| ID |
CVE-2026-45252
|
| Sažetak |
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.
If 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. |
| Reference |
|
| CVSS |
| Base: | 5.5 |
| Impact: | 4.2 |
| Exploitability: | 1.2 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| NETWORK |
LOW |
HIGH |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| LOW |
NONE |
HIGH |
|
| CVSS vektor |
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H |
| Zadnje važnije ažuriranje |
21-05-2026 - 19:01 |
| Objavljeno |
21-05-2026 - 10:16 |
