{"id":"CVE-2025-37989","summary":"net: phy: leds: fix memory leak","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phy: leds: fix memory leak\n\nA network restart test on a router led to an out-of-memory condition,\nwhich was traced to a memory leak in the PHY LED trigger code.\n\nThe root cause is misuse of the devm API. The registration function\n(phy_led_triggers_register) is called from phy_attach_direct, not\nphy_probe, and the unregister function (phy_led_triggers_unregister)\nis called from phy_detach, not phy_remove. This means the register and\nunregister functions can be called multiple times for the same PHY\ndevice, but devm-allocated memory is not freed until the driver is\nunbound.\n\nThis also prevents kmemleak from detecting the leak, as the devm API\ninternally stores the allocated pointer.\n\nFix this by replacing devm_kzalloc/devm_kcalloc with standard\nkzalloc/kcalloc, and add the corresponding kfree calls in the unregister\npath.","modified":"2026-04-16T04:40:25.522387082Z","published":"2025-05-20T17:09:21.419Z","related":["SUSE-SU-2025:01964-1","SUSE-SU-2025:01965-1","SUSE-SU-2025:01983-1","SUSE-SU-2025:02000-1","SUSE-SU-2025:02254-1","SUSE-SU-2025:02307-1","SUSE-SU-2025:02333-1","SUSE-SU-2025:02923-1","SUSE-SU-2025:20408-1","SUSE-SU-2025:20413-1","SUSE-SU-2025:20419-1","SUSE-SU-2025:20421-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37989.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/41143e71052a00d654c15dc924fda50c1e7357d0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/618541a6cc1511064dfa58c89b3445e21844092f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/663c3da86e807c6c07ed48f911c7526fad6fe1ff"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7f3d5880800f962c347777c4f8358f29f5fc403c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/95bed65cc0eb2a610550abf849a8b94374da80a7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/966d6494e2ed9be9052fcd9815afba830896aaf8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b7f0ee992adf601aa00c252418266177eb7ac2bc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f41f097f68a33d392579885426d0734a81219501"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37989.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-37989"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2e0bc452f4721520502575362a9cd3c1248d2337"},{"fixed":"966d6494e2ed9be9052fcd9815afba830896aaf8"},{"fixed":"95bed65cc0eb2a610550abf849a8b94374da80a7"},{"fixed":"663c3da86e807c6c07ed48f911c7526fad6fe1ff"},{"fixed":"f41f097f68a33d392579885426d0734a81219501"},{"fixed":"618541a6cc1511064dfa58c89b3445e21844092f"},{"fixed":"41143e71052a00d654c15dc924fda50c1e7357d0"},{"fixed":"7f3d5880800f962c347777c4f8358f29f5fc403c"},{"fixed":"b7f0ee992adf601aa00c252418266177eb7ac2bc"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-37989.json"}}],"schema_version":"1.7.5"}