mirror of
https://github.com/0xMarcio/cve.git
synced 2025-11-30 18:56:19 +00:00
18 lines
1.3 KiB
Markdown
18 lines
1.3 KiB
Markdown
|
### [CVE-2024-26630](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26630)
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
### Description
|
||
|
|
|
||
|
|
In the Linux kernel, the following vulnerability has been resolved:mm: cachestat: fix folio read-after-free in cache walkIn cachestat, we access the folio from the page cache's xarray to computeits page offset, and check for its dirty and writeback flags. However, wedo not hold a reference to the folio before performing these actions,which means the folio can concurrently be released and reused as anotherfolio/page/slab.Get around this altogether by just using xarray's existing machinery forthe folio page offsets and dirty/writeback states.This changes behavior for tmpfs files to now always report zeroes in theirdirty and writeback counters. This is okay as tmpfs doesn't followconventional writeback cache behavior: its pages get "cleaned" duringswapout, after which they're no longer resident etc.
|
||
|
|
|
||
|
|
### POC
|
||
|
|
|
||
|
|
#### Reference
|
||
|
|
No PoCs from references.
|
||
|
|
|
||
|
|
#### Github
|
||
|
|
- https://github.com/fkie-cad/nvd-json-data-feeds
|
||
|
|
|