{"id":"CVE-2026-23463","revision":null,"records":[{"revision":"3c20ed44c6654e25914e82d7c5e571e9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-23463","aliases":[],"title":"soc: fsl: qbman: fix race condition in qman_destroy_fq","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsoc: fsl: qbman: fix race condition in qman_destroy_fq\n\nWhen QMAN_FQ_FLAG_DYNAMIC_FQID is set, there's a race condition between\nfq_table[fq->idx] state and freeing/allocating from the pool and\nWARN_ON(fq_table[fq->idx]) in qman_create_fq() gets triggered.\n\nIndeed, we can have:\n Thread A Thread B\n qman_destroy_fq() qman_create_fq()\n qman_release_fqid()\n qman_shutdown_fq()\n gen_pool_free()\n -- At this point, the fqid is available again --\n qman_alloc_fqid()\n -- so, we can get the just-freed fqid in thread B --\n fq->fqid = fqid;\n fq->idx = fqid * 2;\n WARN_ON(fq_table[fq->idx]);\n fq_table[fq->idx] = fq;\n fq_table[fq->idx] = NULL;\n\nAnd adding some logs between qman_release_fqid() and\nfq_table[fq->idx] = NULL makes the WARN_ON() trigger a lot more.\n\nTo prevent that, ensure that fq_table[fq->idx] is set to NULL before\ngen_pool_free() is called by using smp_wmb().","state":0,"publishedAt":"2026-04-03T15:15:42.411+00:00","modifiedAt":"2026-10-15T01:15:23.918+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 \"drivers/soc/fsl/qbman/qman.c\"\n ],\n \"versions\": [\n {\n \"version\": \"c535e923bb97a4b361e89a6383693482057f8b0c\",\n \"lessThan\": \"66442cf9989bd4489fa80d9f37637d58ab016835\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c535e923bb97a4b361e89a6383693482057f8b0c\",\n \"lessThan\": \"d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c535e923bb97a4b361e89a6383693482057f8b0c\",\n \"lessThan\": \"9e3d47904b8153c8c3ad2f9b66d5008aad677aa8\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c535e923bb97a4b361e89a6383693482057f8b0c\",\n \"lessThan\": \"d21923a8059fa896bfef016f55dd769299335cb4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c535e923bb97a4b361e89a6383693482057f8b0c\",\n \"lessThan\": \"751f60bd48edaf03f9d84ab09e5ce6705757d50f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c535e923bb97a4b361e89a6383693482057f8b0c\",\n \"lessThan\": \"85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c535e923bb97a4b361e89a6383693482057f8b0c\",\n \"lessThan\": \"265e56714635c5dd1e5964bfd97fa6e73f62cde5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c535e923bb97a4b361e89a6383693482057f8b0c\",\n \"lessThan\": \"014077044e874e270ec480515edbc1cadb976cf2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\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 \"drivers/soc/fsl/qbman/qman.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.9\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.9\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.253\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.203\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.167\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.130\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.78\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.20\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.19.10\",\n \"lessThanOrEqual\": \"6.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/66442cf9989bd4489fa80d9f37637d58ab016835","https://git.kernel.org/stable/c/d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210","https://git.kernel.org/stable/c/9e3d47904b8153c8c3ad2f9b66d5008aad677aa8","https://git.kernel.org/stable/c/d21923a8059fa896bfef016f55dd769299335cb4","https://git.kernel.org/stable/c/751f60bd48edaf03f9d84ab09e5ce6705757d50f","https://git.kernel.org/stable/c/85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa","https://git.kernel.org/stable/c/265e56714635c5dd1e5964bfd97fa6e73f62cde5","https://git.kernel.org/stable/c/014077044e874e270ec480515edbc1cadb976cf2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23463","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-23463","identifiers":["CVE-2026-23463"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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