CVE-2025-37989

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Source
https://cve.org/CVERecord?id=CVE-2025-37989
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-37989.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-37989
Downstream
Related
Published
2025-05-20T17:09:21.419Z
Modified
2026-03-20T12:42:36.570843Z
Summary
net: phy: leds: fix memory leak
Details

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 (phyledtriggersregister) is called from phyattachdirect, not phyprobe, and the unregister function (phyledtriggersunregister) is called from phydetach, 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 devmkzalloc/devmkcalloc with standard kzalloc/kcalloc, and add the corresponding kfree calls in the unregister path.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37989.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / 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/osv-test-cve-osv-conversion/osv-output/CVE-2025-37989.json"