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CVE-2026-98176

N/A

Published 2026-10-06 · Last modified 2026-10-19

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Avoid integer underflow with ffs in EOP ring size calc The low 6 bits of cp_hqd_eop_control store the base-2 logarithm of the EOP ring size. This was calculated as ffs(q->eop_ring_buffer_size / sizeof(unsigned int)) - 1 - 1 But ffs can in theory return 1 or 0, so this could underflow (although in practice the ring buffer size cannot be less than 4096). Change this to ffs(q->eop_ring_buffer_size / sizeof(unsigned int) / 4) using properties of logarithms. (cherry picked from commit 4f18c56630383c14bfc6b2d65f88f2f895d2121a)

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 5th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

—CVSS · not scored

  • No impact metrics

Proof of concept

No public PoC is currently catalogued.

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Data snapshot:

Affected

Vendors Linux

Products Linux

Weakness (CWE)

Not classified.

CVSS vector

Not yet scored.

References and research data (JSON)

Vendor product assessments

Showing 32 of 277 vendor product statements; 245 omitted. Read the full vendor advisory.

  • kernel as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-64k-modules-core as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-64k-modules-core

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-doc as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-doc

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-rt-64k-debug-modules-core as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-64k-debug-modules-core

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-rt-debug-modules-extra as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-debug-modules-extra

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-zfcpdump-devel as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-zfcpdump-devel

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-debug as a component of Red Hat Enterprise Linux 6 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-debug

    • no fix planned: Out of support scope
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-64k as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-64k

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-64k-modules as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-64k-modules

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-debug-modules-core as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-debug-modules-core

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-modules-internal as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-modules-internal

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-rt-64k-debug-modules-internal as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-64k-debug-modules-internal

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-debug-devel

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-rt-modules-extra as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-modules-extra

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-zfcpdump-devel-matched as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-zfcpdump-devel-matched

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · known affected

    Vendor assessment for this product only.

    pkg:oci/ose-rhel-coreos-9?repository_url=registry.redhat.io/openshift/ose-rhel-coreos-9

    • none available: Affected
    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • bpftool as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/bpftool

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-debug-devel as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-debug-devel

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-kdump-devel as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-kdump-devel

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-rt-devel as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-devel

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-rt-trace-kvm as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-trace-kvm

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel.src as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel?arch=src

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-abi-stablelists as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-abi-stablelists

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-debug-core as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-debug-core

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-doc as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-doc

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-modules-internal as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-modules-internal

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-debug-devel

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-rt-devel as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-devel

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-rt-selftests-internal as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-selftests-internal

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-tools-libs-devel as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-tools-libs-devel

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • kernel-zfcpdump-modules-extra as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-zfcpdump-modules-extra

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00
  • openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:oci/ose-rhel-coreos-8?repository_url=registry.redhat.io/openshift/ose-rhel-coreos-8

    Red Hat · CVE-2026-98176 · Updated 2026-10-08T12:06:30+00:00

References

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS