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CVE-2025-37989— net: phy: leds: fix memory leak

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于PHY LED触发器代码错误使用devm API，可能导致内存泄漏。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2e0bc452f4721520502575362a9cd3c1248d2337< 966d6494e2ed9be9052fcd9815afba830896aaf8 affected
2e0bc452f4721520502575362a9cd3c1248d2337< 95bed65cc0eb2a610550abf849a8b94374da80a7 affected
2e0bc452f4721520502575362a9cd3c1248d2337< 663c3da86e807c6c07ed48f911c7526fad6fe1ff affected
2e0bc452f4721520502575362a9cd3c1248d2337< f41f097f68a33d392579885426d0734a81219501 affected
2e0bc452f4721520502575362a9cd3c1248d2337< 618541a6cc1511064dfa58c89b3445e21844092f affected
2e0bc452f4721520502575362a9cd3c1248d2337< 41143e71052a00d654c15dc924fda50c1e7357d0 affected
2e0bc452f4721520502575362a9cd3c1248d2337< 7f3d5880800f962c347777c4f8358f29f5fc403c affected
2e0bc452f4721520502575362a9cd3c1248d2337< b7f0ee992adf601aa00c252418266177eb7ac2bc affected
… +10 more rows
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I. Basic Information for CVE-2025-37989

Vulnerability Information
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Vulnerability Title
net: phy: leds: fix memory leak
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于PHY LED触发器代码错误使用devm API，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 2e0bc452f4721520502575362a9cd3c1248d2337 ~ 966d6494e2ed9be9052fcd9815afba830896aaf8 -
Linux Linux 4.10 -

II. Public POCs for CVE-2025-37989

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III. Intelligence Information for CVE-2025-37989

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Patches & Fixes for CVE-2025-37989 (1)

Same Patch Batch · Linux · 2025-05-20 · 95 CVEs total

CVE-2025-37894 9.8 CRITICAL net: use sock_gen_put() when sk_state is TCP_TIME_WAIT
CVE-2025-37924 9.8 CRITICAL ksmbd: fix use-after-free in kerberos authentication
CVE-2025-37935 9.8 CRITICAL net: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM
CVE-2025-37959 9.4 CRITICAL bpf: Scrub packet on bpf_redirect_peer
CVE-2025-37926 8.8 HIGH ksmbd: fix use-after-free in ksmbd_session_rpc_open
CVE-2025-37899 8.8 HIGH ksmbd: fix use-after-free in session logoff
CVE-2025-37918 8.8 HIGH Bluetooth: btusb: avoid NULL pointer dereference in skb_dequeue()
CVE-2025-37943 8.8 HIGH wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi
CVE-2025-37944 8.8 HIGH wifi: ath12k: Fix invalid entry fetch in ath12k_dp_mon_srng_process
CVE-2025-37947 8.8 HIGH ksmbd: prevent out-of-bounds stream writes by validating *pos
CVE-2025-37952 8.8 HIGH ksmbd: Fix UAF in __close_file_table_ids
CVE-2025-37956 8.8 HIGH ksmbd: prevent rename with empty string
CVE-2025-37957 8.8 HIGH KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception
CVE-2025-37936 8.7 HIGH perf/x86/intel: KVM: Mask PEBS_ENABLE loaded for guest with vCPU's value.
CVE-2025-37973 8.1 HIGH wifi: cfg80211: fix out-of-bounds access during multi-link element defragmentation
CVE-2025-37901 7.8 HIGH irqchip/qcom-mpm: Prevent crash when trying to handle non-wake GPIOs
CVE-2025-37906 7.8 HIGH ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd
CVE-2025-37921 7.8 HIGH vxlan: vnifilter: Fix unlocked deletion of default FDB entry
CVE-2025-37923 7.8 HIGH tracing: Fix oob write in trace_seq_to_buffer()
CVE-2025-37903 7.8 HIGH drm/amd/display: Fix slab-use-after-free in hdcp

Showing top 20 of 95 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37989

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