| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| The Zephyr ext2 filesystem driver (subsys/fs/ext2) trusted the on-disk directory entry fields de_rec_len and de_name_len when walking a directory block. ext2_fetch_direntry() guarded only with de_name_len > EXT2_MAX_FILE_NAME, but de_name_len is a uint8_t and EXT2_MAX_FILE_NAME is 255, so the check is always false; the function then memcpy'd up to 255 name bytes and the lookup/readdir paths advanced traversal by an unvalidated de_rec_len. Each directory block is read into a block_size-sized slab buffer, and block_off can be driven near the block end by preceding entries' rec_len, so the 8-byte header read and the subsequent name memcpy can read up to ~263 bytes past the end of the block buffer into adjacent heap/slab memory. On the readdir path those bytes are returned to the caller in fs_dirent.name, leaking adjacent kernel heap memory; a de_rec_len of 0 also causes a zero-progress infinite loop (denial of service), and the unlink path's memmove(de, next, next_reclen) over unvalidated records is an additional OOB read/write source. The defect is reached by any path-based operation (open, stat, unlink, rename, mkdir) or directory listing on a mounted ext2 volume, so a crafted or corrupted ext2 image on attacker-supplied storage (SD card, USB mass storage, or otherwise mounted image) triggers it. Affected: Zephyr ext2 from its introduction in v3.5.0 through v4.4.0. The fix validates rec_len and name_len in the parser and rejects entries whose header does not fit the remaining block or whose rec_len crosses the block boundary in every traversal caller. |
| Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally. |
| Heap-based buffer overflow in Microsoft Office OneNote allows an unauthorized attacker to execute code locally. |
| Time-of-check time-of-use (toctou) race condition in Windows Network File System allows an authorized attacker to elevate privileges over a network. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Network File System allows an unauthorized attacker to execute code over a network. |
| Integer underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally. |
| Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network. |
| Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. |
| Heap-based buffer overflow in Windows Kernel allows an unauthorized attacker to elevate privileges with a physical attack. |
| Improper neutralization of special elements used in a command ('command injection') in Visual Studio Code allows an unauthorized attacker to execute code locally. |
| Deserialization of untrusted data in Microsoft Dynamics NAV allows an unauthorized attacker to execute code over a network. |
| Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code locally. |
| Use of uninitialized resource in Windows RDP allows an unauthorized attacker to disclose information over a network. |
| Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally. |
| Use after free in Microsoft Printer Drivers allows an authorized attacker to elevate privileges locally. |
| Insufficient granularity of access control in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally. |
| Improper authentication in Azure Spring Apps allows an authorized attacker to elevate privileges over a network. |
| Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally. |
| Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a network. |
| Heap-based buffer overflow in Windows FTP Service allows an unauthorized attacker to execute code over a network. |
