In libarchive before 3.6.2, the software does not check for an error after calling calloc function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference. NOTE: the discoverer cites this CWE-476 remark but third parties dispute the code-execution impact: "In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution."

Affected: Ubuntu:Pro:14.04:LTS: libarchive, Ubuntu:Pro:16.04:LTS: libarchive, Ubuntu:Pro:18.04:LTS: libarchive, Ubuntu:20.04:LTS: libarchive, Ubuntu:22.04:LTS: libarchive, Ubuntu:24.04:LTS: libarchive

It was discovered that libarchive mishandled certain memory checks, which could result in a NULL pointer dereference. An attacker could potentially use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-36227)

It was discovered that libarchive mishandled certain memory operations, which could result in an out-of-bounds memory access. An attacker could potentially use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-48957, CVE-2024-48958)