{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-53078", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-53078", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-06-24T16:30:18.858Z", "updatedAt": "2026-10-19T19:47:15.752Z", "importedAt": "2026-10-24T01:58:14.884Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix same-register dst/src OOB read and pointer leak in sock_ops\n\nWhen a BPF sock_ops program accesses ctx fields with dst_reg == src_reg,\nthe SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the\ndestination register in the !fullsock / !locked_tcp_sock path.\n\nBoth macros borrow a temporary register to check is_fullsock /\nis_locked_tcp_sock when dst_reg == src_reg, because dst_reg holds the\nctx pointer. When the check is false (e.g., TCP_NEW_SYN_RECV state with\na request_sock), dst_reg should be zeroed but is not, leaving the stale\nctx pointer:\n\n - SOCK_OPS_GET_SK: dst_reg retains the ctx pointer, passes NULL checks\n as PTR_TO_SOCKET_OR_NULL, and can be used as a bogus socket pointer,\n leading to stack-out-of-bounds access in helpers like\n bpf_skc_to_tcp6_sock().\n\n - SOCK_OPS_GET_FIELD: dst_reg retains the ctx pointer which the\n verifier believes is a SCALAR_VALUE, leaking a kernel pointer.\n\nFix both macros by:\n - Changing JMP_A(1) to JMP_A(2) in the fullsock path to skip the\n added instruction.\n - Adding BPF_MOV64_IMM(si->dst_reg, 0) after the temp register\n restore in the !fullsock path, placed after the restore because\n dst_reg == src_reg means we need src_reg intact to read ctx->temp.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "fd09af010788a884de1c39537c288830c3d305db", "status": "affected", "versionType": "git", "lessThan": "db1200ec2c3ddf119d4d9ba67982063df06bbacb" }, { "version": "fd09af010788a884de1c39537c288830c3d305db", "status": "affected", "versionType": "git", "lessThan": "4c1c5efd9d1d74743d41ce4e1600501b4feb6827" }, { "version": "fd09af010788a884de1c39537c288830c3d305db", "status": "affected", "versionType": "git", "lessThan": "0e6b30657bbc771f38025c828d722b6162428508" }, { "version": "fd09af010788a884de1c39537c288830c3d305db", "status": "affected", "versionType": "git", "lessThan": "64eaf4ecda007140ddcdb28e00c48c9c69aaba39" }, { "version": "fd09af010788a884de1c39537c288830c3d305db", "status": "affected", "versionType": "git", "lessThan": "2a2c98141e0a75f2d4a7d78b0316c88b3da784ac" }, { "version": "fd09af010788a884de1c39537c288830c3d305db", "status": "affected", "versionType": "git", "lessThan": "22400725de070b787cd6d806c5795370ab46d269" }, { "version": "fd09af010788a884de1c39537c288830c3d305db", "status": "affected", "versionType": "git", "lessThan": "18e3ffde1822f0b48b1753bf34aa97ce839df1d8" }, { "version": "fd09af010788a884de1c39537c288830c3d305db", "status": "affected", "versionType": "git", "lessThan": "10f86a2a5c91fc4c4d001960f1c21abe52545ef6" }, { "version": "48be3df15aa19c04eadf156c9129293c9a10389f", "status": "affected", "versionType": "git" }, { "version": "cd4644d904e1d153d516e73e2e127e7a2fe687e1", "status": "affected", "versionType": "git" }, { "version": "6e0bc946cbeec538322820786b5fb5200a2216ab", "status": "affected", "versionType": "git" }, { "version": "a7e52f7f675046d9ffc5692d815fa67c82fcdbf5", "status": "affected", "versionType": "git" }, { "version": "db7f8c57dbdd31f7e59f8dc8d1e1b38607a320ef", "status": "affected", "versionType": "git" }, { "version": "5.7.18", "status": "affected", "versionType": "semver", "lessThan": "5.8" }, { "version": "5.8.4", "status": "affected", "versionType": "semver", "lessThan": "5.9" }, { "version": "5.4.61", "status": "affected", "versionType": "semver", "lessThan": "5.5" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.9", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.9" }, { "version": "5.10.270", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.221", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.188", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.157", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.101", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.42", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "7.0.10", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.0.*" }, { "version": "7.1", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }