The Git Smart Protocol support in libgit2 before 0.24.6 and 0.25.x before 0.25.1 allows remote attackers to cause a denial of service (NULL pointer dereference) via an empty packet line.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libgit2 | Libgit2_project | * | 0.24.5 (including) |
| Libgit2 | Libgit2_project | 0.25.0 (including) | 0.25.0 (including) |
| Libgit2 | Libgit2_project | 0.25.0-rc1 (including) | 0.25.0-rc1 (including) |
| Libgit2 | Libgit2_project | 0.25.0-rc2 (including) | 0.25.0-rc2 (including) |
| Libgit2 | Ubuntu | artful | * |
| Libgit2 | Ubuntu | esm-apps/xenial | * |
| Libgit2 | Ubuntu | esm-infra-legacy/trusty | * |
| Libgit2 | Ubuntu | trusty | * |
| Libgit2 | Ubuntu | trusty/esm | * |
| Libgit2 | Ubuntu | upstream | * |
| Libgit2 | Ubuntu | xenial | * |
| Libgit2 | Ubuntu | yakkety | * |
| Libgit2 | Ubuntu | zesty | * |