CVE-2018-10879

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-07-26 · updated 2026-06-17
Weakness: CWE-416

Description

A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause a use-after-free in ext4_xattr_set_entry function and a denial of service or unspecified other impact may occur by renaming a file in a crafted ext4 filesystem image.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 18.04
Debian Linux: 8.0
Linux kernel: before 4.17.6 — fixed in 4.17.6
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 4.17.6. Check the vendor advisory for mitigations.

References

http://patchwork.ozlabs.org/patch/928666/
http://patchwork.ozlabs.org/patch/928667/
http://www.securityfocus.com/bid/104902
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.kernel.org/show_bug.cgi?id=200001
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10879
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=513f86d73855ce556ea9522b6bfd79f87356dc3a
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5369a762c882c0b6e9599e4ebbb3a9ba9eee7e2d
https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html
https://usn.ubuntu.com/3753-1/

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