Description
In the Linux kernel, the following vulnerability has been resolved: net: phy: leds: fix memory leak A network restart test on a router led to an out-of-memory condition, which was traced to a memory leak in the PHY LED trigger code. The root cause is misuse of the devm API. The registration function (phy_led_triggers_register) is called from phy_attach_direct, not phy_probe, and the unregister function (phy_led_triggers_unregister) is called from phy_detach, not phy_remove. This means the register and unregister functions can be called multiple times for the same PHY device, but devm-allocated memory is not freed until the driver is unbound. This also prevents kmemleak from detecting the leak, as the devm API internally stores the allocated pointer. Fix this by replacing devm_kzalloc/devm_kcalloc with standard kzalloc/kcalloc, and add the corresponding kfree calls in the unregister path.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
2e0bc452f4721520502575362a9cd3c1248d2337 to < 966d6494e2ed9be9052fcd9815afba830896aaf8affected2e0bc452f4721520502575362a9cd3c1248d2337 to < 95bed65cc0eb2a610550abf849a8b94374da80a7affected2e0bc452f4721520502575362a9cd3c1248d2337 to < 663c3da86e807c6c07ed48f911c7526fad6fe1ffaffected2e0bc452f4721520502575362a9cd3c1248d2337 to < f41f097f68a33d392579885426d0734a81219501affected2e0bc452f4721520502575362a9cd3c1248d2337 to < 618541a6cc1511064dfa58c89b3445e21844092faffected2e0bc452f4721520502575362a9cd3c1248d2337 to < 41143e71052a00d654c15dc924fda50c1e7357d0affected2e0bc452f4721520502575362a9cd3c1248d2337 to < 7f3d5880800f962c347777c4f8358f29f5fc403caffected2e0bc452f4721520502575362a9cd3c1248d2337 to < b7f0ee992adf601aa00c252418266177eb7ac2bcaffected
Linux Linux
Default version status: affected
4.10affected0 to < 4.10unaffected5.4.293 to ≤ 5.4.*unaffected5.10.237 to ≤ 5.10.*unaffected5.15.181 to ≤ 5.15.*unaffected6.1.136 to ≤ 6.1.*unaffected6.6.89 to ≤ 6.6.*unaffected6.12.26 to ≤ 6.12.*unaffected6.14.5 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/966d6494e2ed9be9052fcd9815afba830896aaf8 ↗
- https://git.kernel.org/stable/c/95bed65cc0eb2a610550abf849a8b94374da80a7 ↗
- https://git.kernel.org/stable/c/663c3da86e807c6c07ed48f911c7526fad6fe1ff ↗
- https://git.kernel.org/stable/c/f41f097f68a33d392579885426d0734a81219501 ↗
- https://git.kernel.org/stable/c/618541a6cc1511064dfa58c89b3445e21844092f ↗
- https://git.kernel.org/stable/c/41143e71052a00d654c15dc924fda50c1e7357d0 ↗
- https://git.kernel.org/stable/c/7f3d5880800f962c347777c4f8358f29f5fc403c ↗
- https://git.kernel.org/stable/c/b7f0ee992adf601aa00c252418266177eb7ac2bc ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html ↗