Description
Stack overflow vulnerability in ast_selectors.cpp: in function Sass::ComplexSelector::has_placeholder in libsass:3.6.5-8-g210218, which can be exploited by attackers to cause a denial of service (DoS).
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 | libsass | 3.6.5+20231221-2 | — |
| Debian 13 | libsass | 3.6.5+20231221-2 | — |
| Debian 12 | libsass | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | libsass | No fix yet | — |
| Ubuntu 20.04 LTS | libsass | No fix yet | — |
| Ubuntu 16.04 LTS | libsass | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | libsass | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | libsass | 3.6.5-150200.4.10.1 | SUSE-SU-2023:4895-1 |
| SLES 15 SP4 | libsass | 3.6.5-150200.4.10.1 | SUSE-SU-2023:4895-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libsass | 3.6.5-2.1 | openSUSE-SU-2024:13516-1 |
| openSUSE Leap 15.5 | libsass | 3.6.5-150200.4.10.1 | SUSE-SU-2023:4895-1 |
| openSUSE Leap 15.4 | libsass | 3.6.5-150200.4.10.1 | SUSE-SU-2023:4895-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libsass | 3.6.6-r0 | — |
| Alpine v3.23 | libsass | 3.6.6-r0 | — |
| Alpine v3.22 | libsass | 3.6.6-r0 | — |
| Alpine v3.21 | libsass | 3.6.6-r0 | — |
| Alpine v3.20 | libsass | 3.6.6-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libsass | 3.6.6-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | libsass | 3.6.6-1 | — |
| Azure Linux 2 (CBL-Mariner) | libsass | No fix yet | — |
Advisories 2
- openSUSE-SU-2024:13516-1 libsass-3_6_5-1-3.6.5-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4895-1 Security update for libsass SUSE / openSUSE Security Updates · Feb 4, 2026