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Review reviewHigh

CVE-2026-46270

Linux Linux, linux kernel

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...

CVSS
8.4
EPSS
0.13%
2.93% percentile
CISA KEV
Not listed
Published
2026.06.04
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.13%
Technical severityCVSS 8.4

Vulnerability overview

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...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < d4e2e3c3caa26b93aa9f36d0a6824b584e2a8dfc, >= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < 62d753b916bd500bb269b7078cdab73198ab4718, >= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < a39f8f06216f73ef40e71e2fe4ad071964c1fd36, >= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < af261f218a7606f93d2c786353d60bb4feb56ef0, >= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < 2178dc65d45e2f7bcaa8af8d80d100419bdab251, >= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < 64e15155095f39f4dec9b4659da1238ef8fc54d4, >= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < 721449a15170fc5f028a7576d7f65b9f60d53482, >= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < e2febe375e5ea5afed92f4cd9711bde8f24ee6d2, >= 4.2, >= 4.2 < 5.10.252, >= 5.11 < 5.15.202, >= 5.16 < 6.1.165, >= 6.2 < 6.6.128, >= 6.7 < 6.12.75, >= 6.13 < 6.18.14, >= 6.19 < 6.19.4
Fixed versions
5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2026-46270 — Linux Linux, linux kernel | SECUFOCUS NOW