CVE-2026-46270

HIGH EPSS 2.9%
Published Jun 3, 20263w ago · Modified Jun 17, 20261w ago
8.4 CVSS 3.1
High
Find Similar
Published Jun 3, 2026 3w ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: 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()`. 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
8.4
Exploitability
2.5
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥4.2  –  <5.10.252
linuxlinux_kernel*≥5.11  –  <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 8

  • git.kernel.org https://git.kernel.org/stable/c/2178dc65d45e2f7bcaa8af8d80d100419bdab251
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/62d753b916bd500bb269b7078cdab73198ab4718
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/64e15155095f39f4dec9b4659da1238ef8fc54d4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/721449a15170fc5f028a7576d7f65b9f60d53482
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a39f8f06216f73ef40e71e2fe4ad071964c1fd36
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/af261f218a7606f93d2c786353d60bb4feb56ef0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d4e2e3c3caa26b93aa9f36d0a6824b584e2a8dfc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e2febe375e5ea5afed92f4cd9711bde8f24ee6d2
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2178dc65d45e2f7bcaa8af8d80d100419bdab251
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/62d753b916bd500bb269b7078cdab73198ab4718
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/64e15155095f39f4dec9b4659da1238ef8fc54d4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/721449a15170fc5f028a7576d7f65b9f60d53482
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a39f8f06216f73ef40e71e2fe4ad071964c1fd36
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/af261f218a7606f93d2c786353d60bb4feb56ef0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d4e2e3c3caa26b93aa9f36d0a6824b584e2a8dfc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e2febe375e5ea5afed92f4cd9711bde8f24ee6d2
    Patch