CVE-2026-45938power: supply: pm8916_lbc: Fix use-after-free in power_supply_changed()
- 7.8HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: power: supply: pm8916_lbc: 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.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Undergoing Analysis | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 98% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 – < dbe579e620ef0f53db490ec79a8566e4ea8918ac
- affected f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 – < 08e674e9862a2db46fb234eb7c5442455ece0131
- affected f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 – < d7d31fc99d248d5f47588f50dce5c7599c991c6a
- affected f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 – < b7508129978ae1e2ed9b0410396abc05def9c4eb
- affected 6.7
- unaffected < 6.7
- unaffected 6.12.75 – ≤ 6.12.*
- unaffected 6.18.14 – ≤ 6.18.*
- unaffected 6.19.4 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References4
- https://git.kernel.org/stable/c/dbe579e620ef0f53db490ec79a8566e4ea8918ac (opens in a new tab)
- https://git.kernel.org/stable/c/08e674e9862a2db46fb234eb7c5442455ece0131 (opens in a new tab)
- https://git.kernel.org/stable/c/d7d31fc99d248d5f47588f50dce5c7599c991c6a (opens in a new tab)
- https://git.kernel.org/stable/c/b7508129978ae1e2ed9b0410396abc05def9c4eb (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32222 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-45938)Record last updated .