{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45252","assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","state":"PUBLISHED","assignerShortName":"freebsd","dateReserved":"2026-05-11T16:27:44.891Z","datePublished":"2026-05-21T09:08:00.478Z","dateUpdated":"2026-05-21T13:47:03.794Z"},"containers":{"cna":{"datePublic":"2026-05-20T23:00:00.000Z","title":"Heap overflow in FUSE_LISTXATTR","references":[{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:20.fusefs.asc"}],"affected":[{"defaultStatus":"unknown","modules":["fusefs"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"status":"affected","versionType":"release","version":"15.0-RELEASE","lessThan":"p9"},{"status":"affected","versionType":"release","version":"14.4-RELEASE","lessThan":"p5"},{"status":"affected","versionType":"release","version":"14.3-RELEASE","lessThan":"p14"}]}],"credits":[{"lang":"en","type":"finder","value":"Joshua Rogers of AISLE Research Team"}],"descriptions":[{"lang":"en","value":"When a fusefs file system implements extended attributes, the kernel may send a FUSE_LISTXATTR message to the userspace daemon to retrieve the list of extended attributes for a given file.  The FUSE protocol requires the daemon to return a packed list of NUL-terminated strings.  The fusefs kernel module calls strlen() on this daemon-supplied buffer without first verifying that the entire list is NUL-terminated.\n\nIf a malicious daemon sends a non-NUL-terminated list, the fusefs kernel module may read beyond the end of one heap-allocated buffer and potentially write beyond the end of a second buffer.  A malicious daemon could disclose up to 253 bytes of kernel heap memory, or it could inject up to 250 attacker-controlled bytes into unallocated kernel heap space."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","description":"CWE-122: Heap-based Buffer Overflow","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","shortName":"freebsd","dateUpdated":"2026-05-21T09:08:00.478Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"HIGH","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-05-21T13:46:56.283986Z","id":"CVE-2026-45252","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-21T13:47:03.794Z"}}]}}