Perl Out-of-bounds Write Vulnerability - CVE-2024-56406

A heap buffer overflow vulnerability was discovered in Perl. Release branches 5.34 5.36 5.38 and 5.40 are affected including development versions from 5.33.1 through 5.41.10. When there are non-ASCII bytes in the left-hand-side of the tr operator S_do_trans_invmap can overflow the destination pointer d. perl -e 39_ quotxFFquot x 1000000 tr/xFF/x100/39 Segmentation fault (core dumped) It is believed that this vulnerability can enable Denial of Service and possibly Code Execution attacks on platforms that lack sufficient defenses.