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kernel: block: null pointer dereference in ioctl.c when length and logical block size are misaligned

🗓️ 07 Aug 2024 09:43:39Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 1 Views

Linux kernel block flaw causes NULL pointer dereference when partition size misaligns with logical block size.

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Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2024-519)
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Tenable Nessus		Debian dla-3842 : linux-config-5.10 - security update
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Tenable Nessus		Debian dsa-5681 : affs-modules-5.10.0-29-4kc-malta-di - security update
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Tenable Nessus		EulerOS 2.0 SP10 : kernel (EulerOS-SA-2024-1570)
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.2aarch64bpftool7.0.0-284.77.1.el9_2bpftool-7.0.0-284.77.1.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64lebpftool7.0.0-284.77.1.el9_2bpftool-7.0.0-284.77.1.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2s390xbpftool7.0.0-284.77.1.el9_2bpftool-7.0.0-284.77.1.el9_2.s390x.rpm
Red Hat Enterprise Linux9.2x86_64bpftool7.0.0-284.77.1.el9_2bpftool-7.0.0-284.77.1.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2aarch64bpftool-debuginfo7.0.0-284.77.1.el9_2bpftool-debuginfo-7.0.0-284.77.1.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64lebpftool-debuginfo7.0.0-284.77.1.el9_2bpftool-debuginfo-7.0.0-284.77.1.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2s390xbpftool-debuginfo7.0.0-284.77.1.el9_2bpftool-debuginfo-7.0.0-284.77.1.el9_2.s390x.rpm
Red Hat Enterprise Linux9.2x86_64bpftool-debuginfo7.0.0-284.77.1.el9_2bpftool-debuginfo-7.0.0-284.77.1.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2aarch64kernel5.14.0-284.77.1.el9_2kernel-5.14.0-284.77.1.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64lekernel5.14.0-284.77.1.el9_2kernel-5.14.0-284.77.1.el9_2.ppc64le.rpm
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28 Jun 2026 12:45Current
6.8Medium risk
Vulners AI Score6.8
CVSS 3.15.5
EPSS0.00231
SSVC
CWE-476
Linux kernelblock subsystemnull pointer dereferencepartition sizelogical block sizemisalignmentdenial of serviceprivileged attacker
1