{"id":"CVE-2025-38546","title":"atm: clip: Fix memory leak of struct clip_vcc.","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\natm: clip: Fix memory leak of struct clip_vcc.\n\nioctl(ATMARP_MKIP) allocates struct clip_vcc and set it to\nvcc->user_back.\n\nThe code assumes that vcc_destroy_socket() p…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2fb37ab3226606cbfc9b2b6f9e301b0b735734c5","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9e4dbeee56f614e3f1e166e5d0655a999ea185ef","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1c075e88d5859a2c6b43b27e0e46fb281cef8039","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1fb9fb5a4b5cec2d56e26525ef8c519de858fa60","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9f771816f14da6d6157a8c30069091abf6b566fb","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cb2e4a2f8f268d8fba6662f663a2e57846f14a8d","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 62dba28275a9a3104d4e33595c7b3328d4032d8d","Linux 2.6.12"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T21:03:45.586611Z"},"published":"2025-08-16","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:12:46.672Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38546","references":[{"url":"https://git.kernel.org/stable/c/2fb37ab3226606cbfc9b2b6f9e301b0b735734c5"},{"url":"https://git.kernel.org/stable/c/9e4dbeee56f614e3f1e166e5d0655a999ea185ef"},{"url":"https://git.kernel.org/stable/c/1c075e88d5859a2c6b43b27e0e46fb281cef8039"},{"url":"https://git.kernel.org/stable/c/0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90"},{"url":"https://git.kernel.org/stable/c/1fb9fb5a4b5cec2d56e26525ef8c519de858fa60"},{"url":"https://git.kernel.org/stable/c/9f771816f14da6d6157a8c30069091abf6b566fb"},{"url":"https://git.kernel.org/stable/c/cb2e4a2f8f268d8fba6662f663a2e57846f14a8d"},{"url":"https://git.kernel.org/stable/c/62dba28275a9a3104d4e33595c7b3328d4032d8d"}],"tags":["cve.org"],"epss":0.00181,"epssPercentile":0.07677,"ingestedAt":"2026-11-05T22:38:31.991Z","slug":"CVE-2025-38546","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\natm: clip: Fix memory leak of struct clip_vcc.\n\nioctl(ATMARP_MKIP) allocates struct clip_vcc and set it to\nvcc->user_back.\n\nThe code assumes that vcc_destroy_socket() passes NULL skb\nto vcc->push() when the socket is close()d, and then clip_push()\nfrees clip_vcc.\n\nHowever, ioctl(ATMARPD_CTRL) sets NULL to vcc->push() in\natm_init_atmarp(), resulting in memory leak.\n\nLet's serialise two ioctl() by lock_sock() and check vcc->push()\nin atm_init_atmarp() to prevent memleak.\n\n## Affected\n\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2fb37ab3226606cbfc9b2b6f9e301b0b735734c5`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9e4dbeee56f614e3f1e166e5d0655a999ea185ef`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1c075e88d5859a2c6b43b27e0e46fb281cef8039`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1fb9fb5a4b5cec2d56e26525ef8c519de858fa60`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9f771816f14da6d6157a8c30069091abf6b566fb`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cb2e4a2f8f268d8fba6662f663a2e57846f14a8d`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 62dba28275a9a3104d4e33595c7b3328d4032d8d`\n- `Linux 2.6.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}