Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: check return value of indx_find to avoid infinite loop We found an infinite loop bug in the ntfs3 file system that can lead to a Denial-of-Service (DoS) condition. A malformed dentry in the ntfs3 filesystem can cause the kernel to hang during the lookup operations. By setting the HAS_SUB_NODE flag in an INDEX_ENTRY within a directory's INDEX_ALLOCATION block and manipulating the VCN pointer, an attacker can cause the indx_find() function to repeatedly read the same block, allocating 4 KB of memory each time. The kernel lacks VCN loop detection and depth limits, causing memory exhaustion and an OOM crash. This patch adds a return value check for fnd_push() to prevent a memory exhaustion vulnerability caused by infinite loops. When the index exceeds the size of the fnd->nodes array, fnd_push() returns -EINVAL. The indx_find() function checks this return value and stops processing, preventing further memory allocation.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 82cae269cfa953032fbb8980a7d554d60fb00b17 before 14c3188afbedfd5178bbabb8002487ea14b37b56; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 before 435d34719db0e130f6f0c621d67ed524cc1a7d10; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 before 68e32694be231c1cdb99b7637a657314e88e1a96; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 before 398e768d1accd1f5645492ab996005d7aa84a5b0; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 before b0ea441f44ce64fa514a415d4a9e6e2b06e7946c; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 before 0ad7a1be44479503dbe5c699759861ef5b8bd70c; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 before 1732053c8a6b360e2d5afb1b34fe9779398b072c |
| Linux / Linux | affected 5.15; unaffected 0 before 5.15; unaffected 5.15.202 through 5.15.*; unaffected 6.1.165 through 6.1.*; unaffected 6.6.128 through 6.6.*; unaffected 6.12.75 through 6.12.*; unaffected 6.18.16 through 6.18.*; unaffected 6.19.6 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/14c3188afbedfd5178bbabb8002487ea14b37b56
- https://git.kernel.org/stable/c/435d34719db0e130f6f0c621d67ed524cc1a7d10
- https://git.kernel.org/stable/c/68e32694be231c1cdb99b7637a657314e88e1a96
- https://git.kernel.org/stable/c/398e768d1accd1f5645492ab996005d7aa84a5b0
- https://git.kernel.org/stable/c/b0ea441f44ce64fa514a415d4a9e6e2b06e7946c
- https://git.kernel.org/stable/c/0ad7a1be44479503dbe5c699759861ef5b8bd70c
- https://git.kernel.org/stable/c/1732053c8a6b360e2d5afb1b34fe9779398b072c
ADP enrichment
No English description supplied.