{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63919", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.020Z", "datePublished": "2026-07-19T14:55:22.121Z", "dateUpdated": "2026-07-20T13:41:29.060Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-20T13:41:29.060Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: input: hold netns during deferred transport reinjection\n\nTransport-mode reinjection stores a struct net pointer in skb->cb and\nuses it later from xfrm_trans_reinject(). That pointer must stay valid\nuntil the deferred callback runs.\n\nTake a netns reference when queueing deferred reinjection work and drop\nit after the callback completes. Use maybe_get_net() so the queueing\npath does not revive a namespace that is already being torn down.\n\nThis keeps the existing workqueue design and fixes the netns lifetime\nhandling in one place for all users of xfrm_trans_queue_net()."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/xfrm/xfrm_input.c"], "versions": [{"version": "7b3801927e52f8621de311277f7fc727635019e7", "lessThan": "7ee59eda8820b758ed29e1cd3222359c7b97302c", "status": "affected", "versionType": "git"}, {"version": "7b3801927e52f8621de311277f7fc727635019e7", "lessThan": "2df7059a18afb7d3aee6c36cad5d371c198111d4", "status": "affected", "versionType": "git"}, {"version": "7b3801927e52f8621de311277f7fc727635019e7", "lessThan": "8dfabcba6a943a7a02ebe1e1637c361ba96acbaa", "status": "affected", "versionType": "git"}, {"version": "7b3801927e52f8621de311277f7fc727635019e7", "lessThan": "48ce101cd630d6745b6923b5bad8358bc4c119da", "status": "affected", "versionType": "git"}, {"version": "7b3801927e52f8621de311277f7fc727635019e7", "lessThan": "55ddfc41451f01c588089cd74957a05311b6f202", "status": "affected", "versionType": "git"}, {"version": "7b3801927e52f8621de311277f7fc727635019e7", "lessThan": "9f7ebb45a83afc3216e855e57d51bb4bc9b5232e", "status": "affected", "versionType": "git"}, {"version": "7b3801927e52f8621de311277f7fc727635019e7", "lessThan": "9f67a36e91bb50d358760f381f233913fe5c09f8", "status": "affected", "versionType": "git"}, {"version": "7b3801927e52f8621de311277f7fc727635019e7", "lessThan": "c16f74dc1d75d0e2e7670076d5375deda110ebeb", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/xfrm/xfrm_input.c"], "versions": [{"version": "5.6", "status": "affected"}, {"version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.259", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.210", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.93", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "5.6", "versionEndExcluding": "5.10.259"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.15.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7ee59eda8820b758ed29e1cd3222359c7b97302c"}, {"url": "https://git.kernel.org/stable/c/2df7059a18afb7d3aee6c36cad5d371c198111d4"}, {"url": "https://git.kernel.org/stable/c/8dfabcba6a943a7a02ebe1e1637c361ba96acbaa"}, {"url": "https://git.kernel.org/stable/c/48ce101cd630d6745b6923b5bad8358bc4c119da"}, {"url": "https://git.kernel.org/stable/c/55ddfc41451f01c588089cd74957a05311b6f202"}, {"url": "https://git.kernel.org/stable/c/9f7ebb45a83afc3216e855e57d51bb4bc9b5232e"}, {"url": "https://git.kernel.org/stable/c/9f67a36e91bb50d358760f381f233913fe5c09f8"}, {"url": "https://git.kernel.org/stable/c/c16f74dc1d75d0e2e7670076d5375deda110ebeb"}], "title": "xfrm: input: hold netns during deferred transport reinjection", "x_generator": {"engine": "bippy-1.2.0"}}}}

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