CVE-2026-89463: Linux kernel · power: supply: ucs1002: fix use-after-free on remove
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in b389325e1ad3bfd113aac6a1fcf1658fec2aebb1 : update Linux kernel when convenient.
Data as of 30 Oct 2026, 13:05 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in b389325e1ad3bfd113aac6a1fcf1658fec2aebb1, a9a7bb801c443a4d9fc623c4a47deb53accb70bb, 35242c93d35f391afdc84cef6236b8ad57f1df24 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 11 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 30 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available and has been applied in the Linux kernel. Users should update to the fixed kernel versions containing the patches identified by the provided commit hashes. No additional mitigation is required once the system is updated.
Description
A use-after-free vulnerability in the Linux kernel's power supply driver for ucs1002 was fixed. The issue occurs because the delayed work scheduled by the alert IRQ handler can run after the driver data has been freed, leading to a use-after-free condition. The fix involves registering the delayed work with devm_delayed_work_autocancel to ensure proper cancellation before freeing resources.
References
- git.kernel.org/stable/c/b389325e1ad3bfd113aac6a1fcf1658fec2aebb1 (opens in a new tab)
- git.kernel.org/stable/c/00c19f8a9a58a318a76fd6f735a8aab3f8ead393 (opens in a new tab)
- git.kernel.org/stable/c/a9a7bb801c443a4d9fc623c4a47deb53accb70bb (opens in a new tab)
- git.kernel.org/stable/c/2ec4d203ecb06d327af67e32097fe8f774838a40 (opens in a new tab)
- git.kernel.org/stable/c/4ca2a4678202f15eb790eb7f1d562061709caea7 (opens in a new tab)
- git.kernel.org/stable/c/39b60d615dfa1725c235351fb12bc72e5f8a8d32 (opens in a new tab)
- git.kernel.org/stable/c/35242c93d35f391afdc84cef6236b8ad57f1df24 (opens in a new tab)
- git.kernel.org/stable/c/609af0ceeaefdfa42cd01dd060b20f2e41f9a232 (opens in a new tab)