mirror of
https://github.com/0xMarcio/cve.git
synced 2025-11-28 18:48:49 +00:00
21 lines
1.9 KiB
Markdown
21 lines
1.9 KiB
Markdown
### [CVE-2024-53131](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53131)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### Description
|
|
|
|
In the Linux kernel, the following vulnerability has been resolved:nilfs2: fix null-ptr-deref in block_touch_buffer tracepointPatch series "nilfs2: fix null-ptr-deref bugs on block tracepoints".This series fixes null pointer dereference bugs that occur when usingnilfs2 and two block-related tracepoints.This patch (of 2):It has been reported that when using "block:block_touch_buffer"tracepoint, touch_buffer() called from __nilfs_get_folio_block() causes aNULL pointer dereference, or a general protection fault when KASAN isenabled.This happens because since the tracepoint was added in touch_buffer(), itreferences the dev_t member bh->b_bdev->bd_dev regardless of whether thebuffer head has a pointer to a block_device structure. In the currentimplementation, the block_device structure is set after the functionreturns to the caller.Here, touch_buffer() is used to mark the folio/page that owns the bufferhead as accessed, but the common search helper for folio/page used by thecaller function was optimized to mark the folio/page as accessed when itwas reimplemented a long time ago, eliminating the need to calltouch_buffer() here in the first place.So this solves the issue by eliminating the touch_buffer() call itself.
|
|
|
|
### POC
|
|
|
|
#### Reference
|
|
No PoCs from references.
|
|
|
|
#### Github
|
|
- https://github.com/fkie-cad/nvd-json-data-feeds
|
|
- https://github.com/w4zu/Debian_security
|
|
|