{"api_version":"1","generated_at":"2026-07-24T20:03:28+00:00","cve":"CVE-2026-64222","urls":{"html":"https://cve.report/CVE-2026-64222","api":"https://cve.report/api/cve/CVE-2026-64222.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64222","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64222"},"summary":{"title":"octeontx2-pf: avoid double free of pool->stack on AQ init failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: avoid double free of pool->stack on AQ init failure\n\notx2_pool_aq_init() frees pool->stack when mailbox sync or retry\nallocation fails, but leaves the pointer unchanged. Later,\notx2_sq_aura_pool_init() unwinds the partial setup through\notx2_aura_pool_free(), which frees pool->stack again. The CN20K-specific\ncn20k_pool_aq_init() implementation has the same bug in\nits corresponding error path.\n\nSet pool->stack to NULL immediately after the local free so the shared\ncleanup path does not free the same stack again while cleaning up\npartially initialized pool state.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still present in\nv7.1-rc3.\n\nRuntime validation was not performed because reproducing this path\nrequires OcteonTX2/CN20K hardware.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-24 16:16:50","updated_at":"2026-07-24 16:16:50"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/0488a0bb344fb1992853b60082acff6be8164d74","name":"https://git.kernel.org/stable/c/0488a0bb344fb1992853b60082acff6be8164d74","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4c29603498b05c049dbbbc47e882f2fbf0193cd7","name":"https://git.kernel.org/stable/c/4c29603498b05c049dbbbc47e882f2fbf0193cd7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c4b8c5d51632538b19ee01cf6d70cbceeefbd3ec","name":"https://git.kernel.org/stable/c/c4b8c5d51632538b19ee01cf6d70cbceeefbd3ec","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9b244c242bec48b37e82b89787afd6a4c43457e1","name":"https://git.kernel.org/stable/c/9b244c242bec48b37e82b89787afd6a4c43457e1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/94192b0579333c3deee2441379aab8ca98fc2e6b","name":"https://git.kernel.org/stable/c/94192b0579333c3deee2441379aab8ca98fc2e6b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b92e7ea408b6f1144648909c9c49a55d245d7300","name":"https://git.kernel.org/stable/c/b92e7ea408b6f1144648909c9c49a55d245d7300","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e6e9bc0bf963662b7042048ab0281014625d4cb4","name":"https://git.kernel.org/stable/c/e6e9bc0bf963662b7042048ab0281014625d4cb4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0d9b9d7dbef976ae7f855b6358f1d703014e96ea","name":"https://git.kernel.org/stable/c/0d9b9d7dbef976ae7f855b6358f1d703014e96ea","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64222","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64222","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected caa2da34fd25a37e9fd43343b6966fb9d730a6d5 e6e9bc0bf963662b7042048ab0281014625d4cb4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected caa2da34fd25a37e9fd43343b6966fb9d730a6d5 b92e7ea408b6f1144648909c9c49a55d245d7300 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected caa2da34fd25a37e9fd43343b6966fb9d730a6d5 94192b0579333c3deee2441379aab8ca98fc2e6b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected caa2da34fd25a37e9fd43343b6966fb9d730a6d5 4c29603498b05c049dbbbc47e882f2fbf0193cd7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.210 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.176 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.143 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.93 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.35 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/marvell/octeontx2/nic/cn20k.c","drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e6e9bc0bf963662b7042048ab0281014625d4cb4","status":"affected","version":"caa2da34fd25a37e9fd43343b6966fb9d730a6d5","versionType":"git"},{"lessThan":"b92e7ea408b6f1144648909c9c49a55d245d7300","status":"affected","version":"caa2da34fd25a37e9fd43343b6966fb9d730a6d5","versionType":"git"},{"lessThan":"94192b0579333c3deee2441379aab8ca98fc2e6b","status":"affected","version":"caa2da34fd25a37e9fd43343b6966fb9d730a6d5","versionType":"git"},{"lessThan":"4c29603498b05c049dbbbc47e882f2fbf0193cd7","status":"affected","version":"caa2da34fd25a37e9fd43343b6966fb9d730a6d5","versionType":"git"},{"lessThan":"0488a0bb344fb1992853b60082acff6be8164d74","status":"affected","version":"caa2da34fd25a37e9fd43343b6966fb9d730a6d5","versionType":"git"},{"lessThan":"0d9b9d7dbef976ae7f855b6358f1d703014e96ea","status":"affected","version":"caa2da34fd25a37e9fd43343b6966fb9d730a6d5","versionType":"git"},{"lessThan":"c4b8c5d51632538b19ee01cf6d70cbceeefbd3ec","status":"affected","version":"caa2da34fd25a37e9fd43343b6966fb9d730a6d5","versionType":"git"},{"lessThan":"9b244c242bec48b37e82b89787afd6a4c43457e1","status":"affected","version":"caa2da34fd25a37e9fd43343b6966fb9d730a6d5","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/marvell/octeontx2/nic/cn20k.c","drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.6"},{"lessThan":"5.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.35","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.259","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.210","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.176","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.143","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.93","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.35","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"5.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: avoid double free of pool->stack on AQ init failure\n\notx2_pool_aq_init() frees pool->stack when mailbox sync or retry\nallocation fails, but leaves the pointer unchanged. Later,\notx2_sq_aura_pool_init() unwinds the partial setup through\notx2_aura_pool_free(), which frees pool->stack again. The CN20K-specific\ncn20k_pool_aq_init() implementation has the same bug in\nits corresponding error path.\n\nSet pool->stack to NULL immediately after the local free so the shared\ncleanup path does not free the same stack again while cleaning up\npartially initialized pool state.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still present in\nv7.1-rc3.\n\nRuntime validation was not performed because reproducing this path\nrequires OcteonTX2/CN20K hardware."}],"providerMetadata":{"dateUpdated":"2026-07-24T15:23:08.072Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e6e9bc0bf963662b7042048ab0281014625d4cb4"},{"url":"https://git.kernel.org/stable/c/b92e7ea408b6f1144648909c9c49a55d245d7300"},{"url":"https://git.kernel.org/stable/c/94192b0579333c3deee2441379aab8ca98fc2e6b"},{"url":"https://git.kernel.org/stable/c/4c29603498b05c049dbbbc47e882f2fbf0193cd7"},{"url":"https://git.kernel.org/stable/c/0488a0bb344fb1992853b60082acff6be8164d74"},{"url":"https://git.kernel.org/stable/c/0d9b9d7dbef976ae7f855b6358f1d703014e96ea"},{"url":"https://git.kernel.org/stable/c/c4b8c5d51632538b19ee01cf6d70cbceeefbd3ec"},{"url":"https://git.kernel.org/stable/c/9b244c242bec48b37e82b89787afd6a4c43457e1"}],"title":"octeontx2-pf: avoid double free of pool->stack on AQ init failure","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64222","datePublished":"2026-07-24T15:23:08.072Z","dateReserved":"2026-07-19T15:36:31.770Z","dateUpdated":"2026-07-24T15:23:08.072Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-24 16:16:50","lastModifiedDate":"2026-07-24 16:16:50","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64222","Ordinal":"1","Title":"octeontx2-pf: avoid double free of pool->stack on AQ init failur","CVE":"CVE-2026-64222","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64222","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: avoid double free of pool->stack on AQ init failure\n\notx2_pool_aq_init() frees pool->stack when mailbox sync or retry\nallocation fails, but leaves the pointer unchanged. Later,\notx2_sq_aura_pool_init() unwinds the partial setup through\notx2_aura_pool_free(), which frees pool->stack again. The CN20K-specific\ncn20k_pool_aq_init() implementation has the same bug in\nits corresponding error path.\n\nSet pool->stack to NULL immediately after the local free so the shared\ncleanup path does not free the same stack again while cleaning up\npartially initialized pool state.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still present in\nv7.1-rc3.\n\nRuntime validation was not performed because reproducing this path\nrequires OcteonTX2/CN20K hardware.","Type":"Description","Title":"octeontx2-pf: avoid double free of pool->stack on AQ init failur"}]}}}