5.5

CVE-2026-45993: LoongArch: Add spectre boundry for syscall dispatch table

Modified
AliasesUBUNTU-CVE-2026-45993DEBIAN-CVE-2026-45993
Published 27-05-2026Last modified 19-06-2026

Vulnerability summary

CVE-2026-45993 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.14%
0%100%
Low · -0.02 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:10954-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 19-06-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

Decrease -0.02 pp

From 0.16% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu97 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ be769645a2aef577f07afdcb4de8fad20b6d57c0, < c8a8e863928424046b8fd328f02c359baa0a0c3f | ≥ be769645a2aef577f07afdcb4de8fad20b6d57c0, < 108f2cd13577a410c0ad6ea00708596d9d0dfc90 | ≥ be769645a2aef577f07afdcb4de8fad20b6d57c0, < 07040904ad217545be096d4280ed33c02f6a3750 | ≥ be769645a2aef577f07afdcb4de8fad20b6d57c0, < 85cbf7fb568af5358aae61925c4e66b8f5e1439d | ≥ be769645a2aef577f07afdcb4de8fad20b6d57c0, < bc84a109c2082dd0c4b38e8d923c046b41977533 | ≥ be769645a2aef577f07afdcb4de8fad20b6d57c0, < 0c965d2784fbbd7f8e3b96d875c9cfdf7c00da3d | 5.19
  • linux_kernel≥ 5.19, < 6.6.140 | ≥ 6.7, < 6.12.86 | ≥ 6.13, < 6.18.27 | ≥ 6.19, < 7.0.4
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.86-1 | < 7.0.4-1

3 vendors · 100 products

References

11 links
Show all 11 references