the firmware header size. This omission could lead to out-of-bounds memory access when the firmware pointer is dereferenced as a header structure pointer. The issue affects specific Linux kernel versions and has been patched.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80624 (opens in a new tab)
- git.kernel.org/stable/c/17d79248b4f370663f9d351409a130fc1ed9416d (opens in a new tab)
- git.kernel.org/stable/c/197a4c54d8a94fe2fb7829661b29f0859c10feb5 (opens in a new tab)
- git.kernel.org/stable/c/2ce02059ceb6311a33026b62e6e4dc4ed22a3aef (opens in a new tab)
- git.kernel.org/stable/c/b6ef1a74b3ec254f87a6a3c554fe8f8083ebd37c (opens in a new tab)
- git.kernel.org/stable/c/d35e4032f16d7621468c8b56816e7935ebf590a7 (opens in a new tab)
- ubuntu.com/security/CVE-2026-80624 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80624 (opens in a new tab)
- git.kernel.org/linus/b6ef1a74b3ec254f87a6a3c554fe8f8083ebd37c (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8889-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-3 (opens in a new tab)