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CVE-2023-53996— x86/sev: Make enc_dec_hypercall() accept a size instead of npages

EPSS 0.02% · P5
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I. Basic Information for CVE-2023-53996

Vulnerability Information
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Vulnerability Title
x86/sev: Make enc_dec_hypercall() accept a size instead of npages
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: x86/sev: Make enc_dec_hypercall() accept a size instead of npages enc_dec_hypercall() accepted a page count instead of a size, which forced its callers to round up. As a result, non-page aligned vaddrs caused pages to be spuriously marked as decrypted via the encryption status hypercall, which in turn caused consistent corruption of pages during live migration. Live migration requires accurate encryption status information to avoid migrating pages from the wrong perspective.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于enc_dec_hypercall接受页数而非大小，可能导致页面错误标记。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 064ce6c550a0630789978bfec7a13ab2bd1bdcdf ~ ba50e7773a99a109a1ea6f753b766a080d3b21cc -
LinuxLinux 5.16 -

II. Public POCs for CVE-2023-53996

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III. Intelligence Information for CVE-2023-53996

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Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total

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Showing top 20 of 322 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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