#VU30283 NULL pointer dereference in Linux kernel - CVE-2019-20806
Published: May 27, 2020 / Updated: July 17, 2020
Vulnerability identifier: #VU30283
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-20806
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the Linux kernel before 5.2. There is a NULL pointer dereference in tw5864_handle_frame() in drivers/media/pci/tw5864/tw5864-video.c, which may cause denial of service, aka CID-2e7682ebfc75. A remote attacker can perform a denial of service (DoS) attack.
Remediation
Update to version 5.2.
External links
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2e7682ebfc750177a4944eeb56e97a3f05734528
- https://github.com/torvalds/linux/commit/2e7682ebfc750177a4944eeb56e97a3f05734528
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
- https://security.netapp.com/advisory/ntap-20200619-0001/
- https://www.debian.org/security/2020/dsa-4698