NULL pointer dereference in Linux kernel - CVE-2019-15924
Published: September 4, 2019 / Updated: July 17, 2020
Vulnerability identifier: #VU30799
CSH Severity: Medium
CVSS v4.0: 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-2019-15924
CWE-ID: CWE-476
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 attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the Linux kernel before 5.0.11. fm10k_init_module in drivers/net/ethernet/intel/fm10k/fm10k_main.c has a NULL pointer dereference because there is no -ENOMEM upon an alloc_workqueue failure. A remote attacker can perform a denial of service (DoS) attack.
How to mitigate CVE-2019-15924
Update to version 5.0.11.
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-5.0.11
- https://github.com/torvalds/linux/commit/01ca667133d019edc9f0a1f70a272447c84ec41f
- https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html
- https://lists.debian.org/debian-lts-announce/2019/09/msg00015.html
- https://security.netapp.com/advisory/ntap-20191004-0001/