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Vulnerability DatabaseCVE-2023-52995
CVE-2023-52995:
Linux Debian vulnerability analysis and mitigation
Overview
In the Linux kernel, a vulnerability (CVE-2023-52995) was discovered in the RISC-V kprobe instruction simulation functionality. The issue specifically affects the JALR (Jump and Link Register) instruction simulation when setting kprobe at 'jalr 1140(ra)' of vfs_write (Kernel Git).
Technical details
The vulnerability occurs because when rs1 and rd are the same register (as in 'jalr 1140(ra)'), the instruction requires obtaining the target address from rs1 before updating rd. This incorrect handling leads to a crash with the error 'Unable to handle kernel access to user memory without uaccess routines' at virtual address 00aaaaaad77b1170 (NVD).
Impact
When triggered, this vulnerability results in a kernel crash, causing a system oops. This can lead to denial of service conditions in affected systems running the Linux kernel with RISC-V architecture (NVD).
Mitigation and workarounds
The vulnerability has been resolved in the Linux kernel through a patch that fixes the instruction simulation of JALR in the RISC-V kprobe implementation (Kernel Git).
Additional resources
Source: This report was generated using AI
Related Linux Debian vulnerabilities:
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