| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <2025052038-CVE-2025-37989-c834@gregkh> Date: Tue, 20 May 2025 19:07:42 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2025-37989: net: phy: leds: fix memory leak From: Greg Kroah-Hartman <gregkh@...nel.org> 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. The Linux kernel CVE team has assigned CVE-2025-37989 to this issue. Affected and fixed versions =========================== Issue introduced in 4.10 with commit 2e0bc452f4721520502575362a9cd3c1248d2337 and fixed in 5.4.293 with commit 966d6494e2ed9be9052fcd9815afba830896aaf8 Issue introduced in 4.10 with commit 2e0bc452f4721520502575362a9cd3c1248d2337 and fixed in 5.10.237 with commit 95bed65cc0eb2a610550abf849a8b94374da80a7 Issue introduced in 4.10 with commit 2e0bc452f4721520502575362a9cd3c1248d2337 and fixed in 5.15.181 with commit 663c3da86e807c6c07ed48f911c7526fad6fe1ff Issue introduced in 4.10 with commit 2e0bc452f4721520502575362a9cd3c1248d2337 and fixed in 6.1.136 with commit f41f097f68a33d392579885426d0734a81219501 Issue introduced in 4.10 with commit 2e0bc452f4721520502575362a9cd3c1248d2337 and fixed in 6.6.89 with commit 618541a6cc1511064dfa58c89b3445e21844092f Issue introduced in 4.10 with commit 2e0bc452f4721520502575362a9cd3c1248d2337 and fixed in 6.12.26 with commit 41143e71052a00d654c15dc924fda50c1e7357d0 Issue introduced in 4.10 with commit 2e0bc452f4721520502575362a9cd3c1248d2337 and fixed in 6.14.5 with commit 7f3d5880800f962c347777c4f8358f29f5fc403c Issue introduced in 4.10 with commit 2e0bc452f4721520502575362a9cd3c1248d2337 and fixed in 6.15-rc4 with commit b7f0ee992adf601aa00c252418266177eb7ac2bc Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2025-37989 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/net/phy/phy_led_triggers.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: 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
Powered by blists - more mailing lists