CVE-2022-29824: debian debian_linux Integer Overflow or Wraparound

Vulnerability summary

CVE-2022-29824 is a medium (CVSS 6.5) Integer Overflow or Wraparound vulnerability in debian debian_linux. EPSS estimates a 3.75% chance of exploitation in the next 30 days, higher than 89.9% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 03-05-2022
   PublishedVulnerability first disclosed.
2. 14-10-2026
   Last modifiedVulnerability information updated.

Description

In libxml2 before 2.9.14, several buffer handling functions in buf.c (xmlBuf*) and tree.c (xmlBuffer*) don't check for integer overflows. This can result in out-of-bounds memory writes. Exploitation requires a victim to open a crafted, multi-gigabyte XML file. Other software using libxml2's buffer functions, for example libxslt through 1.1.35, is affected as well.

• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.