CVE-2026-89467: Linux kernel · power: supply: qcom_battmgr: fix use-after-free
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 14:05 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 11 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 properly manages the lifecycle of the enable_work worker using devm_work_autocancel() and adjusts the cleanup order to prevent use-after-free conditions. Users should update to a Linux kernel version that includes this fix. Since this is a kernel-level issue, applying the official kernel patches or updated kernel packages from the vendor is recommended.
Description
A use-after-free vulnerability in the Linux kernel's Qualcomm battery manager (qcom_battmgr) power supply driver has been fixed. The issue involves the qcom_battmgr_pdr_notify() function queuing work that accesses freed memory due to improper management of device resources. This could lead to a worker accessing the battmgr structure after it has been freed. The fix involves making the work device-managed and ensuring proper cleanup order to prevent further queuing and cancel pending work before freeing battmgr.
References
- nvd.nist.gov/vuln/detail/CVE-2026-89467 (opens in a new tab)
- git.kernel.org/stable/c/06618447029c6dddaa02f6e9528efe5dd49fc329 (opens in a new tab)
- git.kernel.org/stable/c/49fbcd3da2958159370d25dafbf736e654a4d59b (opens in a new tab)
- git.kernel.org/stable/c/4e40befedfc8ed86f44e1f81df92d13c149c9f8d (opens in a new tab)
- ubuntu.com/security/CVE-2026-89467 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-89467 (opens in a new tab)
- git.kernel.org/linus/4e40befedfc8ed86f44e1f81df92d13c149c9f8d (opens in a new tab)
- git.kernel.org/stable/c/77fefca305db44b0edd3fcdb52d781771c1ce366 (opens in a new tab)