Affected: Alpaquita:25: libgit2, Alpaquita:stream: libgit2

libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, git_delta_apply in src/libgit2/delta.c trusts the attacker-controlled res_sz value parsed by hdr_sz from a delta object header and passes that amount to git__malloc before validating delta instructions. Malicious pack data supplied through git_clone, git_fetch, git_remote_fetch, git_indexer_append, or a local attacker-supplied repository can use a very small multi-level OFS_DELTA chain to retain extremely large allocations and exhaust memory. This issue is fixed in versions 1.8.6 and 1.9.5.

libgit2-1_9-1.9.6-1.1 on GA media

libgit2: libgit2: Network attacker can intercept HTTPS connections via inverted IP SubjectAltName comparison libgit2: libgit2: Submodule path traversal allows arbitrary directory creation libgit2: libgit2: Denial of Service via Unbounded Memory Allocation libgit2: libgit2: Information disclosure via HTTP redirect allows credential leakage libgit2: libgit2: Denial of Service due to heap out-of-bounds read from malicious Git server

Affected: Ubuntu:Pro:14.04:LTS: libgit2, Ubuntu:Pro:16.04:LTS: libgit2, Ubuntu:Pro:18.04:LTS: libgit2, Ubuntu:Pro:20.04:LTS: libgit2, Ubuntu:Pro:22.04:LTS: libgit2, Ubuntu:24.04:LTS: libgit2, Ubuntu:26.04:LTS: libgit2

libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, git_delta_apply in src/libgit2/delta.c trusts the attacker-controlled res_sz value parsed by hdr_sz from a delta object header and passes that amount to git__malloc before validating delta instructions. Malicious pack data supplied through git_clone, git_fetch, git_remote_fetch, git_indexer_append, or a local attacker-supplied repository can use a very small multi-level OFS_DELTA chain to retain extremely large allocations and exhaust memory. This issue is fixed in versions 1.8.6 and 1.9.5.