CVE-2026-40468
Published: July 16, 2026Last modified: July 21, 2026
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.1 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | gawk | Fixed (5.1.1-r2) |
| 25 LTS | gawk | Fixed (5.3.2-r3) | |
| Stream | gawk | Fixed (5.3.2-r3) | |
| Hardened Containers | 23 LTS | gawk | Fixed (5.1.1-r2) |
| 25 LTS | gawk | Fixed (5.3.2-r3) | |
| Stream | gawk | Fixed (5.3.2-r3) |