Improper Input Validation Affecting rust-toolset-srpm-macros package, versions <0:1.97.0-2.amzn2023
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN2023-RUSTTOOLSETSRPMMACROS-18912031
- published18 Aug 2026
- disclosed20 Aug 2026
Introduced: 18 Aug 2026
NewCVE-2026-53587 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 rust-toolset-srpm-macros to version 0:1.97.0-2.amzn2023 or higher.
This issue was patched in ALAS2023-2026-2065.
NVD Description
Note: Versions mentioned in the description apply only to the upstream rust-toolset-srpm-macros package and not the rust-toolset-srpm-macros package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.
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.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-53587
- https://github.com/libgit2/libgit2/commit/2c0ce8c0132ac38ab0db28239462a671e2e5440e
- https://github.com/libgit2/libgit2/commit/affda60c10fcef16723451c0d7dc71b71dc20ad3
- https://github.com/libgit2/libgit2/commit/d7a9fb87f504434e9f45228678953c4fa56e7640
- https://github.com/libgit2/libgit2/releases/tag/v1.8.6
- https://github.com/libgit2/libgit2/releases/tag/v1.9.5
- https://github.com/libgit2/libgit2/security/advisories/GHSA-pm24-4jhq-3xvm