{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-56600", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-27T14:03:06.011Z", "datePublished": "2024-12-27T14:51:06.610Z", "dateUpdated": "2026-08-05T11:45:20.668Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:45:20.668Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: inet6: do not leave a dangling sk pointer in inet6_create()\n\nsock_init_data() attaches the allocated sk pointer to the provided sock\nobject. If inet6_create() fails later, the sk object is released, but the\nsock object retains the dangling sk pointer, which may cause use-after-free\nlater.\n\nClear the sock sk pointer on error." } ], "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 local `socket(2)` syscall (`__sys_socket` → `__sock_create` → `inet6_create`), with no remote or network-peer input involved. No packet processing path reaches this function.\nAC:L - The failure path is deterministic, not a race: `socket(AF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6)` fails with -EACCES for any user outside the default-empty `ping_group_range`, and can be repeated in a tight loop to spray and reclaim the freed `struct sock` reliably.\nPR:L - Any unprivileged local user can trigger the dangling pointer — `ping_init_sock()` returning -EACCES is precisely the unprivileged case, and the `BPF_CGROUP_RUN_PROG_INET_SOCK` rejection path applies to ordinary confined services. No capability is needed, and the SOCK_RAW variant is reachable via `unshare -Urn`.\nUI:N - Exploitation is entirely driven by the attacker's own syscalls; no victim action or interaction is required.\nS:U - The freed object and the corrupted state are both kernel networking structures within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The use-after-free lets an attacker reclaim the freed `struct sock` slab object with controlled data while a live `struct socket` still references it, enabling disclosure of kernel memory — the upstream KASAN report shows exactly such a UAF read in `__sock_gen_cookie()`.\nI:H - Control over the contents of the reclaimed `struct sock` (including embedded function pointers and `sk_prot`/`sk_destruct` fields) that are later dereferenced through the stale `sock->sk` yields an arbitrary-write / control-flow-hijack primitive, the standard outcome for a kernel UAF on a sprayable slab object.\nA:H - Dereferencing the freed socket causes a kernel oops or panic, and the trigger is repeatable at will by an unprivileged user, making it a reliable local denial of service." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/ipv6/af_inet6.c" ], "versions": [ { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "f2709d1271cfdf55c670ab5c5982139ab627ddc7", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "35360255ca30776dee34d9fa764cffa24d0a5f65", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "276a473c956fb55a6f3affa9ff232e10fffa7b43", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "79e16a0d339532ea832d85798eb036fc4f9e0cea", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "706b07b7b37f886423846cb38919132090bc40da", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "f44fceb71d72d29fb00e0ac84cdf9c081b03cd06", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "9df99c395d0f55fb444ef39f4d6f194ca437d884", "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/ipv6/af_inet6.c" ], "versions": [ { "version": "2.6.12", "status": "affected" }, { "version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.287", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.231", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.174", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.120", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.66", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.5", "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": "2.6.12", "versionEndExcluding": "5.4.287" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.231" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.174" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.1.120" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.6.66" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.12.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f2709d1271cfdf55c670ab5c5982139ab627ddc7" }, { "url": "https://git.kernel.org/stable/c/35360255ca30776dee34d9fa764cffa24d0a5f65" }, { "url": "https://git.kernel.org/stable/c/276a473c956fb55a6f3affa9ff232e10fffa7b43" }, { "url": "https://git.kernel.org/stable/c/79e16a0d339532ea832d85798eb036fc4f9e0cea" }, { "url": "https://git.kernel.org/stable/c/706b07b7b37f886423846cb38919132090bc40da" }, { "url": "https://git.kernel.org/stable/c/f44fceb71d72d29fb00e0ac84cdf9c081b03cd06" }, { "url": "https://git.kernel.org/stable/c/9df99c395d0f55fb444ef39f4d6f194ca437d884" } ], "title": "net: inet6: do not leave a dangling sk pointer in inet6_create()", "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-2024-56600", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-02-11T15:42:30.859070Z" } } } ], "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": "2025-02-11T15:45:24.168Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:50:38.144Z" } } ] } }