{"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": "2026-05-23T16:02:20.409Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T16:02:20.409Z"}, "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."}], "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"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2025-68208", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-12-16T14:15:53.700", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/57e04e2ff56e32f923154f0f7bc476fcb596ffe7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/64b12dca2b0abcb5fc0542887d18b926ea5cf711"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9944c7938cd5b3f37b0afec0481c7c015e4f1c58"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b0c8e6d3d866b6a7f73877f71968dbffd27b7785"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: bpf: account for current allocated stack depth in widen_imprecise_scalars()", "id": "2422667", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2422667"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-68208", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-68208\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-68208\nhttps://lore.kernel.org/linux-cve-announce/2025121633-CVE-2025-68208-d2fc@gregkh/T"], "threat_severity": "Important"}

{}