CVE-2024-26808

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[{"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 \u2014 creating the inet ingress base chain, binding it to a device, and unregistering that device \u2014 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": 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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": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "9489e214ea8f2a90345516016aa51f2db3a8cc2f", "versionType": "git"}, {"status": "affected", "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "70f17b48c86622217a58d5099d29242fc9adac58", "versionType": "git"}, {"status": "affected", "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "af149a46890e8285d1618bd68b8d159bdb87fdb3", "versionType": "git"}, {"status": "affected", "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "e5888acbf1a3d8d021990ce6c6061fd5b2bb21b4", "versionType": "git"}, {"status": "affected", "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "36a0a80f32209238469deb481967d777a3d539ee", "versionType": "git"}, {"status": "affected", "version": "60a3815da702fd9e4759945f26cce5c47d3967ad", "lessThan": "01acb2e8666a6529697141a6017edbf206921913", "versionType": "git"}], "programFiles": ["net/netfilter/nft_chain_filter.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.10"}, {"status": "unaffected", "version": "0", "lessThan": "5.10", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.210", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.149", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.76", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.15", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.3", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/netfilter/nft_chain_filter.c"], "defaultStatus": "affected"}], "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"}], "x_generator": {"engine": "bippy-1.2.0"}, "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."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.210", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.149", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.76", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.15", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.7.3", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8", "versionStartIncluding": "5.10"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:27:26.994Z"}}}, "cveMetadata": {"cveId": "CVE-2024-26808", "state": "PUBLISHED", "dateUpdated": "2026-08-05T11:27:26.994Z", "dateReserved": "2024-02-19T14:20:24.179Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-04-04T09:50:26.672Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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de lo contrario, permanecer\u00e1 una referencia obsoleta a netdevice en la lista de enlaces."}], "id": "CVE-2024-26808", "lastModified": "2026-08-04T11:17:08.270", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-26808", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-02-27T19:35:33.665875Z", "version": "2.0.3"}}]}, "published": "2024-04-04T10:15:08.943", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/01acb2e8666a6529697141a6017edbf206921913"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36a0a80f32209238469deb481967d777a3d539ee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/70f17b48c86622217a58d5099d29242fc9adac58"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9489e214ea8f2a90345516016aa51f2db3a8cc2f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/af149a46890e8285d1618bd68b8d159bdb87fdb3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e5888acbf1a3d8d021990ce6c6061fd5b2bb21b4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/01acb2e8666a6529697141a6017edbf206921913"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36a0a80f32209238469deb481967d777a3d539ee"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/70f17b48c86622217a58d5099d29242fc9adac58"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9489e214ea8f2a90345516016aa51f2db3a8cc2f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/af149a46890e8285d1618bd68b8d159bdb87fdb3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e5888acbf1a3d8d021990ce6c6061fd5b2bb21b4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:5363", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.31.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-15T00:00:00Z"}, {"advisory": "RHSA-2024:5363", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.31.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-15T00:00:00Z"}, {"advisory": "RHSA-2024:5257", "cpe": "cpe:/a:redhat:rhel_e4s:9.0", "package": "kernel-0:5.14.0-70.112.1.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions", "release_date": "2024-08-13T00:00:00Z"}, {"advisory": "RHSA-2024:5256", "cpe": "cpe:/a:redhat:rhel_e4s:9.0::nfv", "package": "kernel-rt-0:5.14.0-70.112.1.rt21.184.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions", "release_date": "2024-08-13T00:00:00Z"}, {"advisory": "RHSA-2024:4823", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.75.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-07-24T00:00:00Z"}, {"advisory": "RHSA-2024:4831", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.75.1.rt14.360.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-07-24T00:00:00Z"}], "bugzilla": {"description": "kernel: netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain", "id": "2273405", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2273405"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain\nRemove netdevice from inet/ingress basechain in case NETDEV_UNREGISTER\nevent is reported, otherwise a stale reference to netdevice remains in\nthe hook list.", "A vulnerability was found in the Linux kernel's netfilter subsystem, related to the nft_chain_filter feature. This issue occurs when a NETDEV_UNREGISTER event is reported, which can leave a stale reference to a network device in the ingress basechain. If this issue is not addressed, this stale reference could result in lingering issues with network device handling."], "name": "CVE-2024-26808", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26808\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26808\nhttps://lore.kernel.org/linux-cve-announce/2024040458-CVE-2024-26808-2df2@gregkh/T"], "statement": "The vulnerability has been fixed by ensuring that network devices are correctly removed from the basechain when these events occur. It affects multiple Linux kernel versions and is rated as a medium-severity issue with a CVSS v3 base score of 5.5, indicating it could lead to a denial of service under certain conditions.", "threat_severity": "Moderate"}

{}