CVE-2018-14611

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-07-27 · updated 2026-06-17
Weakness: CWE-416

Description

An issue was discovered in the Linux kernel through 4.17.10. There is a use-after-free in try_merge_free_space() when mounting a crafted btrfs image, because of a lack of chunk type flag checks in btrfs_check_chunk_valid in fs/btrfs/volumes.c.

Affected products

Debian Linux: 8.0
Linux kernel: through 4.17.10

References

http://www.securityfocus.com/bid/104917
https://bugzilla.kernel.org/show_bug.cgi?id=199839
https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
https://patchwork.kernel.org/patch/10503099/
https://usn.ubuntu.com/3932-1/
https://usn.ubuntu.com/3932-2/
https://usn.ubuntu.com/4094-1/
https://usn.ubuntu.com/4118-1/
http://www.securityfocus.com/bid/104917
https://bugzilla.kernel.org/show_bug.cgi?id=199839

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