CVE-2014-2568: canonical ubuntu_linux Use After Free

Vulnerability summary

CVE-2014-2568 is a low (CVSS 2.9) Use After Free vulnerability in canonical ubuntu_linux. EPSS estimates a 1.01% chance of exploitation in the next 30 days, higher than 63.3% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 24-03-2014
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

Use-after-free vulnerability in the nfqnl_zcopy function in net/netfilter/nfnetlink_queue_core.c in the Linux kernel through 3.13.6 allows attackers to obtain sensitive information from kernel memory by leveraging the absence of a certain orphaning operation. NOTE: the affected code was moved to the skb_zerocopy function in net/core/skbuff.c before the vulnerability was announced.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.