High severity7.5NVD Advisory· Published Mar 30, 2026· Updated Jun 10, 2026
CVE-2026-5121
CVE-2026-5121
Description
A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
35cpe:2.3:a:libarchive:libarchive:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:libarchive:libarchive:-:*:*:*:*:*:*:*
- (no CPE)
- cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- osv-coords26 versionspkg:apk/chainguard/libarchivepkg:apk/chainguard/libarchive-devpkg:apk/chainguard/libarchive-docpkg:apk/chainguard/libarchive-toolspkg:apk/wolfi/libarchivepkg:apk/wolfi/libarchive-devpkg:apk/wolfi/libarchive-docpkg:apk/wolfi/libarchive-toolspkg:rpm/almalinux/bsdtarpkg:rpm/almalinux/libarchivepkg:rpm/almalinux/libarchive-develpkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7pkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/libarchive&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6
< 3.8.7-r0+ 25 more
- (no CPE)range: < 3.8.7-r0
- (no CPE)range: < 3.8.7-r0
- (no CPE)range: < 3.8.7-r0
- (no CPE)range: < 3.8.7-r0
- (no CPE)range: < 3.8.7-r0
- (no CPE)range: < 3.8.7-r0
- (no CPE)range: < 3.8.7-r0
- (no CPE)range: < 3.8.7-r0
- (no CPE)range: < 3.5.3-9.el9_7
- (no CPE)range: < 3.5.3-9.el9_7
- (no CPE)range: < 3.5.3-9.el9_7
- (no CPE)range: < 3.5.1-150400.3.24.1
- (no CPE)range: < 3.5.1-150400.3.24.1
- (no CPE)range: < 3.5.1-150400.3.24.1
- (no CPE)range: < 3.5.1-150400.3.24.1
- (no CPE)range: < 3.5.1-150400.3.24.1
- (no CPE)range: < 3.5.1-150400.3.24.1
- (no CPE)range: < 3.5.1-150400.3.24.1
- (no CPE)range: < 3.7.2-150600.3.20.1
- (no CPE)range: < 3.7.2-150600.3.20.1
- (no CPE)range: < 3.5.1-150400.3.24.1
- (no CPE)range: < 3.5.1-150400.3.24.1
- (no CPE)range: < 3.7.2-150600.3.20.1
- (no CPE)range: < 3.5.1-150400.3.24.1
- (no CPE)range: < 3.5.1-150400.3.24.1
- (no CPE)range: < 3.7.2-150600.3.20.1
Patches
Vulnerability mechanics
References
36- github.com/libarchive/libarchive/pull/2934nvdIssue TrackingPatch
- access.redhat.com/security/cve/CVE-2026-5121nvdThird Party Advisory
- github.com/advisories/GHSA-2vwv-vqpv-v8vcnvdThird Party Advisory
- access.redhat.com/errata/RHSA-2026:10065nvd
- access.redhat.com/errata/RHSA-2026:10097nvd
- access.redhat.com/errata/RHSA-2026:11768nvd
- access.redhat.com/errata/RHSA-2026:12071nvd
- access.redhat.com/errata/RHSA-2026:12274nvd
- access.redhat.com/errata/RHSA-2026:13812nvd
- access.redhat.com/errata/RHSA-2026:14773nvd
- access.redhat.com/errata/RHSA-2026:14937nvd
- access.redhat.com/errata/RHSA-2026:15087nvd
- access.redhat.com/errata/RHSA-2026:16008nvd
- access.redhat.com/errata/RHSA-2026:16009nvd
- access.redhat.com/errata/RHSA-2026:16030nvd
- access.redhat.com/errata/RHSA-2026:16174nvd
- access.redhat.com/errata/RHSA-2026:17596nvd
- access.redhat.com/errata/RHSA-2026:19724nvd
- access.redhat.com/errata/RHSA-2026:19725nvd
- access.redhat.com/errata/RHSA-2026:20040nvd
- access.redhat.com/errata/RHSA-2026:21690nvd
- access.redhat.com/errata/RHSA-2026:25096nvd
- access.redhat.com/errata/RHSA-2026:8510nvd
- access.redhat.com/errata/RHSA-2026:8517nvd
- access.redhat.com/errata/RHSA-2026:8521nvd
- access.redhat.com/errata/RHSA-2026:8534nvd
- access.redhat.com/errata/RHSA-2026:8864nvd
- access.redhat.com/errata/RHSA-2026:8866nvd
- access.redhat.com/errata/RHSA-2026:8867nvd
- access.redhat.com/errata/RHSA-2026:8873nvd
- access.redhat.com/errata/RHSA-2026:8908nvd
- access.redhat.com/errata/RHSA-2026:8944nvd
- access.redhat.com/errata/RHSA-2026:9026nvd
- access.redhat.com/errata/RHSA-2026:9592nvd
- access.redhat.com/errata/RHSA-2026:9832nvd
- bugzilla.redhat.com/show_bug.cginvd
News mentions
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