CVE-2026-45993

LoongArch: Add spectre boundry for syscall dispatch table

MEDIUM

5.5

CVSS Score

Published: May 27, 2026 at 12:55 PM UTC

Updated: June 20, 2026 at 03:50 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.19 ≤ v < 6.1.1765.19 ≤ v < 6.12.865.19 ≤ v < 6.18.275.19 ≤ v < 6.6.1405.19 ≤ v < 7.0.45.19 ≤ v < 7.16.13 ≤ v < 6.18.276.19 ≤ v < 7.0.46.7 ≤ v < 6.12.865.19be769645a2aef577f07afdcb4de8fad20b6d57c0

Vendor states this is fixed in 07040904ad217545be096d4280ed33c02f6a3750 (fixed)

Vendor states this is fixed in 0c965d2784fbbd7f8e3b96d875c9cfdf7c00da3d (fixed)

Vendor states this is fixed in 108f2cd13577a410c0ad6ea00708596d9d0dfc90 (fixed)

Vendor states this is fixed in 85cbf7fb568af5358aae61925c4e66b8f5e1439d (fixed)

Vendor states this is fixed in bc84a109c2082dd0c4b38e8d923c046b41977533 (fixed)

Vendor states this is fixed in c8a8e863928424046b8fd328f02c359baa0a0c3f (fixed)

Vendor states this is fixed in 5.19 (unaffected)

Vendor states this is fixed in 6.1.176 (unaffected)

Vendor states this is fixed in 6.12.86 (unaffected)

Vendor states this is fixed in 6.18.27 (unaffected)

Vendor states this is fixed in 6.6.140 (unaffected)

Vendor states this is fixed in 7.0.4 (unaffected)