{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98117","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.317Z","datePublished":"2026-09-25T10:36:02.319Z","dateUpdated":"2026-09-25T10:36:02.319Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-25T10:36:02.319Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/cachefiles/xattr.c","include/trace/events/cachefiles.h"],"versions":[{"version":"229105e5cfd9832a9ef1368c96e0098ec3a5fbf0","lessThan":"68d459e6e609c31f96a203dd6eec60c634f155e1","status":"affected","versionType":"git"},{"version":"229105e5cfd9832a9ef1368c96e0098ec3a5fbf0","lessThan":"93488ea378b4427598cace558236c110515d743b","status":"affected","versionType":"git"},{"version":"229105e5cfd9832a9ef1368c96e0098ec3a5fbf0","lessThan":"a67632c8c2688d6e0091529bcefe54bc5ee80e9b","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/cachefiles/xattr.c","include/trace/events/cachefiles.h"],"versions":[{"version":"6.14","status":"affected"},{"version":"0","lessThan":"6.14","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc3","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":"6.14","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.3-rc3"}]}]}],"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"}}}}