Description
decompress_gunzip.c in BusyBox through 1.32.1 mishandles the error bit on the huft_build result pointer, with a resultant invalid free or segmentation fault, via malformed gzip data.
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 | busybox | 1:1.35.0-1 | — |
| Debian 13 | busybox | 1:1.35.0-1 | — |
| Debian 12 | busybox | 1:1.35.0-1 | — |
| Debian 11 | busybox | 1:1.30.1-6+deb11u1 | DLA-4019-1 |
| Debian 9 | busybox | 1:1.22.0-19+deb9u2 | DLA-2614-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | busybox | 1:1.30.1-7ubuntu2 | — |
| Ubuntu 20.04 LTS | busybox | 1:1.30.1-4ubuntu6.4 | USN-5179-1 |
| Ubuntu 18.04 LTS | busybox | 1:1.27.2-2ubuntu3.4 | USN-5179-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | busybox | 1:1.27.2-2ubuntu3.4+esm1 | USN-6335-1 |
| Ubuntu Pro 16.04 LTS | busybox | 1:1.22.0-15ubuntu1.4+esm1 | USN-6335-1, USN-5179-2 |
| Ubuntu Pro 14.04 LTS | busybox | 1:1.21.0-1ubuntu1.4+esm1 | USN-6335-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | busybox | 1.35.0-150400.3.3.1 | SUSE-SU-2022:3959-1 |
| SLES 15 SP3 | busybox +1 | 1.26.2-4.5.1 | SUSE-SU-2022:0135-1, SUSE-SU-2021:3531-1 |
| SLES 15 SP2 | busybox +1 | 1.26.2-4.5.1 | SUSE-SU-2022:0135-1, SUSE-SU-2021:3531-1 |
| SLES 15 SP1 | busybox +1 | 1.26.2-4.5.1 | SUSE-SU-2022:0135-1, SUSE-SU-2021:3531-1 |
| SLES 15 | busybox | 1.26.2-4.5.1 | SUSE-SU-2022:0135-1, SUSE-SU-2021:3531-1 |
Show 20 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | busybox | 1.35.0-4.3.1 | SUSE-SU-2022:4253-1 |
| SLES 12 SP4 | busybox | 1.35.0-4.3.1 | SUSE-SU-2022:4253-1 |
| SLES 12 SP3 | busybox | 1.35.0-4.3.1 | SUSE-SU-2022:4253-1 |
| SLES 12 SP2 | busybox | 1.35.0-4.3.1 | SUSE-SU-2022:4253-1 |
| SLES for SAP 15 SP2 | busybox | 1.34.1-4.9.1 | SUSE-SU-2022:0135-1 |
| SLES for SAP 15 SP1 | busybox +1 | 1.26.2-4.5.1 | SUSE-SU-2022:0135-1, SUSE-SU-2021:3531-1 |
| SLES for SAP 15 | busybox | 1.26.2-4.5.1 | SUSE-SU-2022:0135-1, SUSE-SU-2021:3531-1 |
| SLES for SAP 12 SP5 | busybox | 1.35.0-4.3.1 | SUSE-SU-2022:4253-1 |
| SLES for SAP 12 SP4 | busybox | 1.35.0-4.3.1 | SUSE-SU-2022:4253-1 |
| SLE Real Time 15 SP2 | busybox | 1.34.1-4.9.1 | SUSE-SU-2022:0135-2 |
| SLE HPC 15 SP2 | busybox | 1.34.1-4.9.1 | SUSE-SU-2022:0135-1 |
| SLE HPC 15 SP1 | busybox +1 | 1.26.2-4.5.1 | SUSE-SU-2022:0135-1, SUSE-SU-2021:3531-1 |
| SLE HPC 15 | busybox | 1.26.2-4.5.1 | SUSE-SU-2022:0135-1, SUSE-SU-2021:3531-1 |
| SUSE OpenStack Cloud Crowbar 9 | busybox | 1.35.0-4.3.1 | SUSE-SU-2022:4253-1 |
| SUSE OpenStack Cloud 9 | busybox | 1.35.0-4.3.1 | SUSE-SU-2022:4253-1 |
| SUSE Manager Server 4.1 | busybox | 1.34.1-4.9.1 | SUSE-SU-2022:0135-1 |
| SUSE Manager Retail Branch Server 4.1 | busybox | 1.34.1-4.9.1 | SUSE-SU-2022:0135-1 |
| SUSE Manager Proxy 4.1 | busybox | 1.34.1-4.9.1 | SUSE-SU-2022:0135-1 |
| SUSE Enterprise Storage 7 | busybox | 1.34.1-4.9.1 | SUSE-SU-2022:0135-1 |
| SUSE Enterprise Storage 6 | busybox +1 | 1.26.2-4.5.1 | SUSE-SU-2022:0135-1, SUSE-SU-2021:3531-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | busybox | 1.35.0-1.1 | openSUSE-SU-2024:11738-1 |
| openSUSE Leap 15.4 | busybox | 1.35.0-150400.3.3.1 | SUSE-SU-2022:3959-1 |
| openSUSE Leap 15.3 | busybox +1 | 1.26.2-4.5.1 | openSUSE-SU-2022:0135-1, openSUSE-SU-2021:3531-1 |
| openSUSE Leap 15.3 | virtualbox | 6.1.34-lp153.2.27.2 | openSUSE-SU-2022:0135-1 |
| openSUSE Leap 15.3 | virtualbox-kmp | 6.1.34-lp153.2.27.1 | openSUSE-SU-2022:0135-1 |
| openSUSE Leap 15.2 | busybox +1 | 1.26.2-lp152.5.3.1 | openSUSE-SU-2021:1408-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | busybox | 1.33.0-r5 | — |
| Alpine v3.23 | busybox | 1.33.0-r5 | — |
| Alpine v3.22 | busybox | 1.33.0-r5 | — |
| Alpine v3.21 | busybox | 1.33.0-r5 | — |
| Alpine v3.20 | busybox | 1.33.0-r5 | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | busybox | 1.33.0-r5 | — |
| Alpine v3.18 | busybox | 1.33.0-r5 | — |
| Alpine v3.17 | busybox | 1.33.0-r5 | — |
| Alpine v3.16 | busybox | 1.33.0-r5 | — |
| Alpine v3.15 | busybox | 1.33.0-r5 | — |
| Alpine v3.14 | busybox | 1.33.0-r5 | — |
| Alpine v3.13 | busybox | 1.32.1-r4 | — |
| Alpine v3.12 | busybox | 1.31.1-r20 | — |
| Alpine v3.11 | busybox | 1.31.1-r10 | — |
| Alpine v3.10 | busybox | 1.30.1-r5 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | busybox | 1.32.0-2 | — |
Advisories 18
- USN-6335-1 busybox vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- USN-5179-2 busybox vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-2614-1 busybox - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4019-1 busybox - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-5179-1 busybox vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2021:3531-1 Security update for busybox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3959-1 Security update for busybox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0135-2 Security update for busybox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0135-1 Security update for busybox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0135-1 Security update for busybox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11738-1 busybox-1.35.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3531-1 Security update for busybox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4253-1 Security update for busybox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1408-1 Security update for busybox SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-2029 BusyBox: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · May 11, 2025
- ICSA-23-166-10 Siemens SIMATIC S7-1500 TM MFP BIOS CISA ICS & IT advisories · Apr 9, 2024
- SSA-831302 SSA-831302: Vulnerabilities in the BIOS of the SIMATIC S7-1500 TM MFP before V1.3.0 Siemens ProductCERT · Apr 9, 2024
- WID-SEC-2023-1432 Siemens SIMATIC S7: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 22, 2023
References
- https://git.busybox.net/busybox/commit/?id=f25d254dfd4243698c31a4f3153d4ac72aa9e9bd
- FEDORA-2021-e82915eee1 vendor-advisory
- FEDORA-2021-d20c8a4730 vendor-advisory
- FEDORA-2021-2024803354 vendor-advisory
- [debian-lts-announce] 20210401 [SECURITY] [DLA 2614-1] busybox security update mailing-list
- GLSA-202105-09 vendor-advisory