CVE-2026-74305

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74305", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.882Z", "datePublished": "2026-08-15T05:58:06.654Z", "dateUpdated": "2026-10-16T18:55:31.883Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:45:39.394Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Tighten cgroup storage cookie checks for prog arrays\n\nThe fix in commit abad3d0bad72 (\"bpf: Fix oob access in cgroup local\nstorage\") is still incomplete. The prog-array compatibility check\ntreats a program with no cgroup storage as compatible with any stored\nstorage cookie. This allows a storage-less program to bridge a tail\ncall chain between an entry program and a storage-using callee even\nthough cgroup local storage at runtime still follows the caller's\ncontext, that is, A -> B(no storage) -> C(storage) path.\n\nRequiring exact cookie equality would break the legitimate case of a\nstorage-less leaf program being tail called from a storage-using one.\nInstead, only accept a zero storage cookie if the program cannot\nperform tail calls itself. This keeps A -> B(no storage) working\nwhile rejecting the A -> B(no storage) -> C(storage) bridge."}], "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 - Exploitation requires local bpf() syscalls to load cgroup BPF programs/maps, populate a prog array, attach or test-run them; per kernel guidance BPF/cgroup hooks are Local even when later triggered by sockets or packets.\nAC:L - The attacker fully controls crafting programs A/B/C, prog-array insertion order, and triggering the cgroup hook or BPF_PROG_TEST_RUN; no race or victim-dependent state is required to reach the mismatched-storage OOB path.\nPR:L - Reaching the buggy compatibility check needs only local BPF privileges (CAP_BPF or unprivileged BPF where enabled) plus cgroup attach/test-run access obtainable by unprivileged users in delegated cgroups or user namespaces, not init-namespace root.\nUI:N - The attacker loads, wires, and triggers the malicious BPF program chain itself (e.g., creating a socket or using BPF_PROG_TEST_RUN); no action by another user or administrator is required.\nS:U - The out-of-bounds cgroup local storage access corrupts kernel heap memory within the same kernel security domain and enables local privilege escalation, not a cross-boundary VM, IOMMU, or sandbox escape.\nC:H - Tail-called program C obtains a pointer from bpf_get_local_storage() backed by entry program A's smaller cgroup storage while verifier-approved helpers perform larger accesses, yielding controllable out-of-bounds kernel heap reads.\nI:H - The returned cgroup storage pointer is writable map memory, and size-mismatched helper copies (e.g., bpf_map_update_elem/copy_map_value_long) enable controllable out-of-bounds heap writes exploitable for kernel corruption and code execution.\nA:H - The heap out-of-bounds read/write can corrupt adjacent kernel objects and readily trigger kernel oops/panic or denial of service, as demonstrated by the cgroup_storage_oob selftest expecting KASAN reports without the fix."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/core.c"], "versions": [{"version": "c1c74584b9b4043c52e41fec415226e582d266a3", "lessThan": "87177497cca90bf4fcfb759eb898560eb5b46a10", "status": "affected", "versionType": "git"}, {"version": "66da7cee78590259b400e51a70622ccd41da7bb2", "lessThan": "1c762d28698483ce7c372091f34d86e4d4828652", "status": "affected", "versionType": "git"}, {"version": "7acfa07c585e3d7a64654d38f0a5c762877d0b9b", "lessThan": "eb73056ce2a6f101ddd3bdba89af6b24ebffff85", "status": "affected", "versionType": "git"}, {"version": "41688d1fc5d163a6c2c0e95c0419e2cb31a44648", "lessThan": "9ca06849c4239aa2d580c54651f8588c51cb398b", "status": "affected", "versionType": "git"}, {"version": "abad3d0bad72a52137e0c350c59542d75ae4f513", "lessThan": "46fbafe3d2d569d828e8d24a7dbe1659f63685cf", "status": "affected", "versionType": "git"}, {"version": "abad3d0bad72a52137e0c350c59542d75ae4f513", "lessThan": "cb22dc79528eb26a46d346c3118dbd6b14c70609", "status": "affected", "versionType": "git"}, {"version": "abad3d0bad72a52137e0c350c59542d75ae4f513", "lessThan": "10627ddc0167aab5c1c390a10ef461e9937aba08", "status": "affected", "versionType": "git"}, {"version": "19341d5c59e8c7e8528e40f8663e99d67810473c", "status": "affected", "versionType": "git"}, {"version": "5.15.192", "lessThan": "5.15.212", "status": "affected", "versionType": "semver"}, {"version": "6.1.151", "lessThan": "6.1.178", "status": "affected", "versionType": "semver"}, {"version": "6.6.105", "lessThan": "6.6.145", "status": "affected", "versionType": "semver"}, {"version": "6.12.46", "lessThan": "6.12.97", "status": "affected", "versionType": "semver"}, {"version": "6.16.1", "lessThan": "6.17", "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/core.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "5.15.192", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.151", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.105", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.46", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/87177497cca90bf4fcfb759eb898560eb5b46a10"}, {"url": "https://git.kernel.org/stable/c/1c762d28698483ce7c372091f34d86e4d4828652"}, {"url": "https://git.kernel.org/stable/c/eb73056ce2a6f101ddd3bdba89af6b24ebffff85"}, {"url": "https://git.kernel.org/stable/c/9ca06849c4239aa2d580c54651f8588c51cb398b"}, {"url": "https://git.kernel.org/stable/c/46fbafe3d2d569d828e8d24a7dbe1659f63685cf"}, {"url": "https://git.kernel.org/stable/c/cb22dc79528eb26a46d346c3118dbd6b14c70609"}, {"url": "https://git.kernel.org/stable/c/10627ddc0167aab5c1c390a10ef461e9937aba08"}], "title": "bpf: Tighten cgroup storage cookie checks for prog arrays", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-74305", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T18:52:53.092866Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:55:31.883Z"}}]}}

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Reaching the buggy compatibility check needs only local BPF privileges (CAP_BPF or unprivileged BPF where enabled) plus cgroup attach/test-run access obtainable by unprivileged users in delegated cgroups or user namespaces, not init-namespace root.\nUI:N - The attacker loads, wires, and triggers the malicious BPF program chain itself (e.g., creating a socket or using BPF_PROG_TEST_RUN); no action by another user or administrator is required.\nS:U - The out-of-bounds cgroup local storage access corrupts kernel heap memory within the same kernel security domain and enables local privilege escalation, not a cross-boundary VM, IOMMU, or sandbox escape.\nC:H - Tail-called program C obtains a pointer from bpf_get_local_storage() backed by entry program A's smaller cgroup storage while verifier-approved helpers perform larger accesses, yielding controllable out-of-bounds kernel heap reads.\nI:H - The returned cgroup storage pointer is writable map memory, and size-mismatched helper copies (e.g., bpf_map_update_elem/copy_map_value_long) enable controllable out-of-bounds heap writes exploitable for kernel corruption and code execution.\nA:H - The heap out-of-bounds read/write can corrupt adjacent kernel objects and readily trigger kernel oops/panic or denial of service, as demonstrated by the cgroup_storage_oob selftest expecting KASAN reports without the fix."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "c1c74584b9b4043c52e41fec415226e582d266a3", "lessThan": "87177497cca90bf4fcfb759eb898560eb5b46a10", "versionType": "git"}, {"status": "affected", "version": "66da7cee78590259b400e51a70622ccd41da7bb2", "lessThan": "1c762d28698483ce7c372091f34d86e4d4828652", "versionType": "git"}, {"status": "affected", "version": "7acfa07c585e3d7a64654d38f0a5c762877d0b9b", "lessThan": "eb73056ce2a6f101ddd3bdba89af6b24ebffff85", "versionType": "git"}, {"status": "affected", "version": "41688d1fc5d163a6c2c0e95c0419e2cb31a44648", "lessThan": "9ca06849c4239aa2d580c54651f8588c51cb398b", "versionType": "git"}, {"status": "affected", "version": "abad3d0bad72a52137e0c350c59542d75ae4f513", "lessThan": "46fbafe3d2d569d828e8d24a7dbe1659f63685cf", "versionType": "git"}, {"status": "affected", "version": "abad3d0bad72a52137e0c350c59542d75ae4f513", "lessThan": "cb22dc79528eb26a46d346c3118dbd6b14c70609", "versionType": "git"}, {"status": "affected", "version": "abad3d0bad72a52137e0c350c59542d75ae4f513", "lessThan": "10627ddc0167aab5c1c390a10ef461e9937aba08", "versionType": "git"}, {"status": "affected", "version": "19341d5c59e8c7e8528e40f8663e99d67810473c", "versionType": "git"}, {"status": "affected", "version": "5.15.192", "lessThan": "5.15.212", "versionType": "semver"}, {"status": "affected", "version": "6.1.151", "lessThan": "6.1.178", "versionType": "semver"}, {"status": "affected", "version": "6.6.105", "lessThan": "6.6.145", "versionType": "semver"}, {"status": "affected", "version": "6.12.46", "lessThan": "6.12.97", "versionType": "semver"}, {"status": "affected", "version": "6.16.1", "lessThan": "6.17", "versionType": "semver"}], "programFiles": ["kernel/bpf/core.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"status": "unaffected", "version": "0", "lessThan": "6.17", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.212", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.178", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.97", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.40", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.5", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["kernel/bpf/core.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/87177497cca90bf4fcfb759eb898560eb5b46a10"}, {"url": "https://git.kernel.org/stable/c/1c762d28698483ce7c372091f34d86e4d4828652"}, {"url": "https://git.kernel.org/stable/c/eb73056ce2a6f101ddd3bdba89af6b24ebffff85"}, {"url": "https://git.kernel.org/stable/c/9ca06849c4239aa2d580c54651f8588c51cb398b"}, {"url": "https://git.kernel.org/stable/c/46fbafe3d2d569d828e8d24a7dbe1659f63685cf"}, {"url": "https://git.kernel.org/stable/c/cb22dc79528eb26a46d346c3118dbd6b14c70609"}, {"url": "https://git.kernel.org/stable/c/10627ddc0167aab5c1c390a10ef461e9937aba08"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Tighten cgroup storage cookie checks for prog arrays\n\nThe fix in commit abad3d0bad72 (\"bpf: Fix oob access in cgroup local\nstorage\") is still incomplete. The prog-array compatibility check\ntreats a program with no cgroup storage as compatible with any stored\nstorage cookie. This allows a storage-less program to bridge a tail\ncall chain between an entry program and a storage-using callee even\nthough cgroup local storage at runtime still follows the caller's\ncontext, that is, A -> B(no storage) -> C(storage) path.\n\nRequiring exact cookie equality would break the legitimate case of a\nstorage-less leaf program being tail called from a storage-using one.\nInstead, only accept a zero storage cookie if the program cannot\nperform tail calls itself. This keeps A -> B(no storage) working\nwhile rejecting the A -> B(no storage) -> C(storage) bridge."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.212", "versionStartIncluding": "5.15.192"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.178", "versionStartIncluding": "6.1.151"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.145", "versionStartIncluding": "6.6.105"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.97", "versionStartIncluding": "6.12.46"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.40", "versionStartIncluding": "6.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.5", "versionStartIncluding": "6.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "6.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "6.16.1"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:45:39.394Z"}}}, "cveMetadata": {"cveId": "CVE-2026-74305", "state": "PUBLISHED", "dateUpdated": "2026-10-16T18:55:31.883Z", "dateReserved": "2026-08-15T05:44:03.882Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-15T05:58:06.654Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "87177497cca90bf4fcfb759eb898560eb5b46a10", "status": "affected", "version": "c1c74584b9b4043c52e41fec415226e582d266a3", "versionType": "git"}, {"lessThan": "1c762d28698483ce7c372091f34d86e4d4828652", "status": "affected", "version": "66da7cee78590259b400e51a70622ccd41da7bb2", "versionType": "git"}, {"lessThan": "eb73056ce2a6f101ddd3bdba89af6b24ebffff85", "status": "affected", "version": "7acfa07c585e3d7a64654d38f0a5c762877d0b9b", "versionType": "git"}, {"lessThan": "9ca06849c4239aa2d580c54651f8588c51cb398b", "status": "affected", "version": "41688d1fc5d163a6c2c0e95c0419e2cb31a44648", "versionType": "git"}, {"lessThan": "46fbafe3d2d569d828e8d24a7dbe1659f63685cf", "status": "affected", "version": "abad3d0bad72a52137e0c350c59542d75ae4f513", "versionType": "git"}, {"lessThan": "cb22dc79528eb26a46d346c3118dbd6b14c70609", "status": "affected", "version": "abad3d0bad72a52137e0c350c59542d75ae4f513", "versionType": "git"}, {"lessThan": "10627ddc0167aab5c1c390a10ef461e9937aba08", "status": "affected", "version": "abad3d0bad72a52137e0c350c59542d75ae4f513", "versionType": "git"}, {"status": "affected", "version": "19341d5c59e8c7e8528e40f8663e99d67810473c", "versionType": "git"}, {"lessThan": "5.15.212", "status": "affected", "version": "5.15.192", "versionType": "semver"}, {"lessThan": "6.1.178", "status": "affected", "version": "6.1.151", "versionType": "semver"}, {"lessThan": "6.6.145", "status": "affected", "version": "6.6.105", "versionType": "semver"}, {"lessThan": "6.12.97", "status": "affected", "version": "6.12.46", "versionType": "semver"}, {"lessThan": "6.17", "status": "affected", "version": "6.16.1", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"lessThan": "6.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Tighten cgroup storage cookie checks for prog arrays\n\nThe fix in commit abad3d0bad72 (\"bpf: Fix oob access in cgroup local\nstorage\") is still incomplete. The prog-array compatibility check\ntreats a program with no cgroup storage as compatible with any stored\nstorage cookie. This allows a storage-less program to bridge a tail\ncall chain between an entry program and a storage-using callee even\nthough cgroup local storage at runtime still follows the caller's\ncontext, that is, A -> B(no storage) -> C(storage) path.\n\nRequiring exact cookie equality would break the legitimate case of a\nstorage-less leaf program being tail called from a storage-using one.\nInstead, only accept a zero storage cookie if the program cannot\nperform tail calls itself. This keeps A -> B(no storage) working\nwhile rejecting the A -> B(no storage) -> C(storage) bridge."}], "id": "CVE-2026-74305", "lastModified": "2026-10-16T19:17:38.187", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-74305", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T18:52:53.092866Z", "version": "2.0.3"}}]}, "published": "2026-08-15T06:22:30.190", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/10627ddc0167aab5c1c390a10ef461e9937aba08"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1c762d28698483ce7c372091f34d86e4d4828652"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/46fbafe3d2d569d828e8d24a7dbe1659f63685cf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/87177497cca90bf4fcfb759eb898560eb5b46a10"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9ca06849c4239aa2d580c54651f8588c51cb398b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cb22dc79528eb26a46d346c3118dbd6b14c70609"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb73056ce2a6f101ddd3bdba89af6b24ebffff85"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: bpf: Tighten cgroup storage cookie checks for prog arrays", "id": "2516844", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516844"}, "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"}, "cwe": "CWE-358", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: Tighten cgroup storage cookie checks for prog arrays\nThe fix in commit abad3d0bad72 (\"bpf: Fix oob access in cgroup local\nstorage\") is still incomplete. The prog-array compatibility check\ntreats a program with no cgroup storage as compatible with any stored\nstorage cookie. This allows a storage-less program to bridge a tail\ncall chain between an entry program and a storage-using callee even\nthough cgroup local storage at runtime still follows the caller's\ncontext, that is, A -> B(no storage) -> C(storage) path.\nRequiring exact cookie equality would break the legitimate case of a\nstorage-less leaf program being tail called from a storage-using one.\nInstead, only accept a zero storage cookie if the program cannot\nperform tail calls itself. This keeps A -> B(no storage) working\nwhile rejecting the A -> B(no storage) -> C(storage) bridge.", "A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) subsystem. This vulnerability allows a program without cgroup storage to bypass compatibility checks when bridging tail call chains. This could enable unintended interactions between programs with and without cgroup storage, potentially leading to a security bypass."], "name": "CVE-2026-74305", "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": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74305\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74305\nhttps://lore.kernel.org/linux-cve-announce/2026081550-CVE-2026-74305-30ba@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": ["*"], "status": "affected", "versions": {"scheme": "code_commit", "value": "[c1c74584b9b4043c52e41fec415226e582d266a3,87177497cca90bf4fcfb759eb898560eb5b46a10)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "code_commit", "value": "[66da7cee78590259b400e51a70622ccd41da7bb2,1c762d28698483ce7c372091f34d86e4d4828652)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "code_commit", "value": "[7acfa07c585e3d7a64654d38f0a5c762877d0b9b,eb73056ce2a6f101ddd3bdba89af6b24ebffff85)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "code_commit", "value": "[41688d1fc5d163a6c2c0e95c0419e2cb31a44648,9ca06849c4239aa2d580c54651f8588c51cb398b)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "code_commit", "value": "[abad3d0bad72a52137e0c350c59542d75ae4f513,46fbafe3d2d569d828e8d24a7dbe1659f63685cf)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "code_commit", "value": "[abad3d0bad72a52137e0c350c59542d75ae4f513,cb22dc79528eb26a46d346c3118dbd6b14c70609)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "code_commit", "value": "[abad3d0bad72a52137e0c350c59542d75ae4f513,10627ddc0167aab5c1c390a10ef461e9937aba08)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "code_commit", "value": "19341d5c59e8c7e8528e40f8663e99d67810473c"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "semver", "value": "[5.15.192,5.15.212)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.151,6.1.178)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.105,6.6.145)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.46,6.12.97)"}}, {"platform": ["*"], "status": "affected", "versions": {"scheme": "semver", "value": "[6.16.1,6.17)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": ["*"], "status": "affected", "versions": {"scheme": "semver", "value": "6.17"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.17)"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": ["*"], "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T17:00:12.632923+00:00", "updated": "2026-08-22T03:30:16.797535+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}