VDB
RHSA-2026:83540
RHSA-2026:83540
PUBLISHED
CVSS 7.300000190734863 HIGH
A flaw was found in the Linux kernel's PPPoE (Point-to-Point Protocol over Ethernet) implementation. This vulnerability occurs because a pointer to network packet data is not updated after memory is reallocated, leading to the use of an outdated memory address. An attacker with local access could potentially trigger this condition, causing memory corruption. This could result in a system crash (denial of service) or other unpredictable system behavior.
Risk Scores
CVSS 3.1
7.300000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | rhcos-x86_64-4.22.9.8.202610130742-0 as a component of Red Hat OpenShift Container Platform 4.22 | 4.22.9.8.202610130742-0 |
| Red Hat | rhcos-aarch64-4.22.9.8.202610130742-0 as a component of Red Hat OpenShift Container Platform 4.22 | 4.22.9.8.202610130742-0 |
| Red Hat | rhcos-s390x-4.22.9.8.202610130742-0 as a component of Red Hat OpenShift Container Platform 4.22 | 4.22.9.8.202610130742-0 |
| Red Hat | rhcos-ppc64le-4.22.9.8.202610130742-0 as a component of Red Hat OpenShift Container Platform 4.22 | 4.22.9.8.202610130742-0 |
Timeline
- Oct 20, 2026 CVE Published
- Oct 21, 2026 CVE Updated
- Oct 21, 2026 Distribution Patch
- Oct 21, 2026 Distribution Patch
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:83540 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2513233 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_83540.json advisory
- https://access.redhat.com/security/cve/CVE-2026-68121 advisory
- https://access.redhat.com/security/vulnerabilities/RHSB-2026-011 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-68121 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-68121 advisory
- https://lore.kernel.org/linux-cve-announce/2026081056-CVE-2026-68121-b20f@gregkh/T advisory