Vulnerability Details : 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 category: Memory Corruption
Exploit prediction scoring system (EPSS) score for CVE-2019-19768
Probability of exploitation activity in the next 30 days: 0.65%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 77 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2019-19768
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
[email protected] |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
[email protected] |
CWE ids for CVE-2019-19768
-
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.Assigned by: [email protected] (Primary)
References for CVE-2019-19768
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
- https://usn.ubuntu.com/4342-1/
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
- https://usn.ubuntu.com/4344-1/
- https://usn.ubuntu.com/4345-1/
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
- https://usn.ubuntu.com/4346-1/
-
https://bugzilla.kernel.org/show_bug.cgi?id=205711
Issue Tracking;Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html
- https://www.debian.org/security/2020/dsa-4698
- https://security.netapp.com/advisory/ntap-20200103-0001/
Products affected by CVE-2019-19768
- cpe:2.3:o:linux:linux_kernel:5.4.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.4.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.4.0:rc2:*:*:*:*:*:*