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VulnerabilityPublished Updated

CVE-2026-89463: Linux kernel · power: supply: ucs1002: fix use-after-free on remove

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in b389325e1ad3bfd113aac6a1fcf1658fec2aebb1 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 13:05 UTC

Severity
Medium

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

  1. Disclosed: evidence found.

    CVE published 11 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 81196e2e57fc5b88f6b8ca98372a3dde047aa49d, < b389325e1ad3bfd113aac6a1fcf1658fec2aebb1
Fixed in
  • b389325e1ad3bfd113aac6a1fcf1658fec2aebb1
LinuxLinuxAffected
  • ≥ 81196e2e57fc5b88f6b8ca98372a3dde047aa49d, < a9a7bb801c443a4d9fc623c4a47deb53accb70bb
Fixed in
  • a9a7bb801c443a4d9fc623c4a47deb53accb70bb
LinuxLinuxAffected
  • ≥ 81196e2e57fc5b88f6b8ca98372a3dde047aa49d, < 35242c93d35f391afdc84cef6236b8ad57f1df24
Fixed in
  • 35242c93d35f391afdc84cef6236b8ad57f1df24
LinuxLinuxAffected
  • ≥ 81196e2e57fc5b88f6b8ca98372a3dde047aa49d, < 609af0ceeaefdfa42cd01dd060b20f2e41f9a232
Fixed in
  • 609af0ceeaefdfa42cd01dd060b20f2e41f9a232
LinuxLinuxAffected
  • ≥ 81196e2e57fc5b88f6b8ca98372a3dde047aa49d, < 39b60d615dfa1725c235351fb12bc72e5f8a8d32
Fixed in
  • 39b60d615dfa1725c235351fb12bc72e5f8a8d32
LinuxLinuxAffected
  • ≥ 81196e2e57fc5b88f6b8ca98372a3dde047aa49d, < 4ca2a4678202f15eb790eb7f1d562061709caea7
Fixed in
  • 4ca2a4678202f15eb790eb7f1d562061709caea7

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

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