{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53078", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.383Z", "datePublished": "2026-06-24T16:30:18.858Z", "dateUpdated": "2026-06-24T16:30:18.858Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:30:18.858Z"}, "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."}], "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": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "18e3ffde1822f0b48b1753bf34aa97ce839df1d8", "status": "affected", "versionType": "git"}, {"version": "fd09af010788a884de1c39537c288830c3d305db", "lessThan": "10f86a2a5c91fc4c4d001960f1c21abe52545ef6", "status": "affected", "versionType": "git"}, {"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", "lessThan": "5.8", "status": "affected", "versionType": "semver"}, {"version": "5.8.4", "lessThan": "5.9", "status": "affected", "versionType": "semver"}, {"version": "5.4.61", "lessThan": "5.5", "status": "affected", "versionType": "semver"}]}, {"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": "5.9", "status": "affected"}, {"version": "0", "lessThan": "5.9", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "5.9", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "7.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7.18"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.61"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7.18"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8.4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/18e3ffde1822f0b48b1753bf34aa97ce839df1d8"}, {"url": "https://git.kernel.org/stable/c/10f86a2a5c91fc4c4d001960f1c21abe52545ef6"}], "title": "bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops", "id": "2492299", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492299"}, "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-125", "details": ["A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) socket operations (sock_ops) program. When a BPF sock_ops program accesses context fields with the same destination and source registers, certain macros fail to properly clear the destination register. This can lead to a stack-out-of-bounds access, potentially allowing an attacker to execute arbitrary code or cause a denial of service. Additionally, it can result in a kernel pointer leak, disclosing sensitive information."], "name": "CVE-2026-53078", "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": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "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": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53078\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53078\nhttps://lore.kernel.org/linux-cve-announce/2026062406-CVE-2026-53078-bc4a@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[fd09af010788a884de1c39537c288830c3d305db,18e3ffde1822f0b48b1753bf34aa97ce839df1d8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[fd09af010788a884de1c39537c288830c3d305db,10f86a2a5c91fc4c4d001960f1c21abe52545ef6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "48be3df15aa19c04eadf156c9129293c9a10389f"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "cd4644d904e1d153d516e73e2e127e7a2fe687e1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "6e0bc946cbeec538322820786b5fb5200a2216ab"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "a7e52f7f675046d9ffc5692d815fa67c82fcdbf5"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "db7f8c57dbdd31f7e59f8dc8d1e1b38607a320ef"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.7.18,5.8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.8.4,5.9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.4.61,5.5)"}}], "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": null, "status": "affected", "versions": {"scheme": "semver", "value": "5.9"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.9)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0.10,7.0.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1,*]"}}], "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": "2026-06-24T19:30:08.640076+00:00", "updated": "2026-06-26T05:45:04.995213+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}