Vulnerability identifier: #VU27503
Vulnerability risk: Low
CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID:
CWE-ID:
CWE-416
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the __blk_add_trace() function in kernel/trace/blktrace.c. A local user can run a specially crafted program, trigger a use-after-free error and execute arbitrary code on the system with elevated privileges.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Linux kernel: 4.18 - 4.19.118, 5.4 - 5.4.23, 5.5 - 5.5.7
External links
https://lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html
https://bugzilla.kernel.org/show_bug.cgi?id=205711
https://security.netapp.com/advisory/ntap-20200103-0001/
https://usn.ubuntu.com/4344-1/
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.