VDB
RHSA-2026%3A0702
RHSA-2026%3A0702
PUBLISHED
CVSS 8.100000381469727 HIGH
A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.
Risk Scores
CVSS 3.1
8.100000381469727
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | rhcos-x86_64-417.94.202601120213-0 as a component of Red Hat OpenShift Container Platform 4.17 | rhcos-x86_64-417.94.202601120213-0, rhcos-x86_64-417.94.202601120213-0, * |
| Red Hat | rhcos-ppc64le-417.94.202601120213-0 as a component of Red Hat OpenShift Container Platform 4.17 | rhcos-ppc64le-417.94.202601120213-0, rhcos-ppc64le-417.94.202601120213-0, rhcos-ppc64le-417.94.202601120213-0 |
| Red Hat | rhcos-ppc64le-417.94.202601120213-0 as a component of Red Hat OpenShift Container Platform 4.17 | rhcos-ppc64le-417.94.202601120213-0, rhcos-ppc64le-417.94.202601120213-0, rhcos-ppc64le-417.94.202601120213-0 |
| Red Hat | rhcos-aarch64-417.94.202601120213-0 as a component of Red Hat OpenShift Container Platform 4.17 | *, *, rhcos-aarch64-417.94.202601120213-0 |
| Red Hat | rhcos-s390x-417.94.202601120213-0 as a component of Red Hat OpenShift Container Platform 4.17 | rhcos-s390x-417.94.202601120213-0, *, rhcos-s390x-417.94.202601120213-0 |
| Red Hat | rhcos-aarch64-417.94.202601120213-0 as a component of Red Hat OpenShift Container Platform 4.17 | *, rhcos-aarch64-417.94.202601120213-0, rhcos-aarch64-417.94.202601120213-0 |
| Red Hat | rhcos-s390x-417.94.202601120213-0 as a component of Red Hat OpenShift Container Platform 4.17 | rhcos-s390x-417.94.202601120213-0, rhcos-s390x-417.94.202601120213-0, rhcos-s390x-417.94.202601120213-0 |
| Red Hat | rhcos-x86_64-417.94.202601120213-0 as a component of Red Hat OpenShift Container Platform 4.17 | *, *, * |
Timeline
- Jan 22, 2026 CVE Published
- Apr 24, 2026 Distribution Patch
- Apr 24, 2026 Distribution Patch
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
- Apr 24, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:0702 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2376219 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2392605 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2395108 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2396054 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2401209 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2405827 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2405829 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2405830 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_0702.json advisory
- https://access.redhat.com/security/cve/CVE-2025-5987 advisory
- https://www.cve.org/CVERecord?id=CVE-2025-5987 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-5987 advisory
- https://www.libssh.org/security/advisories/CVE-2025-5987.txt advisory
- https://access.redhat.com/security/cve/CVE-2025-8677 advisory
- https://www.cve.org/CVERecord?id=CVE-2025-8677 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-8677 advisory
- https://access.redhat.com/security/cve/CVE-2025-9230 advisory
- https://www.cve.org/CVERecord?id=CVE-2025-9230 advisory
…and 20 more