Use-after-free in Linux kernel - CVE-2026-45885
Published: May 28, 2026
Vulnerability identifier: #VU132603
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-45885
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local attacker to cause a denial of service or corrupt memory.
The vulnerability exists due to use-after-free in the cpcap-battery IRQ handler when handling an interrupt during device removal or probe. A local attacker can trigger a race condition to cause a denial of service or corrupt memory.
The issue can also occur if an interrupt fires before the power_supply handle is registered, leading to use of an uninitialized handle in power_supply_changed().
How to mitigate CVE-2026-45885
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/2841bbb5a35c4449c0a0458e8e476b2a62f95147
- https://git.kernel.org/stable/c/2ce2334be155bd8bad6377e99984246ce4dbd08c
- https://git.kernel.org/stable/c/3ff75cba1c98349a23a8f9333981deba1972cc11
- https://git.kernel.org/stable/c/642f33e34b969eedec334738fd5df95d2dc42742
- https://git.kernel.org/stable/c/c549dd3de4b3f6e726d1b8386d40ccf7d3abdbe4
- https://git.kernel.org/stable/c/cbb9b07f88a9ef6518934c41eb3e8cf840d657d5
- https://git.kernel.org/stable/c/e261be6f18929f2397cd54cd583a2df624c129c1
- https://git.kernel.org/stable/c/f3fbe309c9bfe1aac1e2b26543e9dc4829f3275a