CVE-2026-46252regulator: core: fix locking in regulator_resolve_supply() error path
- 5.5MediumCVSS base score
- 0.09%Exploitation in 30 daysEPSS · top 100% 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: regulator: core: fix locking in regulator_resolve_supply() error path If late enabling of a supply regulator fails in regulator_resolve_supply(), the code currently triggers a lockdep warning: WARNING: drivers/regulator/core.c:2649 at _regulator_put+0x80/0xa0, CPU#6: kworker/u32:4/596 ... Call trace: _regulator_put+0x80/0xa0 (P) regulator_resolve_supply+0x7cc/0xbe0 regulator_register_resolve_supply+0x28/0xb8 as the regulator_list_mutex must be held when calling _regulator_put(). To solve this, simply switch to using regulator_put(). While at it, we should also make sure that no concurrent access happens to our rdev while we clear out the supply pointer. Add appropriate locking to ensure that. While the code in question will be removed altogether in a follow-up commit, I believe it is still beneficial to have this corrected before removal for future reference.
Timeline
ID reserved
By Linux
- 21 days later
· 21 days later
Published
- 5 months later
· 5 months later
Record updated
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 · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.09% · top 100% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 36a1f1b6ddc6d1442424e29548e790633ca39c7b – < e77357dc2293283fc08a485b1e2e571d91d02622
- affected 36a1f1b6ddc6d1442424e29548e790633ca39c7b – < a8a2eab1166bc33ee38ca371cff425bdb5681e47
- affected 36a1f1b6ddc6d1442424e29548e790633ca39c7b – < 60747114fd2a38739130b715e7b2d40ce848f0be
- affected 36a1f1b6ddc6d1442424e29548e790633ca39c7b – < c84860dac7af7dc3c3e3c9ae86d65e222c2f3b0c
- affected 36a1f1b6ddc6d1442424e29548e790633ca39c7b – < 3b7fffd7a8984a1c009f668765ee7631fd6b87c8
- affected 36a1f1b6ddc6d1442424e29548e790633ca39c7b – < bde74af8d4466213007bdd42cc85fa72c861dea7
- affected 36a1f1b6ddc6d1442424e29548e790633ca39c7b – < c66e0db0f37290b53c57994f998bb55590364fd0
- affected 36a1f1b6ddc6d1442424e29548e790633ca39c7b – < 497330b203d2c59c5ff3fa4c34d14494d7203bc3
- affected 4.2
- unaffected < 4.2
- unaffected 5.10.260 – ≤ 5.10.*
- unaffected 5.15.211 – ≤ 5.15.*
- unaffected 6.1.177 – ≤ 6.1.*
- unaffected 6.6.144 – ≤ 6.6.*
- unaffected 6.12.95 – ≤ 6.12.*
- unaffected 6.18.37 – ≤ 6.18.*
- unaffected 6.19.4 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References8
- https://git.kernel.org/stable/c/e77357dc2293283fc08a485b1e2e571d91d02622 (opens in a new tab)
- https://git.kernel.org/stable/c/a8a2eab1166bc33ee38ca371cff425bdb5681e47 (opens in a new tab)
- https://git.kernel.org/stable/c/60747114fd2a38739130b715e7b2d40ce848f0be (opens in a new tab)
- https://git.kernel.org/stable/c/c84860dac7af7dc3c3e3c9ae86d65e222c2f3b0c (opens in a new tab)
- https://git.kernel.org/stable/c/3b7fffd7a8984a1c009f668765ee7631fd6b87c8 (opens in a new tab)
- https://git.kernel.org/stable/c/bde74af8d4466213007bdd42cc85fa72c861dea7 (opens in a new tab)
- https://git.kernel.org/stable/c/c66e0db0f37290b53c57994f998bb55590364fd0 (opens in a new tab)
- https://git.kernel.org/stable/c/497330b203d2c59c5ff3fa4c34d14494d7203bc3 (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-2026-34114 (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-2026-46252)Record last updated .