Use-after-free in Linux kernel - CVE-2019-12819
Published: June 14, 2019 / Updated: June 18, 2019
Vulnerability identifier: #VU90815
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-12819
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the __mdiobus_register() function in drivers/net/phy/mdio_bus.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2019-12819
Install update from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
- http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html
- http://www.securityfocus.com/bid/108768
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6ff7b060535e87c2ae14dd8548512abfdda528fb
- https://github.com/torvalds/linux/commit/6ff7b060535e87c2ae14dd8548512abfdda528fb
- https://security.netapp.com/advisory/ntap-20190710-0002/
- https://usn.ubuntu.com/4094-1/
- https://usn.ubuntu.com/4118-1/