Use After Free in Linux Kernel
CVE-2019-19319
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Linux Kernel — versions 5.0.21
- openSUSE Leap — versions 15.1
- Red Hat Enterprise Linux — versions 7.0, 8.0
Weakness classification (CWE)
References
- github.com/bobfuzzer/CVE/tree/master/CVE-2019-19319 (Exploit, Third Party Advisory)
- security.netapp.com/advisory/ntap-20200103-0001/ (Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/06/msg00011.html (mailing-list)
- lists.debian.org/debian-lts-announce/2020/06/msg00012.html (mailing-list)
- lists.debian.org/debian-lts-announce/2020/06/msg00013.html (mailing-list)
- www.debian.org/security/2020/dsa-4698 (vendor-advisory)
- usn.ubuntu.com/4391-1/ (vendor-advisory)
- bugzilla.suse.com/show_bug.cgi
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/
Frequently asked questions
- What is CVE-2019-19319?
- CVE-2019-19319 is a medium-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 6.5/10. Published 2019-11-27.
- How severe is CVE-2019-19319?
- Medium severity. CVSS v3 base score is 6.5 out of 10.