DOS / potential heap overwrite in mkv demuxing using bzip decompression. Integer overflow in matroskademux element in bzip decompression function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlying OS capabilities, it could be just a segfault or a heap overwrite. If the libc uses mmap for large chunks, and the OS supports mmap, then it is just a segfault (because the realloc before the integer overflow will use mremap to reduce the size of the chunk, and it will start to write to unmapped memory). However, if using a libc implementation that does not use mmap, or if the OS does not support mmap while using libc, then this could result in a heap overwrite.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/1xxx/CVE-2022-1923.json",
"cwe_ids": [
"CWE-122"
],
"cna_assigner": "redhat"
}{
"source": "CPE_FIELD",
"cpe": "cpe:2.3:a:gstreamer:gstreamer:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "1.20.3"
}
]
}