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
EPSS: 0.007 (49.1th percentile) — read the EPSS interpretation.
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.
Affected products
- Linux Linux_kernel — versions 5.0.21
- Opensuse Leap — versions 15.1
- Redhat Enterprise_linux — versions 7.0, 8.0
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (vendor-advisory, x_refsource_DEBIAN)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory)
- cve@mitre.org (x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM)
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.