{"api_version":"1","generated_at":"2026-04-19T01:15:03+00:00","cve":"CVE-2026-23463","urls":{"html":"https://cve.report/CVE-2026-23463","api":"https://cve.report/api/cve/CVE-2026-23463.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23463","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23463"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-04-03 16:16:33","updated_at":"2026-04-18 09:16:29"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/751f60bd48edaf03f9d84ab09e5ce6705757d50f","name":"https://git.kernel.org/stable/c/751f60bd48edaf03f9d84ab09e5ce6705757d50f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/66442cf9989bd4489fa80d9f37637d58ab016835","name":"https://git.kernel.org/stable/c/66442cf9989bd4489fa80d9f37637d58ab016835","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9e3d47904b8153c8c3ad2f9b66d5008aad677aa8","name":"https://git.kernel.org/stable/c/9e3d47904b8153c8c3ad2f9b66d5008aad677aa8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/014077044e874e270ec480515edbc1cadb976cf2","name":"https://git.kernel.org/stable/c/014077044e874e270ec480515edbc1cadb976cf2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa","name":"https://git.kernel.org/stable/c/85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/265e56714635c5dd1e5964bfd97fa6e73f62cde5","name":"https://git.kernel.org/stable/c/265e56714635c5dd1e5964bfd97fa6e73f62cde5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210","name":"https://git.kernel.org/stable/c/d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d21923a8059fa896bfef016f55dd769299335cb4","name":"https://git.kernel.org/stable/c/d21923a8059fa896bfef016f55dd769299335cb4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-23463","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23463","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c535e923bb97a4b361e89a6383693482057f8b0c 66442cf9989bd4489fa80d9f37637d58ab016835 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c535e923bb97a4b361e89a6383693482057f8b0c d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c535e923bb97a4b361e89a6383693482057f8b0c 9e3d47904b8153c8c3ad2f9b66d5008aad677aa8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c535e923bb97a4b361e89a6383693482057f8b0c d21923a8059fa896bfef016f55dd769299335cb4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.203 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.167 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.130 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.78 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.20 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.10 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"23463","cve":"CVE-2026-23463","epss":"0.000320000","percentile":"0.090980000","score_date":"2026-04-18","updated_at":"2026-04-19 00:10:43"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/soc/fsl/qbman/qman.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"66442cf9989bd4489fa80d9f37637d58ab016835","status":"affected","version":"c535e923bb97a4b361e89a6383693482057f8b0c","versionType":"git"},{"lessThan":"d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210","status":"affected","version":"c535e923bb97a4b361e89a6383693482057f8b0c","versionType":"git"},{"lessThan":"9e3d47904b8153c8c3ad2f9b66d5008aad677aa8","status":"affected","version":"c535e923bb97a4b361e89a6383693482057f8b0c","versionType":"git"},{"lessThan":"d21923a8059fa896bfef016f55dd769299335cb4","status":"affected","version":"c535e923bb97a4b361e89a6383693482057f8b0c","versionType":"git"},{"lessThan":"751f60bd48edaf03f9d84ab09e5ce6705757d50f","status":"affected","version":"c535e923bb97a4b361e89a6383693482057f8b0c","versionType":"git"},{"lessThan":"85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa","status":"affected","version":"c535e923bb97a4b361e89a6383693482057f8b0c","versionType":"git"},{"lessThan":"265e56714635c5dd1e5964bfd97fa6e73f62cde5","status":"affected","version":"c535e923bb97a4b361e89a6383693482057f8b0c","versionType":"git"},{"lessThan":"014077044e874e270ec480515edbc1cadb976cf2","status":"affected","version":"c535e923bb97a4b361e89a6383693482057f8b0c","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/soc/fsl/qbman/qman.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.9"},{"lessThan":"4.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.130","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.78","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.253","versionStartIncluding":"4.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.203","versionStartIncluding":"4.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.167","versionStartIncluding":"4.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.130","versionStartIncluding":"4.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.78","versionStartIncluding":"4.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.20","versionStartIncluding":"4.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.10","versionStartIncluding":"4.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"4.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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()."}],"providerMetadata":{"dateUpdated":"2026-04-18T08:59:12.252Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/66442cf9989bd4489fa80d9f37637d58ab016835"},{"url":"https://git.kernel.org/stable/c/d288fbe652ef43b7128e4bc0c0c2ef6bd03a2210"},{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-23463","datePublished":"2026-04-03T15:15:42.411Z","dateReserved":"2026-01-13T15:37:46.021Z","dateUpdated":"2026-04-18T08:59:12.252Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-03 16:16:33","lastModifiedDate":"2026-04-18 09:16:29","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"23463","Ordinal":"1","Title":"soc: fsl: qbman: fix race condition in qman_destroy_fq","CVE":"CVE-2026-23463","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23463","Ordinal":"1","NoteData":"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().","Type":"Description","Title":"soc: fsl: qbman: fix race condition in qman_destroy_fq"}]}}}