CVE-2026-45946

HIGH EPSS 5.5%
Published May 27, 20261mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 27, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: power: supply: ab8500: Fix use-after-free in power_supply_changed() Using the `devm_` variant for requesting IRQ _before_ the `devm_` variant for allocating/registering the `power_supply` handle, means that the `power_supply` handle will be deallocated/unregistered _before_ the interrupt handler (since `devm_` naturally deallocates in reverse allocation order). This means that during removal, there is a race condition where an interrupt can fire just _after_ the `power_supply` handle has been freed, *but* just _before_ the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling `power_supply_changed()` with a freed `power_supply` handle. Which usually crashes the system or otherwise silently corrupts the memory... Note that there is a similar situation which can also happen during `probe()`; the possibility of an interrupt firing _before_ registering the `power_supply` handle. This would then lead to the nasty situation of using the `power_supply` handle *uninitialized* in `power_supply_changed()`. Commit 1c1f13a006ed ("power: supply: ab8500: Move to componentized binding") introduced this issue during a refactorization. Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `power_supply` handle.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
5.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥5.13.4  –  <5.15.202
linuxlinux_kernel*≥5.16  –  <6.1.165
linuxlinux_kernel*≥6.2  –  <6.6.128
linuxlinux_kernel*≥6.7  –  <6.12.75
linuxlinux_kernel*≥6.13  –  <6.18.14
linuxlinux_kernel*≥6.19  –  <6.19.4

References 7

  • git.kernel.org https://git.kernel.org/stable/c/43cbb78ee047b9b12d096d40e3be265969d4c1f8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/46dbda27b028d78087667e8280966b99cec015ca
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/551672981fe227122258a25a385a05f5c0746ad6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/709db4b476e254579d9c48ec34d397a41ca0c407
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/847eeb6c0efcd76c7def73857cf798a4fcd8f79b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c4af8a98bb52825a5331ae1d0604c0ea6956ba4b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f50433f2603def08b21a4bf2fd238687fb5cbde9
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/43cbb78ee047b9b12d096d40e3be265969d4c1f8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/46dbda27b028d78087667e8280966b99cec015ca
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/551672981fe227122258a25a385a05f5c0746ad6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/709db4b476e254579d9c48ec34d397a41ca0c407
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/847eeb6c0efcd76c7def73857cf798a4fcd8f79b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c4af8a98bb52825a5331ae1d0604c0ea6956ba4b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f50433f2603def08b21a4bf2fd238687fb5cbde9
    Patch