Description
The getgrouplist function in GNU libc (glibc) 2.2.4 and earlier allows attackers to cause a denial of service (segmentation fault) and execute arbitrary code when a user is a member of a large number of groups, which can cause a buffer overflow.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | glibc | 2.2.5 | — |
| Debian 13 | glibc | 2.2.5 | — |
| Debian 12 | glibc | 2.2.5 | — |
References
- RHSA-2003:249 vendor-advisory
- RHSA-2003:325 vendor-advisory