288 lines
14 KiB
JSON
288 lines
14 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2024-42068",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-07-29T15:50:41.168Z",
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"datePublished": "2024-07-29T15:52:32.538Z",
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"dateUpdated": "2026-10-21T12:34:58.185Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-21T12:34:58.185Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro()\n\nset_memory_ro() can fail, leaving memory unprotected.\n\nCheck its return and take it into account as an error."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - BPF program loading is reachable only through local syscalls — `setsockopt(SO_ATTACH_FILTER)`, `seccomp()`/`prctl(PR_SET_SECCOMP)`, and `bpf(BPF_PROG_LOAD)`. No remote peer can drive `bpf_prog_select_runtime()`.\nAC:L - A local attacker can repeatedly load interpreted BPF programs in a loop while driving the machine into reclaim pressure, which is the condition that makes `split_large_page()`'s page-table allocation fail and return -ENOMEM out of `set_memory_ro()`. Memory pressure is attacker-influenceable rather than a state outside the attacker's control, so the higher-severity value applies.\nPR:L - `SO_ATTACH_FILTER` in net/core/sock.c:1465 has no capability check at all, and the seccomp path is gated only by `no_new_privs`, which any unprivileged task can set — so an ordinary user, including one inside a container or sandbox, reaches the vulnerable code with zero capabilities.\nUI:N - The attacker loads and attaches the BPF program entirely within its own process; no other user or victim action is involved.\nS:U - The unprotected memory and the resulting compromise are both within the kernel's own security authority — this is standard kernel privilege escalation, not a hypervisor or IOMMU boundary crossing.\nC:H - Kernel memory that the hardening design requires to be read-only remains writable, and the introducing commit 60a3b2253c41 states that a modifiable interpreter image yields \"arbitrary read/write memory access\"; rewriting the `insnsi[]` stream turns the BPF interpreter into an arbitrary kernel-memory read primitive.\nI:H - The unprotected region contains both the executed eBPF bytecode and the `bpf_func` function pointer, so the lost `set_memory_ro()` gives an attacker a path to arbitrary kernel writes and arbitrary function calls — exactly the integrity guarantee this code exists to enforce.\nA:H - A BPF program whose instruction stream or `bpf_func` pointer can be altered executes attacker-chosen kernel control flow, trivially producing an oops or panic, so the availability impact of the lost protection is a full kernel crash."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"include/linux/filter.h",
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"kernel/bpf/core.c",
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"kernel/bpf/verifier.c"
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],
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"versions": [
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"version": "60a3b2253c413cf601783b070507d7dd6620c954",
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"lessThan": "a359696856ca9409fb97655c5a8ef0f549cb6e03",
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"status": "affected",
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"versionType": "git"
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"lessThan": "e4f602e3ff749ba770bf8ff10196e18358de6720",
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"status": "affected",
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"include/linux/filter.h",
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"kernel/bpf/core.c",
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"kernel/bpf/verifier.c"
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],
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"versions": [
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{
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"version": "3.18",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "3.18",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.162",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.97",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.160",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.9.8",
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"lessThanOrEqual": "6.9.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.10",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"versionStartIncluding": "3.18",
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