VDB

RHSA-2026:87091

RHSA-2026:87091 PUBLISHED CVSS 8.800000190734863 HIGH

A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during packet handling, potentially leading to arbitrary code execution on the host, a system crash resulting in Denial of Service (DoS), or information disclosure of sensitive memory.

Risk Scores

CVSS 3.1
8.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected Products

VendorProductVersions
Red Hatperf-debuginfo-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-modules-extra-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-debuginfo-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-debug-modules-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)4.18.0-305.215.1.el8
Red Hatbpftool-debuginfo-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-abi-stablelists-0:4.18.0-305.215.1.el8_4.noarch as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)4.18.0-305.215.1.el8
Red Hatpython3-perf-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-debuginfo-common-x86_64-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-tools-debuginfo-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-devel-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-debug-modules-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-debug-core-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-0:4.18.0-305.215.1.el8_4.src as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-modules-extra-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-debuginfo-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-tools-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-debug-debuginfo-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-tools-libs-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)4.18.0-305.215.1.el8
Red Hatkernel-debuginfo-common-x86_64-0:4.18.0-305.215.1.el8_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)4.18.0-305.215.1.el8

…and 30 more

Timeline

  • Oct 21, 2026 CVE Published
  • Oct 22, 2026 CVE Updated
  • Oct 22, 2026 Distribution Patch
  • Oct 22, 2026 Distribution Patch
  • Oct 22, 2026 Security Advisory
  • Oct 22, 2026 Security Advisory

References

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