{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72463", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.933Z", "datePublished": "2026-08-15T05:57:07.413Z", "dateUpdated": "2026-08-15T05:57:07.413Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-15T05:57:07.413Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: Fix dev use-after-free in xfrm async resumption\n\nxfrm async resumption hold skb->dev refcnt until after transport_finish.\nHowever, xfrm_rcv_cb may modify skb->dev to tunnel dev without taking\ndevice reference, such as vti_rcv_cb. The subsequent async resumption\nwill decrement the tunnel device's reference count, which lead to uaf\nof tunnel dev and refcnt leak of orig dev as below:\n\nunregister_netdevice: waiting for vti1 to become free. Usage count = -2\n\nStash the original skb->dev to fix refcnt imbalance. The new skb->dev set\nby xfrm_rcv_cb can race with device teardown. Extend rcu protection over\nxfrm_rcv_cb and transport_finish to prevent races."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv4/xfrm4_input.c", "net/ipv6/xfrm6_input.c", "net/xfrm/xfrm_input.c"], "versions": [{"version": "1c428b03840094410c5fb6a5db30640486bbbfcb", "lessThan": "63a30015199912bd5055bead8001b1ae68a67cdb", "status": "affected", "versionType": "git"}, {"version": "1c428b03840094410c5fb6a5db30640486bbbfcb", "lessThan": "8045c0df98d4f14c54e5cb875f1c9c0ce89fe4ff", "status": "affected", "versionType": "git"}, {"version": "4236c30b437b80f673b9e08c8fae38b8d471ac9e", "status": "affected", "versionType": "git"}, {"version": "0f451b43c88bf2b9c038b414be580efee42e031b", "status": "affected", "versionType": "git"}, {"version": "5002beda5cac69d522dc54da0d5d463ed9c963d2", "status": "affected", "versionType": "git"}, {"version": "6.12.94", "lessThan": "6.13", "status": "affected", "versionType": "semver"}, {"version": "6.18.23", "lessThan": "6.19", "status": "affected", "versionType": "semver"}, {"version": "6.19.13", "lessThan": "6.20", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv4/xfrm4_input.c", "net/ipv6/xfrm6_input.c", "net/xfrm/xfrm_input.c"], "versions": [{"version": "7.0", "status": "affected"}, {"version": "0", "lessThan": "7.0", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "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": "7.0", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.2-rc1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.23"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/63a30015199912bd5055bead8001b1ae68a67cdb"}, {"url": "https://git.kernel.org/stable/c/8045c0df98d4f14c54e5cb875f1c9c0ce89fe4ff"}], "title": "xfrm: Fix dev use-after-free in xfrm async resumption", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/ipv4/xfrm4_input.c", "net/ipv6/xfrm6_input.c", "net/xfrm/xfrm_input.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "63a30015199912bd5055bead8001b1ae68a67cdb", "status": "affected", "version": "1c428b03840094410c5fb6a5db30640486bbbfcb", "versionType": "git"}, {"lessThan": "8045c0df98d4f14c54e5cb875f1c9c0ce89fe4ff", "status": "affected", "version": "1c428b03840094410c5fb6a5db30640486bbbfcb", "versionType": "git"}, {"status": "affected", "version": "4236c30b437b80f673b9e08c8fae38b8d471ac9e", "versionType": "git"}, {"status": "affected", "version": "0f451b43c88bf2b9c038b414be580efee42e031b", "versionType": "git"}, {"status": "affected", "version": "5002beda5cac69d522dc54da0d5d463ed9c963d2", "versionType": "git"}, {"lessThan": "6.13", "status": "affected", "version": "6.12.94", "versionType": "semver"}, {"lessThan": "6.19", "status": "affected", "version": "6.18.23", "versionType": "semver"}, {"lessThan": "6.20", "status": "affected", "version": "6.19.13", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/ipv4/xfrm4_input.c", "net/ipv6/xfrm6_input.c", "net/xfrm/xfrm_input.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.0"}, {"lessThan": "7.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc1", "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\nxfrm: Fix dev use-after-free in xfrm async resumption\n\nxfrm async resumption hold skb->dev refcnt until after transport_finish.\nHowever, xfrm_rcv_cb may modify skb->dev to tunnel dev without taking\ndevice reference, such as vti_rcv_cb. The subsequent async resumption\nwill decrement the tunnel device's reference count, which lead to uaf\nof tunnel dev and refcnt leak of orig dev as below:\n\nunregister_netdevice: waiting for vti1 to become free. Usage count = -2\n\nStash the original skb->dev to fix refcnt imbalance. The new skb->dev set\nby xfrm_rcv_cb can race with device teardown. Extend rcu protection over\nxfrm_rcv_cb and transport_finish to prevent races."}], "id": "CVE-2026-72463", "lastModified": "2026-08-15T06:22:20.303", "metrics": {}, "published": "2026-08-15T06:22:20.303", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/63a30015199912bd5055bead8001b1ae68a67cdb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8045c0df98d4f14c54e5cb875f1c9c0ce89fe4ff"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}