{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-53103", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-11-19T17:17:24.984Z", "datePublished": "2024-12-02T07:29:26.450Z", "dateUpdated": "2026-08-05T11:43:43.359Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:43:43.359Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer\n\nWhen hvs is released, there is a possibility that vsk->trans may not\nbe initialized to NULL, which could lead to a dangling pointer.\nThis issue 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 - The vulnerable code is reached through the AF_VSOCK socket API (`socket()`/`connect()`) from a local process in the guest; there is no path that lets a remote or adjacent peer drive the transport reassignment. Per kernel scoring convention vsock bugs are Local.\nAC:L - The attacker fully controls the trigger sequence — `connect()` to VMADDR_CID_HOST to get the hv_sock transport, self-delivered signal (alarm/timer) to force the `SS_UNCONNECTED`/`TCP_CLOSING` state at af_vsock.c:1524, then `connect()` to VMADDR_CID_LOCAL to force `hvs_destruct()` — and can retry the sequence indefinitely with cheap, attacker-controlled heap grooming.\nPR:L - `vsock_create()` performs no capability check, so any unprivileged local user can create AF_VSOCK sockets and drive `vsock_connect()`; the required hv_sock and vsock_loopback modules are autoloaded by that unprivileged `socket()` call via MODULE_ALIAS_NETPROTO(PF_VSOCK).\nUI:N - The entire sequence is performed by the attacker's own process through ordinary syscalls; no action by any other user or administrator is needed.\nS:U - The dangling `struct hvsock` and the corrupted kernel heap are within the guest kernel's own security authority; hv_sock is the guest-side transport, so there is no crossing into the Hyper-V host or another VM.\nC:H - A dangling `vsk->trans` gives a use-after-free on a kmalloc'd `struct hvsock`; reclaiming that slot with attacker-chosen data and having `hvs_stream_dequeue()`/`hvs_update_recv_data()` read through the stale `recv_desc`/`recv_data_off`/`recv_data_len` fields yields controlled kernel memory disclosure into userspace.\nI:H - The same UAF is a write primitive — `hvs_open_connection()` does `hvs->chan = chan` and `hvs_update_recv_data()` writes `recv_data_len`/`recv_data_off` into the freed object, so heap spraying over the reclaimed slot allows corruption of an adjacent/overlapping kernel object and control-flow hijacking.\nA:H - Even without successful exploitation the stale pointer causes dereference of freed memory (or a NULL `vsk->transport` deref from `hvs_close_timeout` → `vsock_stream_has_data()`), producing a kernel oops/panic that an unprivileged user can trigger repeatedly." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/vmw_vsock/hyperv_transport.c" ], "versions": [ { "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9", "lessThan": "285266ef92f7b4bf7d26e1e95e215ce6a6badb4a", "status": "affected", "versionType": "git" }, { "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9", "lessThan": "4fe1d42f2acc463b733bb42e3f8e67dbc2a0eb2d", "status": "affected", "versionType": "git" }, { "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9", "lessThan": "414476c4fb11be070c09ab8f3e75c9ee324a108a", "status": "affected", "versionType": "git" }, { "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9", "lessThan": "7cf25987820350cb950856c71b409e5b6eed52bd", "status": "affected", "versionType": "git" }, { "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9", "lessThan": "98d8dde9232250a57ad5ef16479bf6a349e09b80", "status": "affected", "versionType": "git" }, { "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9", "lessThan": "4bdc5a62c6e50600d8a1c3e18fd6dce0c27c9497", "status": "affected", "versionType": "git" }, { "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9", "lessThan": "e0fe3392371293175f25028020ded5267f4cd8e3", "status": "affected", "versionType": "git" }, { "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9", "lessThan": "8621725afb38e111969c64280b71480afde2aace", "status": "affected", "versionType": "git" }, { "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9", "lessThan": "e629295bd60abf4da1db85b82819ca6a4f6c1e79", "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/hyperv_transport.c" ], "versions": [ { "version": "4.14", "status": "affected" }, { "version": "0", "lessThan": "4.14", "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": "6.12.1", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.13", "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": "4.14", "versionEndExcluding": "4.19.324" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.4.286" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.10.230" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.15.172" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.1.117" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.6.61" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.11.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.12.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/285266ef92f7b4bf7d26e1e95e215ce6a6badb4a" }, { "url": "https://git.kernel.org/stable/c/4fe1d42f2acc463b733bb42e3f8e67dbc2a0eb2d" }, { "url": "https://git.kernel.org/stable/c/414476c4fb11be070c09ab8f3e75c9ee324a108a" }, { "url": "https://git.kernel.org/stable/c/7cf25987820350cb950856c71b409e5b6eed52bd" }, { "url": "https://git.kernel.org/stable/c/98d8dde9232250a57ad5ef16479bf6a349e09b80" }, { "url": "https://git.kernel.org/stable/c/4bdc5a62c6e50600d8a1c3e18fd6dce0c27c9497" }, { "url": "https://git.kernel.org/stable/c/e0fe3392371293175f25028020ded5267f4cd8e3" }, { "url": "https://git.kernel.org/stable/c/8621725afb38e111969c64280b71480afde2aace" }, { "url": "https://git.kernel.org/stable/c/e629295bd60abf4da1db85b82819ca6a4f6c1e79" } ], "title": "hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer", "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-2024-53103", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:11:01.150228Z" } } } ], "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": "2025-10-01T20:17:12.174Z" } }, { "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": "2025-11-03T22:29:15.536Z" } } ] } }