CVE-2026-53585
CVE-2026-53585: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium6.5
Medium [CVE-2026-53585] Denial of Service via Unbounded Memory Allocation
CVE-2026-53585Source published Source updated
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. A flaw was found in libgit2. The `git_delta_apply` function incorrectly trusts an attacker-controlled…
- Affected products in this advisory
- Red Hat Hardened Images
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
3 more entries in the full advisory.
- Source-reported affected versions
- < 1.8.6
- < 1.9.5
- Source-reported fixed versions
- 1.8.6
- 1.9.5
- libgit2-main-1.9.7-1.hum1
- RHSA-2026:59361
- Mitigation guidance
- To mitigate this issue, avoid cloning or fetching from untrusted Git repositories. Restricting access to systems that perform Git operations on untrusted data can also reduce exposure.
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