{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-26808", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.179Z", "datePublished": "2024-04-04T09:50:26.672Z", "dateUpdated": "2026-08-05T11:27:26.994Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:27:26.994Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain\n\nRemove netdevice from inet/ingress basechain in case NETDEV_UNREGISTER\nevent is reported, otherwise a stale reference to netdevice remains in\nthe hook list." } ], "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 vulnerability is reached through the NETLINK_NETFILTER socket interface (nftables configuration) plus local netdevice operations; it is not exposed to remote packet processing.\nAC:L - The attacker fully controls every step — creating the inet ingress base chain, binding it to a device, and unregistering that device — so the stale reference is created deterministically with no race or uncontrolled precondition.\nPR:L - Configuring nft chains requires CAP_NET_ADMIN, but this is obtainable by an unprivileged user in a new network namespace via unshare -Urn, so only low privileges are truly needed.\nUI:N - The entire sequence is driven by the attacker's own syscalls; no action by any other user is required.\nS:U - The use-after-free occurs within kernel memory in the same security authority; it does not cross a virtualization or IOMMU boundary.\nC:H - The dangling net_device reference enables reads of freed heap memory (e.g. hook->ops.dev->name is leaked to userspace during chain dump), which with heap grooming yields sensitive kernel data disclosure.\nI:H - The use-after-free leaves the freed net_device reclaimable and later written through (nf_unregister_net_hook updates dev->nf_hooks_ingress), giving a controllable write primitive that can be leveraged for privilege escalation.\nA:H - Dereferencing the stale, freed net_device reliably triggers a use-after-free that oopses/panics the kernel." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/netfilter/nft_chain_filter.c" ], "versions": [ { "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "9489e214ea8f2a90345516016aa51f2db3a8cc2f", "status": "affected", "versionType": "git" }, { "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "70f17b48c86622217a58d5099d29242fc9adac58", "status": "affected", "versionType": "git" }, { "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "af149a46890e8285d1618bd68b8d159bdb87fdb3", "status": "affected", "versionType": "git" }, { "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "e5888acbf1a3d8d021990ce6c6061fd5b2bb21b4", "status": "affected", "versionType": "git" }, { "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "36a0a80f32209238469deb481967d777a3d539ee", "status": "affected", "versionType": "git" }, { "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "01acb2e8666a6529697141a6017edbf206921913", "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/netfilter/nft_chain_filter.c" ], "versions": [ { "version": "5.10", "status": "affected" }, { "version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.210", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.149", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.76", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.15", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.3", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8", "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": "5.10", "versionEndExcluding": "5.10.210" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.15.149" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.1.76" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.6.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.8" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9489e214ea8f2a90345516016aa51f2db3a8cc2f" }, { "url": "https://git.kernel.org/stable/c/70f17b48c86622217a58d5099d29242fc9adac58" }, { "url": "https://git.kernel.org/stable/c/af149a46890e8285d1618bd68b8d159bdb87fdb3" }, { "url": "https://git.kernel.org/stable/c/e5888acbf1a3d8d021990ce6c6061fd5b2bb21b4" }, { "url": "https://git.kernel.org/stable/c/36a0a80f32209238469deb481967d777a3d539ee" }, { "url": "https://git.kernel.org/stable/c/01acb2e8666a6529697141a6017edbf206921913" } ], "title": "netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:14:13.575Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/9489e214ea8f2a90345516016aa51f2db3a8cc2f", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/70f17b48c86622217a58d5099d29242fc9adac58", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/af149a46890e8285d1618bd68b8d159bdb87fdb3", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e5888acbf1a3d8d021990ce6c6061fd5b2bb21b4", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/36a0a80f32209238469deb481967d777a3d539ee", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/01acb2e8666a6529697141a6017edbf206921913", "tags": [ "x_transferred" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": [ "x_transferred" ] } ] }, { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2025-02-27T19:35:33.665875Z", "id": "CVE-2024-26808", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-27T19:36:03.888Z" } } ] }, "dataVersion": "5.2" }