Vulnerability CVE-2018-14734
Published: 2018-07-29   Modified: 2018-07-30

Description:
drivers/infiniband/core/ucma.c in the Linux kernel through 4.17.11 allows ucma_leave_multicast to access a certain data structure after a cleanup step in ucma_process_join, which allows attackers to cause a denial of service (use-after-free).

Type:

CWE-416

 (Use After Free)

CVSS2 => (AV:L/AC:L/Au:N/C:P/I:P/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.1/10
8.5/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Complete
Affected software
Linux -> Linux kernel 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cb2595c1393b4a5211534e6f0a0fbad369e21ad8
https://access.redhat.com/errata/RHSA-2019:0831
https://github.com/torvalds/linux/commit/cb2595c1393b4a5211534e6f0a0fbad369e21ad8
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
https://usn.ubuntu.com/3797-1/
https://usn.ubuntu.com/3797-2/
https://usn.ubuntu.com/3847-1/
https://usn.ubuntu.com/3847-2/
https://usn.ubuntu.com/3847-3/
https://usn.ubuntu.com/3849-1/
https://usn.ubuntu.com/3849-2/
https://www.debian.org/security/2018/dsa-4308
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