CVE-2026-45879power: supply: bq25980: Fix use-after-free in power_supply_changed()
Updated under an hour ago ()
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In the Linux kernel, the following vulnerability has been resolved: power: supply: bq25980: 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
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- May 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 5069185fc18e810715a91d80fcd075e03add600c builds before 86f93dfb23f5bf4f285c4256a7e909d222f7de56; 5069185fc18e810715a91d80fcd075e03add600c builds before 16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f; 5069185fc18e810715a91d80fcd075e03add600c builds before 0560a4b09c92e2ecaa883965cf6f9ca51c158ff9; 5069185fc18e810715a91d80fcd075e03add600c builds before 0de95d29d847c6217b7d5845e24a71a4aee7b359; 5069185fc18e810715a91d80fcd075e03add600c builds before 4aeaf03c17260415c2fdd55992f9ad4188d5455a; 5069185fc18e810715a91d80fcd075e03add600c builds before 03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c; from 5069185fc18e810715a91d80fcd075e03add600c before abea607ff2f62f4c0a5fb29f7fbdaaab163276a4; 5069185fc18e810715a91d80fcd075e03add600c builds before 5f0b1cb41906e86b64bf69f5ededb83b0d757c27 | CNA record |
linux linux_kernel linux:linux_kernel | from 5.10 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.14; from 6.19 before 6.19.4 | NVD |
References
- https://git.kernel.org/stable/c/86f93dfb23f5bf4f285c4256a7e909d222f7de56patch
- https://git.kernel.org/stable/c/16875e3b7bc9e59bfa0acaf1e43f275a6f42a30fpatch
- https://git.kernel.org/stable/c/0560a4b09c92e2ecaa883965cf6f9ca51c158ff9patch
- https://git.kernel.org/stable/c/0de95d29d847c6217b7d5845e24a71a4aee7b359patch
- https://git.kernel.org/stable/c/4aeaf03c17260415c2fdd55992f9ad4188d5455apatch
- https://git.kernel.org/stable/c/03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7cpatch
- https://git.kernel.org/stable/c/abea607ff2f62f4c0a5fb29f7fbdaaab163276a4patch
- https://git.kernel.org/stable/c/5f0b1cb41906e86b64bf69f5ededb83b0d757c27patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.