CVE-2025-37989
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.
Does this matter?
Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.20% probability · 10th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://git.kernel.org/stable/c/41143e71052a00d654c15dc924fda50c1e7357d0Patch
- https://git.kernel.org/stable/c/618541a6cc1511064dfa58c89b3445e21844092fPatch
- https://git.kernel.org/stable/c/663c3da86e807c6c07ed48f911c7526fad6fe1ffPatch
- https://git.kernel.org/stable/c/7f3d5880800f962c347777c4f8358f29f5fc403cPatch
- https://git.kernel.org/stable/c/95bed65cc0eb2a610550abf849a8b94374da80a7Patch
- https://git.kernel.org/stable/c/966d6494e2ed9be9052fcd9815afba830896aaf8Patch
- https://git.kernel.org/stable/c/b7f0ee992adf601aa00c252418266177eb7ac2bcPatch
- https://git.kernel.org/stable/c/f41f097f68a33d392579885426d0734a81219501Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.