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CVE-2026-98130

HIGH 8.1

Published 2026-09-25 · Last modified 2026-10-19

In the Linux kernel, the following vulnerability has been resolved: sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START The SCTP_CMD_TIMER_START handler checks timer_pending() before calling timer_reduce(). The timer can expire and detach between these operations, causing timer_reduce() to rearm the timer without taking the association reference required for the newly armed timer. The timer callback later unconditionally drops its association reference, which can leave the association reference count unbalanced and result in use-after-free during association teardown. Use the return value of timer_reduce() to determine whether the timer was actually armed. Take the association reference only when timer_reduce() successfully starts a new timer, closing the race between checking the timer state and rearming it. This issue was reported by Nico Yip (@_cyeaa_) working with TrendAI Zero Day Initiative.

ELEVATED IMPACT

Severe if exploited (CVSS 8.1), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

0.5%chance of exploitation in 30 days · 39th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

8.1CVSS 3.1 · HIGH

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityHigh

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ✓User interaction: No user interaction needed
  • ⚠Complexity: Needs a race window or specific setup

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Linux

Products Linux Linux Kernel

Weakness (CWE)

  • CWE-362: Race condition

CVSS vector

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

References and research data (JSON)

Vendor product assessments

Showing 32 of 276 vendor product statements; 244 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-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-64k-debug-modules-extra as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

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

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-debug-core as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-debug-core

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+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-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-rt-64k-debug as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

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

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-rt-64k-modules-extra as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

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

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-rt-devel as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-devel

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-uki-virt-addons as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-uki-virt-addons

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • libperf as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/libperf

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-debug-devel as a component of Red Hat Enterprise Linux 6 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-debug-devel

    • no fix planned: Out of support scope
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • python-perf as a component of Red Hat Enterprise Linux 6 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/python-perf

    • no fix planned: Out of support scope
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-headers as a component of Red Hat Enterprise Linux 7 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-headers

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-rt-doc as a component of Red Hat Enterprise Linux 7 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-doc

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel.src as a component of Red Hat Enterprise Linux 7 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel?arch=src

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-debug as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-debug

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-ipaclones-internal as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-ipaclones-internal

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-rt-debug-kvm as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

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

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-rt-selftests-internal as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

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

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-zfcpdump-modules as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-zfcpdump-modules

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-64k-core as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

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

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-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-64k-debug-modules-internal

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-abi-stablelists as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-abi-stablelists

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-debug-modules-extra as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

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

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-ipaclones-internal as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-ipaclones-internal

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-rt-64k-debug as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

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

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-rt-64k-debug-modules-partner 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-partner

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-rt-core as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-core

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-rt-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-debug-modules-internal

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-rt-modules-internal as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

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

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-uki-virt-addons as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-uki-virt-addons

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+00:00
  • kernel-zfcpdump-modules-partner as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

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

    • none available: Affected
    Red Hat · CVE-2026-98130 · Updated 2026-09-28T15:03:09+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-2026-98130 · Updated 2026-09-28T15:03:09+00:00

Known Affected Software Configurations

VendorProductVersion range
LinuxLinux Kernel≥ 4.19.126 and < 4.20
LinuxLinux Kernel≥ 5.4.44 and < 5.5
LinuxLinux Kernel≥ 5.6.16 and < 5.7
LinuxLinux Kernel≥ 5.7.1 and < 5.10.271
LinuxLinux Kernel≥ 5.11 and < 5.15.222
LinuxLinux Kernel≥ 5.16 and < 6.1.189
LinuxLinux Kernel≥ 6.2 and < 6.6.158
LinuxLinux Kernel≥ 6.7 and < 6.12.111
LinuxLinux Kernel≥ 6.13 and < 6.18.53
LinuxLinux Kernel≥ 6.19 and < 7.2.7
LinuxLinux Kernel5.7
LinuxLinux Kernel5.7
LinuxLinux Kernel7.3

All CVSS metrics

  • HIGH 8.1 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • HIGH 8.1 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Patches & mitigations

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS