CVE-2018-10883

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-07-30 · updated 2026-06-17
Weakness: CWE-787

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.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 18.04
Debian Linux: 8.0
Linux kernel: before 4.9.110 — fixed in 4.9.110
Red Hat Enterprise Linux: 7.0
RedHat Enterprise Linux Desktop: 7.0
RedHat Enterprise Linux Server: 7.0
RedHat Enterprise Linux Workstation: 7.0

How to fix

Upgrade to a fixed version: Linux kernel 4.9.110. Check the vendor advisory for mitigations.

References

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

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