{"id":"CVE-2025-38107","revision":"9cbf5b59918444d6b033a1fc1411b7c7","records":[{"revision":"9cbf5b59918444d6b033a1fc1411b7c7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-38107","aliases":[],"title":"net_sched: ets: fix a race in ets_qdisc_change()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: ets: fix a race in ets_qdisc_change()\n\nGerrard Tai reported a race condition in ETS, whenever SFQ perturb timer\nfires at the wrong time.\n\nThe race is as follows:\n\nCPU 0                                 CPU 1\n[1]: lock root\n[2]: qdisc_tree_flush_backlog()\n[3]: unlock root\n |\n |                                    [5]: lock root\n |                                    [6]: rehash\n |                                    [7]: qdisc_tree_reduce_backlog()\n |\n[4]: qdisc_put()\n\nThis can be abused to underflow a parent's qlen.\n\nCalling qdisc_purge_queue() instead of qdisc_tree_flush_backlog()\nshould fix the race, because all packets will be purged from the qdisc\nbefore releasing the lock.","state":0,"publishedAt":"2025-07-03T08:35:17.487+00:00","modifiedAt":"2026-10-15T21:52:08.363+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/sched/sch_ets.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"699d82e9a6db29d509a71f1f2f4316231e6232e6\",\n                            \"lessThan\": \"eb7b74e9754e1ba2088f914ad1f57a778b11894b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ce881ddbdc028fb1988b66e40e45ca0529c23b46\",\n                            \"lessThan\": \"0b479d0aa488cb478eb2e1d8868be946ac8afb4f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b05972f01e7d30419987a1f221b5593668fd6448\",\n                            \"lessThan\": \"347867cb424edae5fec1622712c8dd0a2c42918f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b05972f01e7d30419987a1f221b5593668fd6448\",\n                            \"lessThan\": \"0383b25488a545be168744336847549d4a2d3d6c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b05972f01e7d30419987a1f221b5593668fd6448\",\n                            \"lessThan\": \"073f64c03516bcfaf790f8edc772e0cfb8a84ec3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b05972f01e7d30419987a1f221b5593668fd6448\",\n                            \"lessThan\": \"fed94bd51d62d2e0e006aa61480e94e5cd0582b0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b05972f01e7d30419987a1f221b5593668fd6448\",\n                            \"lessThan\": \"d92adacdd8c2960be856e0b82acc5b7c5395fddb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fffa19b5e58c34004a0d6f642d9c24b11d213994\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fb155f6597cd7bc3aeed668c3bb15fc3b7cb257d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.10.142\",\n                            \"lessThan\": \"5.10.239\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.66\",\n                            \"lessThan\": \"5.15.186\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.213\",\n                            \"lessThan\": \"5.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.19.8\",\n                            \"lessThan\": \"5.20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/sched/sch_ets.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.239\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.186\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.142\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.94\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.34\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.15.3\",\n                            \"lessThanOrEqual\": \"6.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.16\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/eb7b74e9754e1ba2088f914ad1f57a778b11894b","https://git.kernel.org/stable/c/0b479d0aa488cb478eb2e1d8868be946ac8afb4f","https://git.kernel.org/stable/c/347867cb424edae5fec1622712c8dd0a2c42918f","https://git.kernel.org/stable/c/0383b25488a545be168744336847549d4a2d3d6c","https://git.kernel.org/stable/c/073f64c03516bcfaf790f8edc772e0cfb8a84ec3","https://git.kernel.org/stable/c/fed94bd51d62d2e0e006aa61480e94e5cd0582b0","https://git.kernel.org/stable/c/d92adacdd8c2960be856e0b82acc5b7c5395fddb"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38107","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-38107","identifiers":["CVE-2025-38107"]},"retained":false,"historicalAffected":[]}],"coverage":[]}