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ALSA-2026:67285 — Important: rust security update

Affected: AlmaLinux:9: cargo, AlmaLinux:9: clippy, AlmaLinux:9: rust, AlmaLinux:9: rust-analyzer, AlmaLinux:9: rust-debugger-common, AlmaLinux:9: rust-doc, AlmaLinux:9: rust-gdb, AlmaLinux:9: rust-lldb, AlmaLinux:9: rust-src, AlmaLinux:9: rust-std-static and 4 more

Rust is a systems programming language that runs blazingly fast, prevents segfaults, and guarantees thread safety. This package includes the Rust compiler and documentation generator.

Security Fix(es):

* libgit2: libgit2: Denial of Service due to heap out-of-bounds read from malicious Git server (CVE-2026-53587)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2026-12652

BELL-CVE-2026-53587

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

EUVD-2026-357043

fkie_cve-2026-53587

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, libgit2 performs a fixed-size strncmp in set_data in src/libgit2/transports/smart_pkt.c without first verifying that the smart-protocol pkt-line capability buffer contains 14 bytes. A malicious Git server can make bytes after the pkt-line complete object-format=, causing format_str to advance beyond the pkt-line and the following memchr length calculation to underflow. The resulting heap out-of-bounds walk can crash a client during the first refs-advertisement packet over HTTP, HTTPS, SSH, or the Git protocol. This issue is fixed in versions 1.8.6 and 1.9.5.

openSUSE-SU-2026:11315-1 — libgit2-1_9-1.9.6-1.1 on GA media

libgit2-1_9-1.9.6-1.1 on GA media

RHSA-2026:59361 — Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

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

RLSA-2026:67285 — Important: rust security update

Affected: Rocky Linux:9: rust

Rust is a systems programming language that runs blazingly fast, prevents segfaults, and guarantees thread safety. This package includes the Rust compiler and documentation generator.

Security Fix(es):

* libgit2: libgit2: Denial of Service due to heap out-of-bounds read from malicious Git server (CVE-2026-53587)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

UBUNTU-CVE-2026-53587

Affected: Ubuntu:24.04:LTS: libgit2, Ubuntu:26.04:LTS: libgit2

WID-SEC-W-2026-3333 — Red Hat Enterprise Linux (libgit2): Schwachstelle ermöglicht Denial of Service

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen.