gpio: pca953x: fix pca953x_irq_bus_sync_unlock regmap lock (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.18 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: gpio: pca953x: fix pca953x_irq_bus_sync_unlock regmap lock Locking is disabled in the regmap config as this driver uses its own lock. This means that all calls to regmap functions (read or write) must hold the i2c_lock. The function pca953x_irq_bus_sync_unlock() did not do this, and it was therefore possible that multiple threads could cause an incorrect register to be read/written. A previous patch partly fixed this, but only protected the write to the interrupt mask register, and not the read from the direction register.
References
- https://git.kernel.org/stable/c/58ed56c093a857c19f04cf3db1f02d2e793aec88
- https://git.kernel.org/stable/c/5d05c4252c09ce10624be2197853c80bf87424e4
- https://git.kernel.org/stable/c/41255e64eb9dd87b0b8675f4e47a9c67bcef6e39
- https://git.kernel.org/stable/c/bf3f37c2d40b51deb79aea910f28999d7c8c6b5a
- https://git.kernel.org/stable/c/e6a2f5f845f50b0c4299bace5111f56d3390a090
- https://git.kernel.org/stable/c/9dc325327babe7f159e84cbe9380a45342da0585
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-64420
- GCVE · GCVE-0-2026-74733
CERT-FR advisories
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 58a5c93bd1a6e949267400080f07e57ffe05ec34 < 58ed56c093a857c19f04cf3db1f02d2e793aec88 ; affected e2ecdddca80dd845df42376e4b0197fe97018ba2 < 5d05c4252c09ce10624be2197853c80bf87424e4 ; affected bfc6444b57dc7186b6acc964705d7516cbaf3904 < 41255e64eb9dd87b0b8675f4e47a9c67bcef6e39 ; affected bfc6444b57dc7186b6acc964705d7516cbaf3904 < bf3f37c2d40b51deb79aea910f28999d7c8c6b5a ; affected bfc6444b57dc7186b6acc964705d7516cbaf3904 < e6a2f5f845f50b0c4299bace5111f56d3390a090 ; affected bfc6444b57dc7186b6acc964705d7516cbaf3904 < 9dc325327babe7f159e84cbe9380a45342da0585 |
| Linux · Linux | affected 6.10 ; unaffected 0 < 6.10 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.114 ≤ 6.12.* ; unaffected 6.18.57 ≤ 6.18.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |