Skip to main content
Public proof of conceptFix available

CVE-2023-32629

A public proof of concept exists; no exploitation attested.

  • Published2023-07-26
  • Fixed in.2.0-26.26 · 6.0.0-1020.20 · 5.4.0-155.172
  • WeaknessCWE-863

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Local privilege escalation vulnerability in Ubuntu Kernels overlayfs ovl_copy_up_meta_inode_data skip permission checks when calling ovl_do_setxattr on Ubuntu kernels

Timeline

dates in UTC
  1. 2023-07-2602:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-32629?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-32629?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

CISA-ADP · NVD
Canonical ubantu kernel
BranchAffectedFixed in
—< .2.0-26.26.2.0-26.26
6.0< 6.0.0-1020.206.0.0-1020.20
5.4< 5.4.0-155.1725.4.0-155.172
Canonical ubuntu linux
BranchAffectedFixed in
23.4= 23.04no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As canonical, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Canonical Ubuntu Kernelother versions: not affected

    package Linuxplatforms: Linux

    Not affected < 6.2.0-26.26 · < 6.0.0-1020.20 · < 5.4.0-155.172

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-09-11

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • linuxUbuntu:Pro:22.04:LTSall versions · fixed in 5.15.0-177.187
  • linuxUbuntu:Pro:20.04:LTSall versions · fixed in 5.4.0-155.172
  • linuxUbuntu:Pro:16.04:LTSall versions · fixed in 4.4.0-243.277
  • linuxUbuntu:22.04:LTSall versions · fixed in 5.15.0-177.187and 1 other package
  • linuxUbuntu:20.04:LTSall versions · fixed in 5.4.0-155.172
  • linux-awsUbuntu:Pro:22.04:LTSall versions · fixed in 5.15.0-1106.113
  • linux-awsUbuntu:Pro:20.04:LTSall versions · fixed in 5.4.0-1106.114
  • linux-awsUbuntu:Pro:16.04:LTSall versions · fixed in 4.4.0-1159.174

85 more package ranges on OSV.dev

Vendor advisories

  • CVE-2023-32629 Red Hat Product Security

    kernel: overlayfs: In Ubuntu skip permission checking for trusted.overlayfs.* xattrs

Full record on NVD

Fix

  1. Update Canonical ubantu kernel to .2.0-26.26 · 6.0.0-1020.20 · 5.4.0-155.172

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
5 repositories, unverifiedkaotickj/Check-for-CVE-2023-32629-GameOver-layThrynSec/CVE-2023-32629-CVE-2023-2640---POC-Escalationk4but0/Ubuntu-LPExS9NTX/CVE-2023-32629-CVE-2023-2640-Ubuntu-Privilege-Escalation-POCh3raklez/CVE-2023-32629
PoC-in-GitHub
Metasploit modules
1 moduleexploit/linux/local/gameoverlay_privescrank: normalModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2023-07-26
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-5xvw-32xh-2vr5

Frequently asked questions

What is CVE-2023-32629?

Local privilege escalation vulnerability in Ubuntu Kernels overlayfs ovl_copy_up_meta_inode_data skip permission checks when calling ovl_do_setxattr on Ubuntu kernels

Is CVE-2023-32629 actively exploited?

Active exploitation of CVE-2023-32629 has not been confirmed. Its EPSS score was 8.3% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-32629?

CVE-2023-32629 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Running Linux kernel? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record