Use After Free in Linux Kernel
CVE-2019-19768
In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-buffer).
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.042 (90.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.042 · newest: 0.042 · change: 0.000
Affected products
- Linux Kernel — versions 5.4.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.kernel.org/show_bug.cgi (Issue Tracking, Vendor Advisory)
- security.netapp.com/advisory/ntap-20200103-0001/
- lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html (vendor-advisory)
- usn.ubuntu.com/4344-1/ (vendor-advisory)
- usn.ubuntu.com/4345-1/ (vendor-advisory)
- usn.ubuntu.com/4342-1/ (vendor-advisory)
- usn.ubuntu.com/4346-1/ (vendor-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)
Frequently asked questions
- What is CVE-2019-19768?
- CVE-2019-19768 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.5/10. Published 2019-12-12.
- How severe is CVE-2019-19768?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-19768 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.