VDB
RHSA-2026:77215
RHSA-2026:77215
PUBLISHED
CVSS 7.800000190734863 HIGH
A flaw was found in the Linux kernel's Remote Direct Memory Access (RDMA) subsystem. A divide-by-zero error can occur within the Dynamic Interrupt Moderation (DIM) mechanism when comparing statistics that evaluate to a zero value. A local attacker can trigger this issue during network operations to crash the system, resulting in a Denial of Service (DoS).
Risk Scores
CVSS 3.1
7.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | bpftool-0:7.0.0-284.195.1.el9_2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:7.0.0-284.195.1.el9_2 |
| Red Hat | kernel-debug-debuginfo-0:5.14.0-284.195.1.el9_2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-tools-debuginfo-0:5.14.0-284.195.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-64k-debug-devel-0:5.14.0-284.195.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-debug-core-0:5.14.0-284.195.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-tools-debuginfo-0:5.14.0-284.195.1.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-64k-core-0:5.14.0-284.195.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | perf-debuginfo-0:5.14.0-284.195.1.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | python3-perf-0:5.14.0-284.195.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-tools-debuginfo-0:5.14.0-284.195.1.el9_2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-modules-0:5.14.0-284.195.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-tools-0:5.14.0-284.195.1.el9_2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-modules-extra-0:5.14.0-284.195.1.el9_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-debug-devel-matched-0:5.14.0-284.195.1.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-zfcpdump-modules-0:5.14.0-284.195.1.el9_2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-64k-devel-matched-0:5.14.0-284.195.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-debug-modules-extra-0:5.14.0-284.195.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | bpftool-debuginfo-0:7.0.0-284.195.1.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2) | 0:7.0.0-284.195.1.el9_2 |
| Red Hat | kernel-debug-modules-extra-0:5.14.0-284.195.1.el9_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
| Red Hat | kernel-64k-debuginfo-0:5.14.0-284.195.1.el9_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.2) | 0:5.14.0-284.195.1.el9_2 |
…and 147 more
Timeline
- Oct 7, 2026 CVE Published
- Oct 19, 2026 CVE Updated
- Oct 19, 2026 Distribution Patch
- Oct 19, 2026 Distribution Patch
- Oct 19, 2026 Security Advisory
- Oct 19, 2026 Security Advisory
- Oct 19, 2026 Security Advisory
- Oct 19, 2026 Security Advisory
- Oct 19, 2026 Security Advisory
- Oct 19, 2026 Security Advisory
- Oct 19, 2026 Security Advisory
- Oct 19, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:77215 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2347919 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2461471 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2482614 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2492095 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2492329 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2492390 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2492735 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2502872 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2513353 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2524483 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_77215.json advisory
- https://access.redhat.com/security/cve/CVE-2022-49670 advisory
- https://www.cve.org/CVERecord?id=CVE-2022-49670 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2022-49670 advisory
- https://lore.kernel.org/linux-cve-announce/2025022623-CVE-2022-49670-0b7b@gregkh/T advisory
- https://access.redhat.com/security/cve/CVE-2026-31581 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-31581 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-31581 advisory
…and 33 more