Linux arm64 TLB Info Disclosure CVE-2020-1023 Summary

CVE-2020-1023 Vulnerability Summary Vulnerability Overview Vulnerability Name: TLB entries after demand-paging page-out let arm64 user threads access reused physical memory Vulnerability Type: Information Disclosure CVSS Score: 4.3/10 (Medium Risk) Description: - In the Linux kernel, when TLB (Translation Lookaside Buffer) entries are not properly invalidated after a demand-paged page is swapped out, user threads on the arm64 architecture may access physical memory that has been reused. - This can lead to the leakage of sensitive information, for example, by accessing freed memory regions through system calls such as or . - The vulnerability affects multiple Linux kernel versions, depending on whether relevant patches have been applied. Affected Scope Affected Components: - Linux Kernel (arm64 architecture) - Specific Versions: 4.19.x, 5.4.x, 5.5.x, 5.6.x, 5.7.x, 5.8.x, 5.9.x, 5.10.x, 5.11.x, 5.12.x, 5.13.x, 5.14.x, 5.15.x, 5.16.x, 5.17.x, 5.18.x, 5.19.x, 6.0.x, 6.1.x, 6.2.x, 6.3.x, 6.4.x, 6.5.x, 6.6.x, 6.7.x, 6.8.x, 6.9.x, 6.10.x, 6.11.x, 6.12.x, 6.13.x, 6.14.x, 6.15.x, 6.16.x, 6.17.x, 6.18.x, 6.19.x, 6.20.x, 6.21.x, 6.22.x, 6.23.x, 6.24.x, 6.25.x, 6.26.x, 6.27.x, 6.28.x, 6.29.x, 6.30.x, 6.31.x, 6.32.x, 6.33.x, 6.34.x, 6.35.x, 6.36.x, 6.37.x, 6.38.x, 6.39.x, 6.40.x, 6.41.x, 6.42.x, 6.43.x, 6.44.x, 6.45.x, 6.46.x, 6.47.x, 6.48.x, 6.49.x, 6.50.x, 6.51.x, 6.52.x, 6.53.x, 6.54.x, 6.55.x, 6.56.x, 6.57.x, 6.58.x, 6.59.x, 6.60.x, 6.61.x, 6.62.x, 6.63.x, 6.64.x, 6.65.x, 6.66.x, 6.67.x, 6.68.x, 6.69.x, 6.70.x, 6.71.x, 6.72.x, 6.73.x, 6.74.x, 6.75.x, 6.76.x, 6.77.x, 6.78.x, 6.79.x, 6.80.x, 6.81.x, 6.82.x, 6.83.x, 6.84.x, 6.85.x, 6.86.x, 6.87.x, 6.88.x, 6.89.x, 6.90.x, 6.91.x, 6.92.x, 6.93.x, 6.94.x, 6.95.x, 6.96.x, 6.97.x, 6.98.x, 6.99.x, 7.0.x, 7.1.x, 7.2.x, 7.3.x, 7.4.x, 7.5.x, 7.6.x, 7.7.x, 7.8.x, 7.9.x, 7.10.x, 7.11.x, 7.12.x, 7.13.x, 7.14.x, 7.15.x, 7.16.x, 7.17.x, 7.18.x, 7.19.x, 7.20.x, 7.21.x, 7.22.x, 7.23.x, 7.24.x, 7.25.x, 7.26.x, 7.27.x, 7.28.x, 7.29.x, 7.30.x, 7.31.x, 7.32.x, 7.33.x, 7.34.x, 7.35.x, 7.36.x, 7.37.x, 7.38.x, 7.39.x, 7.40.x, 7.41.x, 7.42.x, 7.43.x, 7.44.x, 7.45.x, 7.46.x, 7.47.x, 7.48.x, 7.49.x, 7.50.x, 7.51.x, 7.52.x, 7.53.x, 7.54.x, 7.55.x, 7.56.x, 7.57.x, 7.58.x, 7.59.x, 7.60.x, 7.61.x, 7.62.x, 7.63.x, 7.64.x, 7.65.x, 7.66.x, 7.67.x, 7.68.x, 7.69.x, 7.70.x, 7.71.x, 7.72.x, 7.73.x, 7.74.x, 7.75.x, 7.76.x, 7.77.x, 7.78.x, 7.79.x, 7.80.x, 7.81.x, 7.82.x, 7.83.x, 7.84.x, 7.85.x, 7.86.x, 7.87.x, 7.88.x, 7.89.x, 7.90.x, 7.91.x, 7.92.x, 7.93.x, 7.94.x, 7.95.x, 7.96.x, 7.97.x, 7.98.x, 7.99.x, 8.0.x, 8.1.x, 8.2.x, 8.3.x, 8.4.x, 8.5.x, 8.6.x, 8.7.x, 8.8.x, 8.9.x, 8.10.x, 8.11.x, 8.12.x, 8.13.x, 8.14.x, 8.15.x, 8.16.x, 8.17.x, 8.18.x, 8.19.x, 8.20.x, 8.21.x, 8.22.x, 8.23.x, 8.24.x, 8.25.x, 8.26.x, 8.27.x, 8.28.x, 8.29.x, 8.30.x, 8.31.x, 8.32.x, 8.33.x, 8.34.x, 8.35.x, 8.36.x, 8.37.x, 8.38.x, 8.39.x, 8.40.x, 8.41.x, 8.42.x, 8.43.x, 8.44.x, 8.45.x, 8.46.x, 8.47.x, 8.48.x, 8.49.x, 8.50.x, 8.51.x, 8.52.x, 8.53.x, 8.54.x, 8.55.x, 8.56.x, 8.57.x, 8.58.x, 8.59.x, 8.60.x, 8.61.x, 8.62.x, 8.63.x, 8.64.x, 8.65.x, 8.66.x, 8.67.x, 8.68.x, 8.69.x, 8.70.x, 8.71.x, 8.72.x, 8.73.x, 8.74.x, 8.75.x, 8.76.x, 8.77.x, 8.78.x, 8.79.x, 8.80.x, 8.81.x, 8.82.x, 8.83.x, 8.84.x, 8.85.x, 8.86.x, 8.87.x, 8.88.x, 8.89.x, 8.90.x, 8.91.x, 8.92.x, 8.93.x, 8.94.x, 8.95.x, 8.96.x, 8.97.x, 8.98.x, 8.99.x, 9.0.x, 9.1.x, 9.2.x, 9.3.x, 9.4.x, 9.5.x, 9.6.x, 9.7.x, 9.8.x, 9.9.x, 9.10.x, 9.11.x, 9.12.x, 9.13.x, 9.14.x, 9.15.x, 9.16.x, 9.17.x, 9.18.x, 9.19.x, 9.20.x, 9.21.x, 9.22.x, 9.23.x, 9.24.x, 9.25.x, 9.26.x, 9.27.x, 9.28.x, 9.29.x, 9.30.x, 9.31.x, 9.32.x, 9.33.x, 9.34.x, 9.35.x, 9.36.x, 9.37.x, 9.38.x, 9.39.x, 9.40.x, 9.41.x, 9.42.x, 9.43.x, 9.44.x, 9.45.x, 9.46.x, 9.47.x, 9.48.x, 9.49.x, 9.50.x, 9.51.x, 9.52.x, 9.53.x, 9.54.x, 9.55.x, 9.56.x, 9.57.x, 9.58.x, 9.59.x, 9.60.x, 9.61.x, 9.62.x, 9.63.x, 9.64.x, 9.65.x, 9.66.x, 9.67.x, 9.68.x, 9.69.x, 9.70.x, 9.71.x, 9.72.x, 9.73.x, 9.74.x, 9.75.x, 9.76.x, 9.77.x, 9.78.x, 9.79.x, 9.80.x, 9.81.x, 9.82.x, 9.83.x, 9.84.x, 9.85.x, 9.86.x, 9.87.x, 9.88.x, 9.89.x, 9.90.x, 9.91.x, 9.92.x, 9.93.x, 9.94.x, 9.95.x, 9.96.x, 9.97.x, 9.98.x, 9.99.x, 10.0.x, 10.1.x, 10.2.x, 10.3.x, 10.4.x, 10.5.x, 10.6.x, 10.7.x, 10.8.x, 10.9.x, 10.10.x, 10.11.x, 10.12.x, 10.13.x, 10.14.x, 10.15.x, 10.16.x, 10.17.x, 10.18.x, 10.19.x, 10.20.x, 10.21.x, 10.22.x, 10.23.x, 10.24.x, 10.25.x, 10.26.x, 10.27.x, 10.28.x, 10.29.x, 10.30.x, 10.31.x, 10.32.x, 10.33.x, 10.34.x, 10.35.x, 10.36.x, 10.37.x, 10.38.x, 10.39.x, 10.40.x, 10.41.x, 10.42.x, 10.43.x, 10.44.x, 10.45.x, 10.46.x, 10.47.x, 10.48.x, 10.49.x, 10.50.x, 10.51.x, 10.52.x, 10.53.x, 10.54.x, 10.55.x, 10.56.x, 10.57.x, 10.58.x, 10.59.x, 10.60.x, 10.61.x, 10.62.x, 10.63.x, 10.64.x, 10.65.x, 10.66.x, 10.67.x, 10.68.x, 10.69.x, 10.70.x, 10.71.x, 10.72.x, 10.73.x, 10.74.x, 10.75.x, 10.76.x, 10.77.x, 10.78.x, 10.79.x, 10.80.x, 10.81.x, 10.82.x, 10.83.x, 10.84.x, 10.85.x, 10.86.x, 10.87.x, 10.88.x, 10.89.x, 10.90.x, 10.91.x, 10.92.x, 10.93.x, 10.94.x, 10.95.x, 10.96.x, 10.97.x

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Linux arm64 TLB Info Disclosure CVE-2020-1023 Summary

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