{"api_version":"1","generated_at":"2026-09-25T12:40:15+00:00","cve":"CVE-2026-98117","urls":{"html":"https://cve.report/CVE-2026-98117","api":"https://cve.report/api/cve/CVE-2026-98117.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98117","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98117"},"summary":{"title":"cachefiles: Fix potential UAF/KASAN warning","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: Fix potential UAF/KASAN warning\n\nCurrently, trace_cachefiles_coherency() is being passed a pointer to a\n__be64 lain over the coherency data in struct cachefiles_xattr so that it\ncan display the first 8 bytes.  However, the data is of variable length and\ncould even be 0 bytes.  This could lead to a UAF or KASAN warning.\n\nFix this by making sure the buffer has room for at least 8 bytes and that\nthose 8 bytes are pre-cleared.\n\nFurther, those bytes are not 8-byte aligned, so fix the tracepoint to\nextract the data as four 2-byte words (they are 2-byte aligned) and\nreassemble the __be64.  The compiler will convert this into a single 8-byte\nload where the CPU supports it.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:42","updated_at":"2026-09-25 11:17:42"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/93488ea378b4427598cace558236c110515d743b","name":"https://git.kernel.org/stable/c/93488ea378b4427598cace558236c110515d743b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/68d459e6e609c31f96a203dd6eec60c634f155e1","name":"https://git.kernel.org/stable/c/68d459e6e609c31f96a203dd6eec60c634f155e1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a67632c8c2688d6e0091529bcefe54bc5ee80e9b","name":"https://git.kernel.org/stable/c/a67632c8c2688d6e0091529bcefe54bc5ee80e9b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98117","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98117","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 229105e5cfd9832a9ef1368c96e0098ec3a5fbf0 68d459e6e609c31f96a203dd6eec60c634f155e1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 229105e5cfd9832a9ef1368c96e0098ec3a5fbf0 93488ea378b4427598cace558236c110515d743b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 229105e5cfd9832a9ef1368c96e0098ec3a5fbf0 a67632c8c2688d6e0091529bcefe54bc5ee80e9b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/cachefiles/xattr.c","include/trace/events/cachefiles.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"68d459e6e609c31f96a203dd6eec60c634f155e1","status":"affected","version":"229105e5cfd9832a9ef1368c96e0098ec3a5fbf0","versionType":"git"},{"lessThan":"93488ea378b4427598cace558236c110515d743b","status":"affected","version":"229105e5cfd9832a9ef1368c96e0098ec3a5fbf0","versionType":"git"},{"lessThan":"a67632c8c2688d6e0091529bcefe54bc5ee80e9b","status":"affected","version":"229105e5cfd9832a9ef1368c96e0098ec3a5fbf0","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/cachefiles/xattr.c","include/trace/events/cachefiles.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc3","versionStartIncluding":"6.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: Fix potential UAF/KASAN warning\n\nCurrently, trace_cachefiles_coherency() is being passed a pointer to a\n__be64 lain over the coherency data in struct cachefiles_xattr so that it\ncan display the first 8 bytes.  However, the data is of variable length and\ncould even be 0 bytes.  This could lead to a UAF or KASAN warning.\n\nFix this by making sure the buffer has room for at least 8 bytes and that\nthose 8 bytes are pre-cleared.\n\nFurther, those bytes are not 8-byte aligned, so fix the tracepoint to\nextract the data as four 2-byte words (they are 2-byte aligned) and\nreassemble the __be64.  The compiler will convert this into a single 8-byte\nload where the CPU supports it."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:36:02.319Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/68d459e6e609c31f96a203dd6eec60c634f155e1"},{"url":"https://git.kernel.org/stable/c/93488ea378b4427598cace558236c110515d743b"},{"url":"https://git.kernel.org/stable/c/a67632c8c2688d6e0091529bcefe54bc5ee80e9b"}],"title":"cachefiles: Fix potential UAF/KASAN warning","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98117","datePublished":"2026-09-25T10:36:02.319Z","dateReserved":"2026-09-25T10:25:14.317Z","dateUpdated":"2026-09-25T10:36:02.319Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:42","lastModifiedDate":"2026-09-25 11:17:42","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98117","Ordinal":"1","Title":"cachefiles: Fix potential UAF/KASAN warning","CVE":"CVE-2026-98117","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98117","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: Fix potential UAF/KASAN warning\n\nCurrently, trace_cachefiles_coherency() is being passed a pointer to a\n__be64 lain over the coherency data in struct cachefiles_xattr so that it\ncan display the first 8 bytes.  However, the data is of variable length and\ncould even be 0 bytes.  This could lead to a UAF or KASAN warning.\n\nFix this by making sure the buffer has room for at least 8 bytes and that\nthose 8 bytes are pre-cleared.\n\nFurther, those bytes are not 8-byte aligned, so fix the tracepoint to\nextract the data as four 2-byte words (they are 2-byte aligned) and\nreassemble the __be64.  The compiler will convert this into a single 8-byte\nload where the CPU supports it.","Type":"Description","Title":"cachefiles: Fix potential UAF/KASAN warning"}]}}}