Description
Heap-based buffer overflow in the verify_vbr_checksum function in exfatfsck in exfat-utils before 1.2.1 allows remote attackers to cause a denial of service (infinite loop) or possibly execute arbitrary code via a crafted filesystem.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | fuse-exfat | 1.2.1-1 | — |
| Debian 13 | fuse-exfat | 1.2.1-1 | — |
| Debian 12 | fuse-exfat | 1.2.1-1 | — |
References
- https://github.com/relan/exfat/commit/2e86ae5f81da11f11673d0546efb525af02b7786
- GLSA-201612-31 vendor-advisory
- https://blog.fuzzing-project.org/25-Heap-overflow-and-endless-loop-in-exfatfsck-exfat-utils.html
- https://github.com/relan/exfat/issues/5
- 77307 vdb-entry
- [oss-security] 20151029 Re: Heap overflow and endless loop in exfatfsck / exfat-utils mailing-list