Use-after-free in Linux kernel - CVE-2019-15920
Published: September 4, 2019 / Updated: July 17, 2020
Vulnerability identifier: #VU30795
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-15920
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote authenticated user to gain access to sensitive information.
An issue was discovered in the Linux kernel before 5.0.10. SMB2_read in fs/cifs/smb2pdu.c has a use-after-free. NOTE: this was not fixed correctly in 5.0.10; see the 5.0.11 ChangeLog, which documents a memory leak.
How to mitigate CVE-2019-15920
Install update from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.10
- https://github.com/torvalds/linux/commit/088aaf17aa79300cab14dbee2569c58cfafd7d6e
- https://security.netapp.com/advisory/ntap-20191004-0001/