CVE-2024-38564

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Per kernel guidance BPF is Local.\nAC:L - Exploitation is fully deterministic \u2014 the attacker authors the cgroup_skb program, chooses the mismatched attach type, picks the target cgroup, and invokes the hook itself; there is no race, no memory-layout dependency, and no special kernel config beyond stock `CONFIG_CGROUP_BPF`.\nPR:L - The attach path requires CAP_NET_ADMIN/CAP_SYS_ADMIN via `bpf_token_capable()`, which on 6.8+ is satisfied by `ns_capable(token->userns, CAP_NET_ADMIN)` \u2014 i.e. reachable by container-root inside a BPF-token-delegated user namespace, an unprivileged principal from the host's perspective, matching the PR:L treatment of other BPF-capability-gated kernel.org CVEs.\nUI:N - The attacker attaches the link and then triggers the confused hook from its own process; no action by any other user is required.\nS:U - The type confusion corrupts kernel memory within the same kernel security authority \u2014 a standard local privilege escalation with no VM, IOMMU, or sandbox boundary crossed.\nC:H - sk_buff-offset loads against a 12\u201356 byte stack ctx read kernel stack memory out of bounds, and skb helpers such as `bpf_skb_load_bytes()` dereference wild pointers harvested from that memory, yielding effectively arbitrary kernel memory disclosure exfiltrated through BPF maps.\nI:H - `cg_skb_is_valid_access` permits writes to `__sk_buff->mark`, `->priority` and `->cb[0..4]`, which compile to raw stores ~0x30\u20130xa8 bytes past the small stack ctx, giving attacker-controlled out-of-bounds kernel stack writes into caller frames \u2014 a control-flow hijack primitive.\nA:H - The wild-pointer dereferences and stack corruption reliably produce a general protection fault, KASAN splat, or panic \u2014 this is exactly how syzbot (`syzbot+838346b979830606c854`) surfaced the bug."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/syscall.c"], "versions": [{"version": "3505cb9fa26cfec9512744466e754a8cbc2365b0", "lessThan": "6675c541f540a29487a802d3135280b69b9f568d", "status": "affected", "versionType": "git"}, {"version": "3505cb9fa26cfec9512744466e754a8cbc2365b0", "lessThan": "67929e973f5a347f05fef064fea4ae79e7cdb5fd", "status": "affected", "versionType": "git"}, {"version": "3505cb9fa26cfec9512744466e754a8cbc2365b0", "lessThan": "b34bbc76651065a5eafad8ddff1eb8d1f8473172", "status": "affected", "versionType": "git"}, {"version": "3505cb9fa26cfec9512744466e754a8cbc2365b0", "lessThan": "543576ec15b17c0c93301ac8297333c7b6e84ac7", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/syscall.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.33", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8.12", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.9.3", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10", "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": "6.6", "versionEndExcluding": "6.6.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.8.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.9.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.10"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6675c541f540a29487a802d3135280b69b9f568d"}, {"url": "https://git.kernel.org/stable/c/67929e973f5a347f05fef064fea4ae79e7cdb5fd"}, {"url": "https://git.kernel.org/stable/c/b34bbc76651065a5eafad8ddff1eb8d1f8473172"}, {"url": "https://git.kernel.org/stable/c/543576ec15b17c0c93301ac8297333c7b6e84ac7"}], "title": "bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-06-20T14:57:28.333210Z", "id": "CVE-2024-38564", "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": "2024-06-20T14:57:37.182Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:12:25.836Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/6675c541f540a29487a802d3135280b69b9f568d", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/67929e973f5a347f05fef064fea4ae79e7cdb5fd", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/b34bbc76651065a5eafad8ddff1eb8d1f8473172", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/543576ec15b17c0c93301ac8297333c7b6e84ac7", "tags": ["x_transferred"]}]}]}}

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Per kernel guidance BPF is Local.\nAC:L - Exploitation is fully deterministic \u2014 the attacker authors the cgroup_skb program, chooses the mismatched attach type, picks the target cgroup, and invokes the hook itself; there is no race, no memory-layout dependency, and no special kernel config beyond stock `CONFIG_CGROUP_BPF`.\nPR:L - The attach path requires CAP_NET_ADMIN/CAP_SYS_ADMIN via `bpf_token_capable()`, which on 6.8+ is satisfied by `ns_capable(token->userns, CAP_NET_ADMIN)` \u2014 i.e. reachable by container-root inside a BPF-token-delegated user namespace, an unprivileged principal from the host's perspective, matching the PR:L treatment of other BPF-capability-gated kernel.org CVEs.\nUI:N - The attacker attaches the link and then triggers the confused hook from its own process; no action by any other user is required.\nS:U - The type confusion corrupts kernel memory within the same kernel security authority \u2014 a standard local privilege escalation with no VM, IOMMU, or sandbox boundary crossed.\nC:H - 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Agregue la aplicaci\u00f3n de adjunto_tipo faltante para el caso link_create. De lo contrario, actualmente es posible adjuntar tipos de programa cgroup_skb a otros enlaces de cgroup."}], "id": "CVE-2024-38564", "lastModified": "2026-10-27T16:17:27.930", "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": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-38564", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-20T14:57:28.333210Z", "version": "2.0.3"}}]}, "published": "2024-06-19T14:15:16.560", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/543576ec15b17c0c93301ac8297333c7b6e84ac7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6675c541f540a29487a802d3135280b69b9f568d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/67929e973f5a347f05fef064fea4ae79e7cdb5fd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b34bbc76651065a5eafad8ddff1eb8d1f8473172"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/543576ec15b17c0c93301ac8297333c7b6e84ac7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6675c541f540a29487a802d3135280b69b9f568d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/67929e973f5a347f05fef064fea4ae79e7cdb5fd"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b34bbc76651065a5eafad8ddff1eb8d1f8473172"}], "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-2024:10282", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.30.1.rt7.371.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-11-26T00:00:00Z"}, {"advisory": "RHSA-2024:10281", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.30.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-11-26T00:00:00Z"}, {"advisory": "RHSA-2024:6297", "cpe": "cpe:/o:redhat:rhel_aus:8.6", "package": "kernel-0:4.18.0-372.121.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2024-09-04T00:00:00Z"}, {"advisory": "RHSA-2024:6297", "cpe": "cpe:/o:redhat:rhel_tus:8.6", "package": "kernel-0:4.18.0-372.121.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2024-09-04T00:00:00Z"}, {"advisory": "RHSA-2024:6297", "cpe": "cpe:/o:redhat:rhel_e4s:8.6", "package": "kernel-0:4.18.0-372.121.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2024-09-04T00:00:00Z"}, {"advisory": "RHSA-2024:10262", "cpe": "cpe:/o:redhat:rhel_eus:8.8", "package": "kernel-0:4.18.0-477.81.1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Extended Update Support", "release_date": "2024-11-26T00:00:00Z"}, {"advisory": "RHSA-2024:11486", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.19.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-12-19T00:00:00Z"}, {"advisory": "RHSA-2024:11486", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.19.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-12-19T00:00:00Z"}, {"advisory": "RHSA-2024:10945", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.96.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-12-11T00:00:00Z"}, {"advisory": "RHSA-2024:10946", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.96.1.rt14.381.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-12-11T00:00:00Z"}, {"advisory": "RHSA-2024:9546", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "kernel-0:5.14.0-427.44.1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2024-11-13T00:00:00Z"}], "bugzilla": {"description": "kernel: bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE", "id": "2293429", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2293429"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-665", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE\nbpf_prog_attach uses attach_type_to_prog_type to enforce proper\nattach type for BPF_PROG_TYPE_CGROUP_SKB. link_create uses\nbpf_prog_get and relies on bpf_prog_attach_check_attach_type\nto properly verify prog_type <> attach_type association.\nAdd missing attach_type enforcement for the link_create case.\nOtherwise, it's currently possible to attach cgroup_skb prog\ntypes to other cgroup hooks."], "name": "CVE-2024-38564", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "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:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-06-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-38564\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-38564\nhttps://lore.kernel.org/linux-cve-announce/2024061955-CVE-2024-38564-b069@gregkh/T"], "threat_severity": "Low"}

{}