CVE-2019-19319

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-11-27 · updated 2026-06-17
Weakness: CWE-416

Description

In the Linux kernel before 5.2, a setxattr operation, after a mount of a crafted ext4 image, can cause a slab-out-of-bounds write access because of an ext4_xattr_set_entry use-after-free in fs/ext4/xattr.c when a large old_size value is used in a memset call, aka CID-345c0dbf3a30.

Affected products

Linux kernel: 5.0.21
openSUSE Leap: 15.1
Red Hat Enterprise Linux: 7.0, 8.0

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
https://bugzilla.suse.com/show_bug.cgi?id=1158021
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=345c0dbf3a30
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19319
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
https://security.netapp.com/advisory/ntap-20200103-0001/
https://usn.ubuntu.com/4391-1/
https://www.debian.org/security/2020/dsa-4698
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
https://bugzilla.suse.com/show_bug.cgi?id=1158021

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