{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23463", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:46.021Z", "datePublished": "2026-04-03T15:15:42.411Z", "dateUpdated": "2026-04-03T15:15:42.411Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-03T15:15:42.411Z"}, "descriptions": [{"lang": "en", "value": "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()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/soc/fsl/qbman/qman.c"], "versions": [{"version": "c535e923bb97a4b361e89a6383693482057f8b0c", "lessThan": "9e3d47904b8153c8c3ad2f9b66d5008aad677aa8", "status": "affected", "versionType": "git"}, {"version": "c535e923bb97a4b361e89a6383693482057f8b0c", "lessThan": "d21923a8059fa896bfef016f55dd769299335cb4", "status": "affected", "versionType": "git"}, {"version": "c535e923bb97a4b361e89a6383693482057f8b0c", "lessThan": "751f60bd48edaf03f9d84ab09e5ce6705757d50f", "status": "affected", "versionType": "git"}, {"version": "c535e923bb97a4b361e89a6383693482057f8b0c", "lessThan": "85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa", "status": "affected", "versionType": "git"}, {"version": "c535e923bb97a4b361e89a6383693482057f8b0c", "lessThan": "265e56714635c5dd1e5964bfd97fa6e73f62cde5", "status": "affected", "versionType": "git"}, {"version": "c535e923bb97a4b361e89a6383693482057f8b0c", "lessThan": "014077044e874e270ec480515edbc1cadb976cf2", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/soc/fsl/qbman/qman.c"], "versions": [{"version": "4.9", "status": "affected"}, {"version": "0", "lessThan": "4.9", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.78", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.20", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.10", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0-rc5", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.12.78"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.18.20"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "6.19.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9", "versionEndExcluding": "7.0-rc5"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9e3d47904b8153c8c3ad2f9b66d5008aad677aa8"}, {"url": "https://git.kernel.org/stable/c/d21923a8059fa896bfef016f55dd769299335cb4"}, {"url": "https://git.kernel.org/stable/c/751f60bd48edaf03f9d84ab09e5ce6705757d50f"}, {"url": "https://git.kernel.org/stable/c/85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa"}, {"url": "https://git.kernel.org/stable/c/265e56714635c5dd1e5964bfd97fa6e73f62cde5"}, {"url": "https://git.kernel.org/stable/c/014077044e874e270ec480515edbc1cadb976cf2"}], "title": "soc: fsl: qbman: fix race condition in qman_destroy_fq", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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()."}], "id": "CVE-2026-23463", "lastModified": "2026-04-03T16:16:33.520", "metrics": {}, "published": "2026-04-03T16:16:33.520", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/014077044e874e270ec480515edbc1cadb976cf2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/265e56714635c5dd1e5964bfd97fa6e73f62cde5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/751f60bd48edaf03f9d84ab09e5ce6705757d50f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9e3d47904b8153c8c3ad2f9b66d5008aad677aa8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d21923a8059fa896bfef016f55dd769299335cb4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}