#VU88889 Out-of-bounds read in Linux kernel
Vulnerability identifier: #VU88889
Vulnerability risk: Medium
CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-125
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the ovs_fragment() function in net/openvswitch/actions.c when running openvswitch on kernels built with KASAN. A remote attacker can send specially crafted IPv4 packets to the system, trigger an out-of-bounds read error and read contents of memory on the system or crash the kernel.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Linux kernel:
External links
http://git.kernel.org/stable/c/b1d7280f9ba1bfdbc3af5bdb82e51f014854f26f
http://git.kernel.org/stable/c/23e17ec1a5eb53fe39cc34fa5592686d5acd0dac
http://git.kernel.org/stable/c/5a52fa8ad45b5a593ed416adf326538638454ff1
http://git.kernel.org/stable/c/df9e900de24637be41879e2c50afb713ec4e8b2e
http://git.kernel.org/stable/c/490ad0a2390442d0a7b8c00972a83dbb09cab142
http://git.kernel.org/stable/c/a1478374b0bda89b4277a8afd39208271faad4be
http://git.kernel.org/stable/c/d841d3cf5297fde4ce6a41ff35451d0e82917f3e
http://git.kernel.org/stable/c/b3502b04e84ac5349be95fc033c17bd701d2787a
http://git.kernel.org/stable/c/7c0ea5930c1c211931819d83cfb157bff1539a4c
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
