CVE - CVE-2025-37989

CVE-ID
CVE-2025-37989	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/41143e71052a00d654c15dc924fda50c1e7357d0 URL:https://git.kernel.org/stable/c/41143e71052a00d654c15dc924fda50c1e7357d0 MISC:https://git.kernel.org/stable/c/618541a6cc1511064dfa58c89b3445e21844092f URL:https://git.kernel.org/stable/c/618541a6cc1511064dfa58c89b3445e21844092f MISC:https://git.kernel.org/stable/c/663c3da86e807c6c07ed48f911c7526fad6fe1ff URL:https://git.kernel.org/stable/c/663c3da86e807c6c07ed48f911c7526fad6fe1ff MISC:https://git.kernel.org/stable/c/7f3d5880800f962c347777c4f8358f29f5fc403c URL:https://git.kernel.org/stable/c/7f3d5880800f962c347777c4f8358f29f5fc403c MISC:https://git.kernel.org/stable/c/95bed65cc0eb2a610550abf849a8b94374da80a7 URL:https://git.kernel.org/stable/c/95bed65cc0eb2a610550abf849a8b94374da80a7 MISC:https://git.kernel.org/stable/c/966d6494e2ed9be9052fcd9815afba830896aaf8 URL:https://git.kernel.org/stable/c/966d6494e2ed9be9052fcd9815afba830896aaf8 MISC:https://git.kernel.org/stable/c/b7f0ee992adf601aa00c252418266177eb7ac2bc URL:https://git.kernel.org/stable/c/b7f0ee992adf601aa00c252418266177eb7ac2bc MISC:https://git.kernel.org/stable/c/f41f097f68a33d392579885426d0734a81219501 URL:https://git.kernel.org/stable/c/f41f097f68a33d392579885426d0734a81219501
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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