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CVE-2023-52922 is a use-after-free vulnerability in the Linux kernel CAN Broadcast Manager subsystem, in bcm_proc_show() within net/can/bcm.c. The flaw is caused by a race in which bcm_release() frees bcm_op objects before the associated procfs entry is removed, allowing bcm_proc_show() to traverse and read a freed bcm_op while procfs output is being generated. KASAN reported the issue as a slab-use-after-free. The bug affects kernel versions from 2.6.25 until the respective fixed releases in supported branches.
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A Linux kernel CAN BCM vulnerability involving a use-after-free in bcm_proc_show().
Use-after-free no subsistema CAN BCM do kernel Linux, em bcm_proc_show(), que permite a usuários não privilegiados ler dados do espaço do kernel via entradas /proc, facilitando divulgação de informações e bypass de mitigações de segurança.
A Linux kernel CAN BCM subsystem use-after-free information disclosure vulnerability in bcm_proc_show(), affecting RHEL 9 and upstream Linux, allowing unprivileged users with user and net namespaces plus a CAN interface to read kernel memory and leak information useful for bypassing mitigations.
A Linux kernel use-after-free vulnerability in the CAN BCM subsystem's bcm_proc_show() path, caused by bcm_op being freed before the procfs entry is removed, allowing bcm_proc_show() to access freed memory.
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Every observed campaign linking this CVE to a named adversary.
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YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
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