{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40078", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.160Z", "datePublished": "2025-10-28T11:48:43.548Z", "dateUpdated": "2026-05-11T21:42:04.928Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:42:04.928Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Explicitly check accesses to bpf_sock_addr\n\nSyzkaller found a kernel warning on the following sock_addr program:\n\n 0: r0 = 0\n 1: r2 = *(u32 *)(r1 +60)\n 2: exit\n\nwhich triggers:\n\n verifier bug: error during ctx access conversion (0)\n\nThis is happening because offset 60 in bpf_sock_addr corresponds to an\nimplicit padding of 4 bytes, right after msg_src_ip4. Access to this\npadding isn't rejected in sock_addr_is_valid_access and it thus later\nfails to convert the access.\n\nThis patch fixes it by explicitly checking the various fields of\nbpf_sock_addr in sock_addr_is_valid_access.\n\nI checked the other ctx structures and is_valid_access functions and\ndidn't find any other similar cases. Other cases of (properly handled)\npadding are covered in new tests in a subsequent patch."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/filter.c"], "versions": [{"version": "1cedee13d25ab118d325f95588c1a084e9317229", "lessThan": "de44cdc50d2dce8718cb57deddf9cf1be9a7759f", "status": "affected", "versionType": "git"}, {"version": "1cedee13d25ab118d325f95588c1a084e9317229", "lessThan": "76e04bbb4296fb6eac084dbfc27e02ccc744db3e", "status": "affected", "versionType": "git"}, {"version": "1cedee13d25ab118d325f95588c1a084e9317229", "lessThan": "6d8b1a21fd5c34622b0c3893c61e4a38d8ba53ec", "status": "affected", "versionType": "git"}, {"version": "1cedee13d25ab118d325f95588c1a084e9317229", "lessThan": "4f00858cd9bbbdf67159e28b85a8ca9e77c83622", "status": "affected", "versionType": "git"}, {"version": "1cedee13d25ab118d325f95588c1a084e9317229", "lessThan": "cdeafacb4f9ff261a96baef519e29480fd7b1019", "status": "affected", "versionType": "git"}, {"version": "1cedee13d25ab118d325f95588c1a084e9317229", "lessThan": "fe9d33f0470350558cb08cecb54cf2267b3a45d2", "status": "affected", "versionType": "git"}, {"version": "1cedee13d25ab118d325f95588c1a084e9317229", "lessThan": "ad8b4fe5617e3c85fc23267f02500c4f3bf0ff69", "status": "affected", "versionType": "git"}, {"version": "1cedee13d25ab118d325f95588c1a084e9317229", "lessThan": "6fabca2fc94d33cdf7ec102058983b086293395f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/filter.c"], "versions": [{"version": "4.18", "status": "affected"}, {"version": "0", "lessThan": "4.18", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.301", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.246", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.195", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.156", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.112", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.53", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.3", "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": "4.18", "versionEndExcluding": "5.4.301"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.10.246"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "5.15.195"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.1.156"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.6.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.12.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.17.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/de44cdc50d2dce8718cb57deddf9cf1be9a7759f"}, {"url": "https://git.kernel.org/stable/c/76e04bbb4296fb6eac084dbfc27e02ccc744db3e"}, {"url": "https://git.kernel.org/stable/c/6d8b1a21fd5c34622b0c3893c61e4a38d8ba53ec"}, {"url": "https://git.kernel.org/stable/c/4f00858cd9bbbdf67159e28b85a8ca9e77c83622"}, {"url": "https://git.kernel.org/stable/c/cdeafacb4f9ff261a96baef519e29480fd7b1019"}, {"url": "https://git.kernel.org/stable/c/fe9d33f0470350558cb08cecb54cf2267b3a45d2"}, {"url": "https://git.kernel.org/stable/c/ad8b4fe5617e3c85fc23267f02500c4f3bf0ff69"}, {"url": "https://git.kernel.org/stable/c/6fabca2fc94d33cdf7ec102058983b086293395f"}], "title": "bpf: Explicitly check accesses to bpf_sock_addr", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Explicitly check accesses to bpf_sock_addr\n\nSyzkaller found a kernel warning on the following sock_addr program:\n\n 0: r0 = 0\n 1: r2 = *(u32 *)(r1 +60)\n 2: exit\n\nwhich triggers:\n\n verifier bug: error during ctx access conversion (0)\n\nThis is happening because offset 60 in bpf_sock_addr corresponds to an\nimplicit padding of 4 bytes, right after msg_src_ip4. Access to this\npadding isn't rejected in sock_addr_is_valid_access and it thus later\nfails to convert the access.\n\nThis patch fixes it by explicitly checking the various fields of\nbpf_sock_addr in sock_addr_is_valid_access.\n\nI checked the other ctx structures and is_valid_access functions and\ndidn't find any other similar cases. Other cases of (properly handled)\npadding are covered in new tests in a subsequent patch."}], "id": "CVE-2025-40078", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-10-28T12:15:42.360", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4f00858cd9bbbdf67159e28b85a8ca9e77c83622"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6d8b1a21fd5c34622b0c3893c61e4a38d8ba53ec"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6fabca2fc94d33cdf7ec102058983b086293395f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/76e04bbb4296fb6eac084dbfc27e02ccc744db3e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ad8b4fe5617e3c85fc23267f02500c4f3bf0ff69"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cdeafacb4f9ff261a96baef519e29480fd7b1019"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/de44cdc50d2dce8718cb57deddf9cf1be9a7759f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fe9d33f0470350558cb08cecb54cf2267b3a45d2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: bpf: Explicitly check accesses to bpf_sock_addr", "id": "2406762", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2406762"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-40078", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-10-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40078\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40078\nhttps://lore.kernel.org/linux-cve-announce/2025102820-CVE-2025-40078-258f@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-10-29T10:58:11.820513+00:00", "updated": "2025-10-29T10:58:11.820537+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}