RHSA-2026:49361MediumCVSS 4.4
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
🔗 CVE IDs covered (1)
📋 Description
CVE-2026-18477 — tar: tar: TOCTOU in incremental dumpdir 'X' rename handling allows restore path escape
🎯 Affected products4
- Red Hat Hardened Images
- tar-main@aarch64 as a component of Red Hat Hardened Images
- tar-main@src as a component of Red Hat Hardened Images
- tar-main@x86_64 as a component of Red Hat Hardened Images
✅ Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Workaround: Do not perform incremental restores (-G/-g) from untrusted archives. Avoid restoring incremental backups on systems where untrusted users have shell access, perform restoration only on systems inaccessible to users.
🔗 References (5)
- selfhttps://access.redhat.com/errata/RHSA-2026:49361
- externalhttps://access.redhat.com/security/cve/CVE-2026-18477
- externalhttps://access.redhat.com/security/updates/classification/
- externalhttps://images.redhat.com/
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_49361.json