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kernel: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation

🗓️ 25 Feb 2026 19:01:32Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 6 Views

Memory corruption in Squashfs from wrong block size; attacker mounting and issuing ioctl may DoS.

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Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.0x86_64kernel-rt0:5.14.0-70.167.1.rt21.239.el9_0kernel-rt-0:5.14.0-70.167.1.rt21.239.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-core0:5.14.0-70.167.1.rt21.239.el9_0kernel-rt-core-0:5.14.0-70.167.1.rt21.239.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug0:5.14.0-70.167.1.rt21.239.el9_0kernel-rt-debug-0:5.14.0-70.167.1.rt21.239.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-core0:5.14.0-70.167.1.rt21.239.el9_0kernel-rt-debug-core-0:5.14.0-70.167.1.rt21.239.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-debuginfo0:5.14.0-70.167.1.rt21.239.el9_0kernel-rt-debug-debuginfo-0:5.14.0-70.167.1.rt21.239.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-devel0:5.14.0-70.167.1.rt21.239.el9_0kernel-rt-debug-devel-0:5.14.0-70.167.1.rt21.239.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-kvm0:5.14.0-70.167.1.rt21.239.el9_0kernel-rt-debug-kvm-0:5.14.0-70.167.1.rt21.239.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-modules0:5.14.0-70.167.1.rt21.239.el9_0kernel-rt-debug-modules-0:5.14.0-70.167.1.rt21.239.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-modules-extra0:5.14.0-70.167.1.rt21.239.el9_0kernel-rt-debug-modules-extra-0:5.14.0-70.167.1.rt21.239.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debuginfo0:5.14.0-70.167.1.rt21.239.el9_0kernel-rt-debuginfo-0:5.14.0-70.167.1.rt21.239.el9_0.x86_64.rpm
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30 Jun 2026 03:33Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.8
EPSS0.00181
SSVC
6