220 lines
12 KiB
JSON
220 lines
12 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2025-68208",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2025-12-16T13:41:40.255Z",
|
|
"datePublished": "2025-12-16T13:48:35.298Z",
|
|
"dateUpdated": "2026-10-15T22:02:47.833Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T12:10:13.855Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: account for current allocated stack depth in widen_imprecise_scalars()\n\nThe usage pattern for widen_imprecise_scalars() looks as follows:\n\n prev_st = find_prev_entry(env, ...);\n queued_st = push_stack(...);\n widen_imprecise_scalars(env, prev_st, queued_st);\n\nWhere prev_st is an ancestor of the queued_st in the explored states\ntree. This ancestor is not guaranteed to have same allocated stack\ndepth as queued_st. E.g. in the following case:\n\n def main():\n for i in 1..2:\n foo(i) // same callsite, differnt param\n\n def foo(i):\n if i == 1:\n use 128 bytes of stack\n iterator based loop\n\nHere, for a second 'foo' call prev_st->allocated_stack is 128,\nwhile queued_st->allocated_stack is much smaller.\nwiden_imprecise_scalars() needs to take this into account and avoid\naccessing bpf_verifier_state->frame[*]->stack out of bounds."
|
|
}
|
|
],
|
|
"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 attacker reaches the vulnerable verifier through a local BPF_PROG_LOAD syscall; no network or physical path invokes it.\nAC:L - A crafted BPF program deterministically creates the mismatched verifier stack depths, as confirmed by the upstream KASAN regression test. Any heap grooming needed for exploitation is attacker-controlled, with no race or victim-dependent condition.\nPR:L - The trigger requires permission to load privileged BPF bytecode; ordinary unprivileged BPF is insufficient. However, CAP_BPF can be delegated through a BPF token to a user namespace, making this reachable without host-administrator privileges in a reasonable container deployment.\nUI:N - Submitting the crafted BPF program directly triggers verification without any action by another user.\nS:U - The vulnerability compromises the kernel containing the BPF verifier and does not inherently cross a VM, IOMMU, or separate security authority boundary.\nC:H - The loop can read numerous bpf_stack_state entries beyond the shorter heap allocation, substantially exceeding a small bounded disclosure. Adjacent verifier-state corruption can also enable further kernel-memory disclosure primitives.\nI:H - If attacker-groomed out-of-bounds bytes resemble an imprecise spilled scalar, maybe_widen_reg() passes the invalid pointer to __mark_reg_unknown(), overwriting an entire bpf_reg_state outside the allocation. This kernel-heap corruption can support data or control-flow manipulation.\nA:H - The upstream reproducer triggers a KASAN out-of-bounds failure, and deeper mismatches can fault or corrupt adjacent kernel objects. Repeated BPF_PROG_LOAD requests can therefore crash or panic the kernel."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"kernel/bpf/verifier.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "ab470fefce2837e66b771c60858118d50bb5bb10",
|
|
"lessThan": "64b12dca2b0abcb5fc0542887d18b926ea5cf711",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "2793a8b015f7f1caadb9bce9c63dc659f7522676",
|
|
"lessThan": "9944c7938cd5b3f37b0afec0481c7c015e4f1c58",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "2793a8b015f7f1caadb9bce9c63dc659f7522676",
|
|
"lessThan": "57e04e2ff56e32f923154f0f7bc476fcb596ffe7",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "2793a8b015f7f1caadb9bce9c63dc659f7522676",
|
|
"lessThan": "b0c8e6d3d866b6a7f73877f71968dbffd27b7785",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6.6.15",
|
|
"lessThan": "6.6.117",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"kernel/bpf/verifier.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.7",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.7",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.117",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.59",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.17.9",
|
|
"lessThanOrEqual": "6.17.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18",
|
|
"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": "6.6.15",
|
|
"versionEndExcluding": "6.6.117"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.7",
|
|
"versionEndExcluding": "6.12.59"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.7",
|
|
"versionEndExcluding": "6.17.9"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.7",
|
|
"versionEndExcluding": "6.18"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/64b12dca2b0abcb5fc0542887d18b926ea5cf711"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/9944c7938cd5b3f37b0afec0481c7c015e4f1c58"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/57e04e2ff56e32f923154f0f7bc476fcb596ffe7"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/b0c8e6d3d866b6a7f73877f71968dbffd27b7785"
|
|
}
|
|
],
|
|
"title": "bpf: account for current allocated stack depth in widen_imprecise_scalars()",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2025-68208",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2026-10-15T22:00:14.254468Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-10-15T22:02:47.833Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |