cbcvebase.
CVE-2026-46270
published 2026-06-03

CVE-2026-46270: In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: Fix use-after-free in power_supply_changed() Using the `devm_`…

PriorityP341high8.4CVSS 3.1
AVLACLPRNUINSUCHIHAH
EPSS
0.13%
2.9th percentile
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.

Affected

57 ranges· showing 25
VendorProductVersion rangeFixed in
linuxlinux
linuxlinux>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < d4e2e3c3caa26b93aa9f36d0a6824b584e2a8dfcd4e2e3c3caa26b93aa9f36d0a6824b584e2a8dfc
linuxlinux>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < 62d753b916bd500bb269b7078cdab73198ab471862d753b916bd500bb269b7078cdab73198ab4718
linuxlinux>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < a39f8f06216f73ef40e71e2fe4ad071964c1fd36a39f8f06216f73ef40e71e2fe4ad071964c1fd36
linuxlinux>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < af261f218a7606f93d2c786353d60bb4feb56ef0af261f218a7606f93d2c786353d60bb4feb56ef0
linuxlinux>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < 2178dc65d45e2f7bcaa8af8d80d100419bdab2512178dc65d45e2f7bcaa8af8d80d100419bdab251
linuxlinux>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < 64e15155095f39f4dec9b4659da1238ef8fc54d464e15155095f39f4dec9b4659da1238ef8fc54d4
linuxlinux>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < 721449a15170fc5f028a7576d7f65b9f60d53482721449a15170fc5f028a7576d7f65b9f60d53482
linuxlinux>= e86d69dd786e94046b8f5be7df1b9a8226a40b2a < e2febe375e5ea5afed92f4cd9711bde8f24ee6d2e2febe375e5ea5afed92f4cd9711bde8f24ee6d2
linuxlinux_kernel>= 4.2 < 5.10.2525.10.252
linuxlinux_kernel>= 5.11 < 5.15.2025.15.202
linuxlinux_kernel>= 5.16 < 6.1.1656.1.165
linuxlinux_kernel>= 6.13 < 6.18.146.18.14
linuxlinux_kernel>= 6.19 < 6.19.46.19.4
linuxlinux_kernel>= 6.2 < 6.6.1286.6.128
linuxlinux_kernel>= 6.7 < 6.12.756.12.75
ubuntulinux
ubuntulinux-aws
ubuntulinux-aws-5.15
ubuntulinux-aws-6.8
ubuntulinux-aws-fips
ubuntulinux-azure
ubuntulinux-azure-5.15
ubuntulinux-azure-6.8
ubuntulinux-azure-fde

CVSS provenance

nvdv3.18.4HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_ubuntu8.8HIGH
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