Description
Lrzip v0.651 was discovered to contain multiple invalid arithmetic shifts via the functions get_magic in lrzip.c and Predictor::init in libzpaq/libzpaq.cpp. These vulnerabilities allow attackers to cause a Denial of Service via unspecified vectors.
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 | lrzip | No fix yet | — |
| Debian 13 | lrzip | No fix yet | — |
| Debian 12 | lrzip | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | zpaq +1 | No fix yet | — |
| Ubuntu 26.04 LTS | zpaq +1 | No fix yet | — |
| Ubuntu 25.10 | zpaq +1 | No fix yet | — |
| Ubuntu 24.04 LTS | zpaq +1 | No fix yet | — |
| Ubuntu 22.04 LTS | zpaq +1 | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | zpaq +1 | No fix yet | — |
| Ubuntu 18.04 LTS | zpaq | No fix yet | — |
| Ubuntu 16.04 LTS | zpaq | No fix yet | — |
| Ubuntu Pro 18.04 LTS | lrzip | No fix yet | — |
| Ubuntu Pro 16.04 LTS | lrzip | No fix yet | — |
| Ubuntu Pro 14.04 LTS | lrzip | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | lrzip | 0.660-r0 | — |
| Alpine v3.23 | lrzip | 0.660-r0 | — |