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.
Metrics
Affected Vendors & Products
References
History
Sat, 16 Aug 2025 11:30:00 +0000
Type | Values Removed | Values Added |
---|---|---|
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. | |
Title | atm: clip: Fix memory leak of struct clip_vcc. | |
References |
|
|

Status: PUBLISHED
Assigner: Linux
Published: 2025-08-16T11:22:20.477Z
Updated: 2025-08-16T11:22:20.477Z
Reserved: 2025-04-16T04:51:24.024Z
Link: CVE-2025-38546

No data.

Status : Received
Published: 2025-08-16T12:15:30.620
Modified: 2025-08-16T12:15:30.620
Link: CVE-2025-38546

No data.