Linux Kernel up to 6.19.10 array_index_nospec privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.19.10. It has been classified as critical. This issue affects the function array_index_nospec. Performing a manipulation results in an unknown weakness. This vulnerability was named CVE-2026-31483. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.19.10. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: s390/syscalls: Add spectre boundary for syscall dispatch table The s390 syscall number is directly controlled by userspace, but does not have an array_index_nospec() boundary to prevent access past the syscall function pointer tables.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-31483 since 03/09/2026. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/18/2026).

The vulnerability scanner Nessus provides a plugin with the ID 320429 (openSUSE 16 Security Update : kernel (openSUSE-SU-2026:20912-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21 or 6.19.11 eliminates this vulnerability. Applying the patch 3c3b97064764899c39a0abbd35a6caa031e70333/1cb9c7bc9025c637564fabc7fcc3c9343949e310/7a5260fbc6e79a1595328ec5c6aa3f937504a1f0/f8c444b918d639e1f9a621ee20fe481c1d10dfc4/87776f02449e3bded95b2ccbd6b012e9ae64e6f3/4d05dd18d867d58c6952a3bc260d244899da7256/48b8814e25d073dd84daf990a879a820bad2bcbd is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (320429) and CERT Bund (WID-SEC-2026-1252). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 320429
Nessus Name: openSUSE 16 Security Update : kernel (openSUSE-SU-2026:20912-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.15.203/6.1.168/6.6.131/6.12.80/6.18.21/6.19.11
Patch: 3c3b97064764899c39a0abbd35a6caa031e70333/1cb9c7bc9025c637564fabc7fcc3c9343949e310/7a5260fbc6e79a1595328ec5c6aa3f937504a1f0/f8c444b918d639e1f9a621ee20fe481c1d10dfc4/87776f02449e3bded95b2ccbd6b012e9ae64e6f3/4d05dd18d867d58c6952a3bc260d244899da7256/48b8814e25d073dd84daf990a879a820bad2bcbd

Timelineinfo

03/09/2026 CVE reserved
04/22/2026 +43 days Advisory disclosed
04/22/2026 +0 days VulDB entry created
06/18/2026 +56 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-31483 (🔒)
GCVE (CVE): GCVE-0-2026-31483
GCVE (VulDB): GCVE-100-358923
CERT Bund: WID-SEC-2026-1252 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 04/22/2026 17:19
Updated: 06/18/2026 00:31
Changes: 04/22/2026 17:19 (57), 06/11/2026 14:59 (2), 06/18/2026 00:31 (7)
Complete: 🔍
Cache ID: 216::103

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