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kernel: sctp: avoid NULL dereference when chunk data buffer is missing

🗓️ 12 Jan 2026 02:42:33Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 13 Views

Stream Control Transmission Protocol fix for NULL dereference when chunk data buffer is missing via frag_list check.

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Refs
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nessus
Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-1297)
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nessus
Tenable Nessus		Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1495)
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Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2026-112 (ALASKERNEL-5.10-2026-112)
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nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2025-094 (ALASKERNEL-5.15-2025-094)
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nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2025-114 (ALASKERNEL-5.4-2025-114)
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Tenable Nessus		AlmaLinux 8 : kernel-rt (ALSA-2026:0443)
19 Jan 202600:00
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nessus
Tenable Nessus		AlmaLinux 8 : kernel (ALSA-2026:0444)
19 Jan 202600:00
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nessus
Tenable Nessus		AlmaLinux 9 : kernel (ALSA-2026:0445)
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nessus
Tenable Nessus		AlmaLinux 10 : kernel (ALSA-2026:0453)
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Red Hat Enterprise Linux8.10x86_64kernel-rt4.18.0-553.92.1.rt7.433.el8_10kernel-rt-4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm
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Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-devel4.18.0-553.92.1.rt7.433.el8_10kernel-rt-debug-devel-4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-kvm4.18.0-553.92.1.rt7.433.el8_10kernel-rt-debug-kvm-4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm
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Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-modules-extra4.18.0-553.92.1.rt7.433.el8_10kernel-rt-debug-modules-extra-4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debuginfo4.18.0-553.92.1.rt7.433.el8_10kernel-rt-debuginfo-4.18.0-553.92.1.rt7.433.el8_10.x86_64.rpm
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30 Jun 2026 03:32Current
5.8Medium risk
Vulners AI Score5.8
EPSS0.00188
SSVC
CWE-476
linux kernelnull dereferencechunk data missingfrag list checkskb replacement
13