Headline
CVE-2022-36227: There is a NULL pointer dereference vulnerability · Issue #1754 · libarchive/libarchive
In libarchive 3.6.1, 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 or, in some cases, even arbitrary code execution.
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 or, in some cases, even arbitrary code execution.
f = calloc(1, sizeof(*f));
f->archive = _a;
f->state = ARCHIVE_WRITE_FILTER_STATE_NEW;
/*
* Allocate and return the next filter structure.
*/
struct archive_write_filter *
__archive_write_allocate_filter(struct archive *_a)
{
struct archive_write *a = (struct archive_write *)_a;
struct archive_write_filter *f;
f = calloc(1, sizeof(*f));
f->archive = _a;
f->state = ARCHIVE_WRITE_FILTER_STATE_NEW;
if (a->filter_first == NULL)
a->filter_first = f;
else
a->filter_last->next_filter = f;
a->filter_last = f;
return f;
}Related news
Ubuntu Security Notice 7070-1 - 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. 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.
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