{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50264", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.982Z", "datePublished": "2024-11-19T01:29:59.511Z", "dateUpdated": "2026-08-05T11:42:54.020Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:42:54.020Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: Initialization of the dangling pointer occurring in vsk->trans\n\nDuring loopback communication, a dangling pointer can be created in\nvsk->trans, potentially leading to a Use-After-Free condition. This\nissue is resolved by initializing vsk->trans to NULL." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - vsock is a local socket family (AF_VSOCK) reachable only from the same host; the loopback transport (VSOCKETS_LOOPBACK, default y) operates entirely within the local machine with no network exposure, matching the kernel guidance that vsock = Local.\nAC:L - The attacker fully controls both sides of the race—opening sockets, driving connect()/close() and loopback traffic, and interrupting connect() with signals to trigger transport deassignment while the loopback worker still dereferences the freed vsk->trans; this was demonstrated as a reliable, real-world exploit.\nPR:L - Creating AF_VSOCK sockets and using the loopback transport requires only an unprivileged local account with no capabilities, so basic low privileges suffice.\nUI:N - The attacker's own process performs all operations; no action from any other user is required.\nS:U - The use-after-free corrupts kernel heap memory within the kernel's own security authority, yielding privilege escalation without crossing into another security scope such as a VM/host boundary.\nC:H - The UAF lets the attacker reclaim the freed virtio_vsock_sock object via heap spray and read attacker-influenced kernel memory, providing an arbitrary-read primitive (leveraged for full LPE).\nI:H - Controlling the contents of the reallocated freed object gives a write/control-flow-hijack primitive, enabling arbitrary kernel modification and code execution (demonstrated full LPE).\nA:H - Use-after-free of vsk->trans reliably causes kernel memory corruption, oops, and panic, fully impacting availability." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/vmw_vsock/virtio_transport_common.c" ], "versions": [ { "version": "06a8fc78367d070720af960dcecec917d3ae5f3b", "lessThan": "5f092a4271f6dccf88fe0d132475a17b69ef71df", "status": "affected", "versionType": "git" }, { "version": "06a8fc78367d070720af960dcecec917d3ae5f3b", "lessThan": "fd8ae346692a56b4437d626c5460c7104980f389", "status": "affected", "versionType": "git" }, { "version": "06a8fc78367d070720af960dcecec917d3ae5f3b", "lessThan": "eb1bdcb7dfc30b24495ee4c5533af0ed135cb5f1", "status": "affected", "versionType": "git" }, { "version": "06a8fc78367d070720af960dcecec917d3ae5f3b", "lessThan": "2a6a4e69f255b7aed17f93995691ab4f0d3c2203", "status": "affected", "versionType": "git" }, { "version": "06a8fc78367d070720af960dcecec917d3ae5f3b", "lessThan": "44d29897eafd0e1196453d3003a4d5e0b968eeab", "status": "affected", "versionType": "git" }, { "version": "06a8fc78367d070720af960dcecec917d3ae5f3b", "lessThan": "b110196fec44fe966952004bd426967c2a8fd358", "status": "affected", "versionType": "git" }, { "version": "06a8fc78367d070720af960dcecec917d3ae5f3b", "lessThan": "5f970935d09934222fdef3d0e20c648ea7a963c1", "status": "affected", "versionType": "git" }, { "version": "06a8fc78367d070720af960dcecec917d3ae5f3b", "lessThan": "6ca575374dd9a507cdd16dfa0e78c2e9e20bd05f", "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/vmw_vsock/virtio_transport_common.c" ], "versions": [ { "version": "4.8", "status": "affected" }, { "version": "0", "lessThan": "4.8", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.324", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.286", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.230", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.172", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.117", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.61", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.8", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "4.8", "versionEndExcluding": "4.19.324" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.4.286" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.10.230" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.15.172" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.1.117" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.6.61" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.11.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/5f092a4271f6dccf88fe0d132475a17b69ef71df" }, { "url": "https://git.kernel.org/stable/c/fd8ae346692a56b4437d626c5460c7104980f389" }, { "url": "https://git.kernel.org/stable/c/eb1bdcb7dfc30b24495ee4c5533af0ed135cb5f1" }, { "url": "https://git.kernel.org/stable/c/2a6a4e69f255b7aed17f93995691ab4f0d3c2203" }, { "url": "https://git.kernel.org/stable/c/44d29897eafd0e1196453d3003a4d5e0b968eeab" }, { "url": "https://git.kernel.org/stable/c/b110196fec44fe966952004bd426967c2a8fd358" }, { "url": "https://git.kernel.org/stable/c/5f970935d09934222fdef3d0e20c648ea7a963c1" }, { "url": "https://git.kernel.org/stable/c/6ca575374dd9a507cdd16dfa0e78c2e9e20bd05f" }, { "url": "https://a13xp0p0v.github.io/2025/09/02/kernel-hack-drill-and-CVE-2024-50264.html" } ], "title": "vsock/virtio: Initialization of the dangling pointer occurring in vsk->trans", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-50264", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2024-12-11T14:48:50.387406Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-12-11T14:58:32.111Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:27:43.580Z" } } ] } }