Vulnerability Name:

CCN-112870

Published:2016-04-27
Updated:2016-04-27
Summary:Linux Kernel is vulnerable to a buffer overflow, caused by improper bounds checking by reference counters when RLIMIT_MEMLOCK is disabled. By sending an overly long string, a local attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS v3 Severity:5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
5.3 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Consequences:Gain Access
References:Source: CCN
Type: Google Security Research Issue 809
Linux: reference count overflow using BPF maps

Source: XF
Type: UNKNOWN
linux-kernel-reference-bo(112870)

Source: CCN
Type: Linux Kernel GIT Repository
bpf: fix refcnt overflow

Source: CCN
Type: Packet Storm Security [05-03-2016]
Linux BPF Maps Reference Count Overflow

Source: EXPLOIT-DB
Type: EXPLOIT
Offensive Security Exploit Database [05-04-2016]

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    linux linux kernel *