Description
A use-after-free in Busybox 1.35-x's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the copyvar function.
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 | 1:1.36.1-1 | — |
| Debian 13 | busybox | 1:1.36.1-1 | — |
| Debian 12 | busybox | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | busybox | 1.35.0-150400.3.8.1 | SUSE-SU-2022:4371-1 |
| SLES 15 SP3 | busybox | 1.35.0-150000.4.17.1 | SUSE-SU-2022:4309-1 |
| SLES 12 SP5 | busybox | 1.35.0-4.6.2 | SUSE-SU-2022:4372-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | busybox | 1.35.0-4.6.2 | SUSE-SU-2022:4372-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | busybox | 1.35.0-9.1 | openSUSE-SU-2024:12536-1 |
| openSUSE Leap 15.4 | busybox | 1.35.0-150400.3.8.1 | SUSE-SU-2022:4371-1 |
| openSUSE Leap 15.4 | busybox-links | 1.35.0-150400.4.3.14 | SUSE-SU-2022:4371-1 |
| openSUSE Leap 15.3 | busybox | 1.35.0-150000.4.17.1 | SUSE-SU-2022:4309-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | busybox | 1.35.0-r17 | — |
| Alpine v3.23 | busybox | 1.35.0-r17 | — |
| Alpine v3.22 | busybox | 1.35.0-r17 | — |
| Alpine v3.21 | busybox | 1.35.0-r17 | — |
| Alpine v3.20 | busybox | 1.35.0-r17 | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | busybox | 1.35.0-r17 | — |
| Alpine v3.18 | busybox | 1.35.0-r17 | — |
| Alpine v3.17 | busybox | 1.35.0-r17 | — |
| Alpine v3.16 | busybox | 1.35.0-r15 | — |
| Alpine v3.15 | busybox | 1.34.0-r6 | — |
| Alpine v3.14 | busybox | 1.33.0-r8 | — |
| Alpine v3.13 | busybox | 1.32.1-r9 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | busybox | 1.35.0-3 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | busybox | 1.35.0-r3 | — |
Advisories 15
- SUSE-SU-2022:4371-1 Security update for busybox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4309-1 Security update for busybox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4372-1 Security update for busybox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12536-1 busybox-1.35.0-9.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- VDE-2023-001 PHOENIX CONTACT: Multiple Vulnerabilities in PLCnext Firmware CERT@VDE · Jun 5, 2025
- ICSA-23-103-09 Siemens SCALANCE XCM332 CISA ICS & IT advisories · May 6, 2025
- WID-SEC-2022-2211 BusyBox: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · May 13, 2024
- 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
- SSA-558014 SSA-558014: Third-Party Component Vulnerabilities in SCALANCE XCM332 before V2.2 Siemens ProductCERT · Apr 11, 2023
- ICSA-23-075-01 Siemens SCALANCE, RUGGEDCOM Third-Party CISA ICS & IT advisories · Mar 14, 2023
- SSA-419740 SSA-419740: Multiple Third-Party Component Vulnerabilities in RUGGEDCOM and SCALANCE Products before V7.2 Siemens ProductCERT · Mar 14, 2023
- SSA-333517 SSA-333517: Multiple Vulnerabilities in SCALANCE SC-600 Family before V3.0 Siemens ProductCERT · Dec 13, 2022
- ICSA-22-349-18 Siemens SCALANCE SC-600 Family CISA ICS & IT advisories · Dec 13, 2022