CVE-2025-38546

atm: clip: Fix memory leak of struct clip_vcc.

State: Published
Severity: Not scored
Published: Aug 16, 2025
Updated: May 11, 2026
Reserved: Apr 16, 2025

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 2fb37ab3226606cbfc9b2b6f9e301b0b735734c5Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9e4dbeee56f614e3f1e166e5d0655a999ea185efAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 1c075e88d5859a2c6b43b27e0e46fb281cef8039Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 1fb9fb5a4b5cec2d56e26525ef8c519de858fa60Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9f771816f14da6d6157a8c30069091abf6b566fbAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before cb2e4a2f8f268d8fba6662f663a2e57846f14a8dAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 62dba28275a9a3104d4e33595c7b3328d4032d8dAffected
LinuxLinux	2.6.12Affected before 2.6.12Not affected 5.4.296 through 5.4.Not affected 5.10.240 through 5.10.Not affected 5.15.189 through 5.15.Not affected 6.1.146 through 6.1.Not affected 6.6.99 through 6.6.Not affected 6.12.39 through 6.12.Not affected 6.15.7 through 6.15.*Not affected 6.16 and laterNot affected

Product

Versions

LinuxLinux

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 2fb37ab3226606cbfc9b2b6f9e301b0b735734c5Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9e4dbeee56f614e3f1e166e5d0655a999ea185efAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 1c075e88d5859a2c6b43b27e0e46fb281cef8039Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 1fb9fb5a4b5cec2d56e26525ef8c519de858fa60Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9f771816f14da6d6157a8c30069091abf6b566fbAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before cb2e4a2f8f268d8fba6662f663a2e57846f14a8dAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 62dba28275a9a3104d4e33595c7b3328d4032d8dAffected

LinuxLinux

2.6.12Affected
before 2.6.12Not affected
5.4.296 through 5.4.*Not affected
5.10.240 through 5.10.*Not affected
5.15.189 through 5.15.*Not affected
6.1.146 through 6.1.*Not affected
6.6.99 through 6.6.*Not affected
6.12.39 through 6.12.*Not affected
6.15.7 through 6.15.*Not affected
6.16 and laterNot affected

References

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