Use After Free vulnerability has been found in "io.c" program file of gawk (dogetlineredir() routine). This issue may lead to a crash. It affects gawk in versions 5.4.0 and below.

Integer overflow vulnerability has been found in "builtin.c" program file of gawk. This issue may lead to memory exhaustion on the hosting operating system and could be used to overwrite gawk heap metadata and objects with attacker-controlled bytes. It affects gawk in versions 5.4.0 and below.

Buffer overflow vulnerability has been found in "extension/readdir.c" program file of gawk (ftype() routine). This issue could be used to crash the program and potentially to achieve code execution, although the latter has not been confirmed to be feasible. It affects gawk in versions 5.4.0 and below.

Buffer overflow vulnerability has been found in "extension/readdir.c" program file of gawk (ftype() routine). This issue could be used to crash the program and potentially to achieve code execution, although the latter has not been confirmed to be feasible. It affects gawk in versions 5.4.0 and below.

Heap buffer overflow in gawk

A heap out of bound read issue exists in builtin.c of gawk prior to version 5.1.1. The array "theargs" takes an unsafe index "val", while it does not validate the index to ensure the index refers to a valid position in the array (e.g., exceedingly large or negative). The vulnerability can cause crash of the software and might be used by attackers to read sensitive information.

https://mail.gnu.org/archive/html/bug-gawk/2022-08/msg00000.html https://mail.gnu.org/archive/html/bug-gawk/2022-08/msg00023.html https://fossies.org/linux/gawk/ChangeLog#470 (Line: 470-475)