{"id":"CVE-2026-98057","revision":"72ba15fd98964b8a82f6aa3a452e0f38","records":[{"revision":"72ba15fd98964b8a82f6aa3a452e0f38","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98057","aliases":[],"title":"ring-buffer: Add checking nr_subbufs to persistent ring buffer validation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Add checking nr_subbufs to persistent ring buffer validation\n\nSashiko reported that the code was using meta->nr_subbufs without making\nsure that it matched the nr_pages + 1 on data that was assuming the two\nwere the same.\n\nAdd a check to the persistent ring buffer validation code to make sure\nthat the saved nr_subbufs matches what we expect.","state":0,"publishedAt":"2026-09-25T10:24:03.541+00:00","modifiedAt":"2026-10-19T09:13:03.914+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/trace/ring_buffer.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3ec743d558f111d8999aea24577ba66c65ee2eeb\",\n                            \"lessThan\": \"f0467190e6a9fc61e343c8064ef16aad513788c3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f5b95f1fa2ef3a03f49eeec658ba97e721412b32\",\n                            \"lessThan\": \"364a31052aa9ef91db137f82d797366007cd85b7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f5b95f1fa2ef3a03f49eeec658ba97e721412b32\",\n                            \"lessThan\": \"69d502457e3f76142f7fcf6e2625e80e0ce8a60f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f5b95f1fa2ef3a03f49eeec658ba97e721412b32\",\n                            \"lessThan\": \"6c001a62c34f13fe1c6a24304c289b387d9e697d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.12.16\",\n                            \"lessThan\": \"6.12.111\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.13.4\",\n                            \"lessThan\": \"6.14\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/trace/ring_buffer.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.57\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/f0467190e6a9fc61e343c8064ef16aad513788c3","https://git.kernel.org/stable/c/364a31052aa9ef91db137f82d797366007cd85b7","https://git.kernel.org/stable/c/69d502457e3f76142f7fcf6e2625e80e0ce8a60f","https://git.kernel.org/stable/c/6c001a62c34f13fe1c6a24304c289b387d9e697d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98057","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98057","identifiers":["CVE-2026-98057"]},"retained":false,"historicalAffected":[]}],"coverage":[]}