CVE-2026-90079

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90079", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.785Z", "datePublished": "2026-09-17T16:05:57.541Z", "dateUpdated": "2026-10-19T08:57:35.887Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:57:35.887Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix cn20k mailbox lifetime on repeated rvu_mbox_init()\n\nrvu_mbox_init() is called separately for AF-PF mailboxes during probe\nand for AF-VF mailboxes when SR-IOV is enabled. Each call used to\nallocate a new ng_rvu object, leaking the first allocation when the\npointer was overwritten on the second call.\n\nSharing one ng_rvu across both paths exposed several teardown bugs:\nthe error path freed all cn20k mailbox DMA and kfree()d ng_rvu even\nwhen only the failing init type should be unwound, leaving live AF-PF\nmailbox memory in use after an AF-VF init failure. mutex_init() was\nalso re-run on the AF-VF path while AF-PF mailbox handlers could still\nhold rvu->mbox_lock. Probe and SR-IOV failure paths did not release\ncn20k mailbox DMA either, since cleanup only happened in rvu_remove().\n\nAllocate ng_rvu once with devm_kzalloc(), initialize mbox_lock in the\nsame block, unwind only the mailbox memory for the failing init type,\nand free cn20k mailbox DMA from the probe and pci_enable_sriov()\nerror paths."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/cn20k/api.h", "drivers/net/ethernet/marvell/octeontx2/af/cn20k/mbox_init.c", "drivers/net/ethernet/marvell/octeontx2/af/rvu.c"], "versions": [{"version": "e53ee4acb220acab6832669334279367b0206af6", "lessThan": "c08314f91782983d67af0807ed1360e404ac4a8b", "status": "affected", "versionType": "git"}, {"version": "e53ee4acb220acab6832669334279367b0206af6", "lessThan": "a0fcbea79f034f49bdd44915f28938922023458d", "status": "affected", "versionType": "git"}, {"version": "e53ee4acb220acab6832669334279367b0206af6", "lessThan": "3b11a77f69980932c3924054d66e565c9a135747", "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/net/ethernet/marvell/octeontx2/af/cn20k/api.h", "drivers/net/ethernet/marvell/octeontx2/af/cn20k/mbox_init.c", "drivers/net/ethernet/marvell/octeontx2/af/rvu.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.17", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c08314f91782983d67af0807ed1360e404ac4a8b"}, {"url": "https://git.kernel.org/stable/c/a0fcbea79f034f49bdd44915f28938922023458d"}, {"url": "https://git.kernel.org/stable/c/3b11a77f69980932c3924054d66e565c9a135747"}], "title": "octeontx2-af: fix cn20k mailbox lifetime on repeated rvu_mbox_init()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/cn20k/api.h", "drivers/net/ethernet/marvell/octeontx2/af/cn20k/mbox_init.c", "drivers/net/ethernet/marvell/octeontx2/af/rvu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c08314f91782983d67af0807ed1360e404ac4a8b", "status": "affected", "version": "e53ee4acb220acab6832669334279367b0206af6", "versionType": "git"}, {"lessThan": "a0fcbea79f034f49bdd44915f28938922023458d", "status": "affected", "version": "e53ee4acb220acab6832669334279367b0206af6", "versionType": "git"}, {"lessThan": "3b11a77f69980932c3924054d66e565c9a135747", "status": "affected", "version": "e53ee4acb220acab6832669334279367b0206af6", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/cn20k/api.h", "drivers/net/ethernet/marvell/octeontx2/af/cn20k/mbox_init.c", "drivers/net/ethernet/marvell/octeontx2/af/rvu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"lessThan": "6.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.57", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix cn20k mailbox lifetime on repeated rvu_mbox_init()\n\nrvu_mbox_init() is called separately for AF-PF mailboxes during probe\nand for AF-VF mailboxes when SR-IOV is enabled. Each call used to\nallocate a new ng_rvu object, leaking the first allocation when the\npointer was overwritten on the second call.\n\nSharing one ng_rvu across both paths exposed several teardown bugs:\nthe error path freed all cn20k mailbox DMA and kfree()d ng_rvu even\nwhen only the failing init type should be unwound, leaving live AF-PF\nmailbox memory in use after an AF-VF init failure. mutex_init() was\nalso re-run on the AF-VF path while AF-PF mailbox handlers could still\nhold rvu->mbox_lock. Probe and SR-IOV failure paths did not release\ncn20k mailbox DMA either, since cleanup only happened in rvu_remove().\n\nAllocate ng_rvu once with devm_kzalloc(), initialize mbox_lock in the\nsame block, unwind only the mailbox memory for the failing init type,\nand free cn20k mailbox DMA from the probe and pci_enable_sriov()\nerror paths."}], "id": "CVE-2026-90079", "lastModified": "2026-10-19T09:18:56.767", "metrics": {}, "published": "2026-09-17T17:16:57.210", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3b11a77f69980932c3924054d66e565c9a135747"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a0fcbea79f034f49bdd44915f28938922023458d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c08314f91782983d67af0807ed1360e404ac4a8b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e53ee4acb220acab6832669334279367b0206af6,a0fcbea79f034f49bdd44915f28938922023458d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e53ee4acb220acab6832669334279367b0206af6,3b11a77f69980932c3924054d66e565c9a135747)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-18T15:45:09.962576+00:00", "updated": "2026-09-20T04:00:09.686221+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-401", "CWE-416"]}