CVE-2026-53078

{"id": "CVE-2026-53078", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "db1200ec2c3ddf119d4d9ba67982063df06bbacb", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "4c1c5efd9d1d74743d41ce4e1600501b4feb6827", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "0e6b30657bbc771f38025c828d722b6162428508", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "64eaf4ecda007140ddcdb28e00c48c9c69aaba39", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "2a2c98141e0a75f2d4a7d78b0316c88b3da784ac", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "22400725de070b787cd6d806c5795370ab46d269", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "18e3ffde1822f0b48b1753bf34aa97ce839df1d8", "versionType": "git"}, {"status": "affected", "version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "10f86a2a5c91fc4c4d001960f1c21abe52545ef6", "versionType": "git"}, {"status": "affected", "version": "48be3df15aa19c04eadf156c9129293c9a10389f", "versionType": "git"}, {"status": "affected", "version": "cd4644d904e1d153d516e73e2e127e7a2fe687e1", "versionType": "git"}, {"status": "affected", "version": "6e0bc946cbeec538322820786b5fb5200a2216ab", "versionType": "git"}, {"status": "affected", "version": "a7e52f7f675046d9ffc5692d815fa67c82fcdbf5", "versionType": "git"}, {"status": "affected", "version": "db7f8c57dbdd31f7e59f8dc8d1e1b38607a320ef", "versionType": "git"}, {"status": "affected", "version": "5.7.18", "lessThan": "5.8", "versionType": "semver"}, {"status": "affected", "version": "5.8.4", "lessThan": "5.9", "versionType": "semver"}, {"status": "affected", "version": "5.4.61", "lessThan": "5.5", "versionType": "semver"}], "programFiles": ["net/core/filter.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.9"}, {"status": "unaffected", "version": "0", "lessThan": "5.9", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.270", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.221", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.188", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.157", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.101", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.42", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.10", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/core/filter.c"], "defaultStatus": "affected"}]}], "published": "2026-06-24T17:17:21.850", "references": [{"url": "https://git.kernel.org/stable/c/0e6b30657bbc771f38025c828d722b6162428508", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/10f86a2a5c91fc4c4d001960f1c21abe52545ef6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/18e3ffde1822f0b48b1753bf34aa97ce839df1d8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/22400725de070b787cd6d806c5795370ab46d269", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2a2c98141e0a75f2d4a7d78b0316c88b3da784ac", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4c1c5efd9d1d74743d41ce4e1600501b4feb6827", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/64eaf4ecda007140ddcdb28e00c48c9c69aaba39", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/db1200ec2c3ddf119d4d9ba67982063df06bbacb", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-09-14T12:17:43.033", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "435DC924-B527-4D24-9771-05EBDC20047B", "versionEndExcluding": "5.5", "versionStartIncluding": "5.4.61"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8141C666-AECC-41B8-BD7E-DED92216B4A5", "versionEndExcluding": "5.8", "versionStartIncluding": "5.7.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "560FB3D4-80AB-415C-96DA-0097E0BCB36F", "versionEndExcluding": "5.9", "versionStartIncluding": "5.8.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9211326E-7B68-49D5-BDEC-B2289D9A2F81", "versionEndExcluding": "7.0.10", "versionStartIncluding": "5.9.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F79A2EB6-623E-4749-AEE0-DCB58C4C42F8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A67F6509-9592-44D5-8C65-B0791C7A501A"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A52A4ABE-5C24-4CD4-A348-E303B7F23C71"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "12019CF2-FD8E-4D59-BA4C-7093DF0BB091"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9B1AB90E-C0C6-4027-B27D-BA214BE33561"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "103FE5BA-7315-4263-9C95-EABEAD7E174F"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "47E31D6A-31EC-4F63-9CAE-B7A52B58E149"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.9:rc8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3497462B-A3DA-47CC-A5DD-C1C2D2E6DFDE"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}