Description
mtr through 0.95, in certain privileged contexts, mishandles execution of a program specified by the MTR_PACKET environment variable. NOTE: mtr on macOS may often have Sudo rules, as an indirect consequence of Homebrew not installing setuid binaries.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| mtr | mtr | ≤ 0.95 | — |
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 | mtr | 0.96-1 | — |
| Debian 13 | mtr | No fix yet | — |
| Debian 12 | mtr | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | mtr | No fix yet | — |
| Ubuntu 25.10 | mtr | No fix yet | — |
| Ubuntu 24.04 LTS | mtr | No fix yet | — |
| Ubuntu 22.04 LTS | mtr | No fix yet | — |
| Ubuntu 20.04 LTS | mtr | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | mtr | No fix yet | — |
| Ubuntu 16.04 LTS | mtr | No fix yet | — |
| Ubuntu 14.04 LTS | mtr | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | mtr | 0.96-r0 | — |
| Alpine v3.23 | mtr | 0.96-r0 | — |
| Alpine v3.22 | mtr | 0.96-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | mtr +1 | 2:0.95-3.amzn2023.0.2 | ALAS2023-2025-1102 |
| Amazon Linux 2 | mtr +1 | 2:0.92-2.amzn2.0.2 | ALAS2-2025-2937 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | mtr | 0.95-3 | — |
| Azure Linux 2 (CBL-Mariner) | mtr | No fix yet | — |
Advisories 2
- ALAS2023-2025-1102 Important: mtr security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 8, 2025
- ALAS2-2025-2937 Important: mtr security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jul 30, 2025