{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-42067", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-29T15:50:41.168Z", "datePublished": "2024-07-29T15:52:31.825Z", "dateUpdated": "2026-08-05T11:35:26.064Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:35:26.064Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()\n\nset_memory_rox() can fail, leaving memory unprotected.\n\nCheck return and bail out when bpf_jit_binary_lock_ro() returns\nan 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 JIT is driven only from local syscalls — `setsockopt(SO_ATTACH_FILTER)`, `seccomp(SECCOMP_SET_MODE_FILTER)`, or `bpf()` — all requiring local access to the machine. No remote peer can cause a BPF program to be JIT-compiled.\nAC:L - The precondition is a page-table allocation failure inside `set_memory_rox()`, and memory pressure is something a local attacker directly influences by ballooning allocations while spraying thousands of concurrent filter attachments. Both sides of the condition are under attacker control, so this is not a state beyond their influence.\nPR:L - A completely unprivileged user reaches `bpf_int_jit_compile()` through `sk_attach_filter()` on any socket or through `seccomp()` under NO_NEW_PRIVS — no CAP_BPF, no CAP_NET_ADMIN, and no user namespace required. Only a basic local account is needed.\nUI:N - The attacker attaches the filter and triggers execution entirely from their own process. No victim action, mount, or file open is involved.\nS:U - The unprotected memory and the resulting crash or code injection are all within the kernel's own security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - A failed lock leaves a writable, executable kernel page containing attacker-influenced JIT output, which is a direct kernel code-injection primitive when paired with any write; injected code yields arbitrary kernel memory disclosure. The loss of the read-only guarantee on executable memory is a full compromise of confidentiality in the worst case.\nI:H - On arm32 the JIT buffer stays RWX with attacker-chosen immediates embedded in it — precisely the JIT-spray/control-flow-hijack scenario that `bpf_jit_binary_lock_ro()` exists to prevent, permitting arbitrary kernel code execution. Kernel executable memory silently remaining writable is an integrity failure of the highest order.\nA:H - On s390 and x86-32 the buffer is allocated NX and only becomes executable via `set_memory_rox()`; on failure the JIT still sets `bpf_func`/`jited = 1`, so the first run of the filter faults on an instruction fetch from a non-executable page and oopses the kernel. An unprivileged user can repeat this to panic the system." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/arm/net/bpf_jit_32.c", "arch/loongarch/net/bpf_jit.c", "arch/mips/net/bpf_jit_comp.c", "arch/parisc/net/bpf_jit_core.c", "arch/s390/net/bpf_jit_comp.c", "arch/sparc/net/bpf_jit_comp_64.c", "arch/x86/net/bpf_jit_comp32.c", "include/linux/filter.h" ], "versions": [ { "version": "d48567c9a0d1e605639f8a8705a61bbb55fb4e84", "lessThan": "044da7ae7afd4ef60806d73654a2e6a79aa4ed7a", "status": "affected", "versionType": "git" }, { "version": "d48567c9a0d1e605639f8a8705a61bbb55fb4e84", "lessThan": "e60adf513275c3a38e5cb67f7fd12387e43a3ff5", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/arm/net/bpf_jit_32.c", "arch/loongarch/net/bpf_jit.c", "arch/mips/net/bpf_jit_comp.c", "arch/parisc/net/bpf_jit_core.c", "arch/s390/net/bpf_jit_comp.c", "arch/sparc/net/bpf_jit_comp_64.c", "arch/x86/net/bpf_jit_comp32.c", "include/linux/filter.h" ], "versions": [ { "version": "6.2", "status": "affected" }, { "version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver" }, { "version": "6.9.8", "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": "6.2", "versionEndExcluding": "6.9.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.10" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/044da7ae7afd4ef60806d73654a2e6a79aa4ed7a" }, { "url": "https://git.kernel.org/stable/c/e60adf513275c3a38e5cb67f7fd12387e43a3ff5" } ], "title": "bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:54:31.321Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/08f6c05feb1db21653e98ca84ea04ca032d014c7", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/9fef36cad60d4226f9d06953cd56d1d2f9119730", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/044da7ae7afd4ef60806d73654a2e6a79aa4ed7a", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e60adf513275c3a38e5cb67f7fd12387e43a3ff5", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-42067", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T16:19:56.137791Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:58.173Z" } } ] } }