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kernel: race condition in VT_RESIZEX ioctl when vc_cons[i].d is already NULL leading to NULL pointer dereference

🗓️ 10 Oct 2023 16:31:57Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

Kernel race condition in virtual terminal resize can cause a null pointer dereference and system crash.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.6aarch64bpftool4.18.0-372.75.1.el8_6bpftool-4.18.0-372.75.1.el8_6.aarch64.rpm
Red Hat Enterprise Linux8.6ppc64lebpftool4.18.0-372.75.1.el8_6bpftool-4.18.0-372.75.1.el8_6.ppc64le.rpm
Red Hat Enterprise Linux8.6s390xbpftool4.18.0-372.75.1.el8_6bpftool-4.18.0-372.75.1.el8_6.s390x.rpm
Red Hat Enterprise Linux8.6x86_64bpftool4.18.0-372.75.1.el8_6bpftool-4.18.0-372.75.1.el8_6.x86_64.rpm
Red Hat Enterprise Linux8.6aarch64bpftool-debuginfo4.18.0-372.75.1.el8_6bpftool-debuginfo-4.18.0-372.75.1.el8_6.aarch64.rpm
Red Hat Enterprise Linux8.6ppc64lebpftool-debuginfo4.18.0-372.75.1.el8_6bpftool-debuginfo-4.18.0-372.75.1.el8_6.ppc64le.rpm
Red Hat Enterprise Linux8.6s390xbpftool-debuginfo4.18.0-372.75.1.el8_6bpftool-debuginfo-4.18.0-372.75.1.el8_6.s390x.rpm
Red Hat Enterprise Linux8.6x86_64bpftool-debuginfo4.18.0-372.75.1.el8_6bpftool-debuginfo-4.18.0-372.75.1.el8_6.x86_64.rpm
Red Hat Enterprise Linux8.6aarch64kernel4.18.0-372.75.1.el8_6kernel-4.18.0-372.75.1.el8_6.aarch64.rpm
Red Hat Enterprise Linux8.6ppc64lekernel4.18.0-372.75.1.el8_6kernel-4.18.0-372.75.1.el8_6.ppc64le.rpm
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02 Jul 2026 21:42Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.15.1
EPSS0.00306
4