CVE-2025-38546 - Linux ATM Clip VCC Memory Leak

CVE-2025-38546 - Linux ATM Clip VCC Memory Leak

https://cvefeed.io/rssfeed/latest.atom / Sat, 08/16/2025 - 17:35
CVE ID : CVE-2025-38546
Published : Aug. 16, 2025, 12:15 p.m. | 2 hours, 55 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: atm: clip: Fix memory leak of struct clip_vcc. ioctl(ATMARP_MKIP) allocates struct clip_vcc and set it to vcc->user_back. The code assumes that vcc_destroy_socket() passes NULL skb to vcc->push() when the socket is close()d, and then clip_push() frees clip_vcc. However, ioctl(ATMARPD_CTRL) sets NULL to vcc->push() in atm_init_atmarp(), resulting in memory leak. Let's serialise two ioctl() by lock_sock() and check vcc->push() in atm_init_atmarp() to prevent memleak.
Severity: 0.0 | NA
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