CVE-2026-74604: Linux kernel · Revert "thermal/drivers/hwmon: Cleanup coding style a bit
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 8.4 High · fixed in 5.15.0-1117.124~20.04.1 : patch Linux kernel soon.
Data as of 26 Oct 2026, 12:55 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.15.0-1117.124~20.04.1, 5.15.0-1123.132~20.04.1, 5.15.0-1122.131~20.04.1 +27
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 22 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
An official fix is available and has been released by the vendor. Users should apply the updated Linux kernel packages that revert the problematic commit to remediate this vulnerability. No additional mitigation actions are required beyond applying the patch.
Description
A use-after-free vulnerability was introduced in the Linux kernel due to a reverted commit that removed a valid check in the thermal hardware monitoring driver. This flaw was fixed by reverting the problematic commit. The vulnerability affects specific Linux kernel versions and has a CVSS score of 8.4, indicating high impact on confidentiality, integrity, and availability. No known exploits are reported in the wild. A patch is available to address this issue.
References
- nvd.nist.gov/vuln/detail/CVE-2026-74604 (opens in a new tab)
- git.kernel.org/stable/c/2434f4765da8ccd7ef31be88b86f1bfa2e95be11 (opens in a new tab)
- git.kernel.org/stable/c/6a48ee9a5bda0f8ee501f9bef159fb9f39ff519a (opens in a new tab)
- git.kernel.org/stable/c/6b446d335ba16e93a266dd77adf1ba51abc82df4 (opens in a new tab)
- git.kernel.org/stable/c/8d34019d1413629a434a7e8d9f91c76d256196a0 (opens in a new tab)
- git.kernel.org/stable/c/999e573212d5f1debf073c68be35e55bbfad12fc (opens in a new tab)
- git.kernel.org/stable/c/b4c01ae6dd56d9dfd96bd1b29c28afa8fa06b366 (opens in a new tab)
- git.kernel.org/stable/c/ff8da20b6f47c48d46e47f93f7a59e2d56ee9107 (opens in a new tab)
- ubuntu.com/security/CVE-2026-74604 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-74604 (opens in a new tab)
- ubuntu.com/security/notices/USN-8878-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8879-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8877-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8875-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8886-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8875-2 (opens in a new tab)