CVE-2026-45993

LoongArch: Add spectre boundry for syscall dispatch table

CVE-2026-45993 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-45993, released May 27, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.3

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0014

3rd percentile

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.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
linux · Debian 13.5 (trixie)	6.12.86-1	DEBIAN-CVE-2026-45993	May 27, 2026
linux · Debian 14	7.0.4-1	DEBIAN-CVE-2026-45993	May 27, 2026

Details

Published
May 27, 2026
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45993

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