CVE-2026-45993 Details
Description
In the Linux kernel, the following vulnerability has been resolved: LoongArch: Add spectre boundry for syscall dispatch table The LoongArch syscall number is directly controlled by userspace, but does not have a array_index_nospec() boundry to prevent access past the syscall function pointer tables.
A vulnerability has been addressed in the Linux kernel's LoongArch architecture regarding the syscall dispatch table. The issue arises because the syscall number can be directly manipulated by userspace, and there was no 'array_index_nospec()' boundary to prevent accessing beyond the limits of the syscall function pointer tables. This lack of boundary could potentially be exploited to interfere with the normal operation of the syscall handling.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched version are available on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/07040904ad217545be096d4280ed33c02f6a3750 | kernel.org | Patch |
| https://git.kernel.org/stable/c/0c965d2784fbbd7f8e3b96d875c9cfdf7c00da3d | kernel.org | Patch |
| https://git.kernel.org/stable/c/108f2cd13577a410c0ad6ea00708596d9d0dfc90 | kernel.org | Patch |
| https://git.kernel.org/stable/c/85cbf7fb568af5358aae61925c4e66b8f5e1439d | kernel.org | Patch |
| https://git.kernel.org/stable/c/bc84a109c2082dd0c4b38e8d923c046b41977533 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c8a8e863928424046b8fd328f02c359baa0a0c3f | kernel.org |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.19, < 6.6.140 >= 6.7, < 6.12.86 >= 6.13, < 6.18.27 >= 6.19, < 7.0.4 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 19, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 16, 2026 | Initial Analysis | [email protected] |
| May 27, 2026 | New CVE Received | kernel.org |