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Vulnerability DatabaseCVE-2022-49738
CVE-2022-49738:
Linux Debian vulnerability analysis and mitigation
Overview
A vulnerability in the Linux kernel's F2FS (Flash-Friendly File System) was identified as CVE-2022-49738. The issue involves a missing sanity check on iextraisize in the is_alive() function, which was discovered by syzbot. The vulnerability was publicly disclosed on March 27, 2025 (NVD).
Technical details
The vulnerability manifests as a KASAN slab-out-of-bounds error in multiple functions including datablkaddr (fs/f2fs/f2fs.h:2891), isalive (fs/f2fs/gc.c:1117), gcdatasegment (fs/f2fs/gc.c:1520), and dogarbagecollect (fs/f2fs/gc.c:1734). The issue occurs due to a lack of proper validation of iextraisize, leading to invalid address access during garbage collection operations (NVD).
Impact
When exploited, this vulnerability can cause the system to crash due to accessing invalid memory addresses during F2FS garbage collection operations (NVD).
Mitigation and workarounds
The vulnerability has been resolved in the Linux kernel through a patch that implements proper sanity checks on iextraisize in the is_alive() function (NVD).
Additional resources
Source: This report was generated using AI
Related Linux Debian vulnerabilities:
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