CVE-2025-38546

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2fb37ab3226606cbfc9b2b6f9e301b0b735734c5affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9e4dbeee56f614e3f1e166e5d0655a999ea185efaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1c075e88d5859a2c6b43b27e0e46fb281cef8039affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1fb9fb5a4b5cec2d56e26525ef8c519de858fa60affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9f771816f14da6d6157a8c30069091abf6b566fbaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cb2e4a2f8f268d8fba6662f663a2e57846f14a8daffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 62dba28275a9a3104d4e33595c7b3328d4032d8daffected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux5.4.296 <= 5.4.*unaffected
LinuxLinux5.10.240 <= 5.10.*unaffected
LinuxLinux5.15.189 <= 5.15.*unaffected
LinuxLinux6.1.146 <= 6.1.*unaffected
LinuxLinux6.6.99 <= 6.6.*unaffected
LinuxLinux6.12.39 <= 6.12.*unaffected
LinuxLinux6.15.7 <= 6.15.*unaffected
LinuxLinux6.16 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

References