CVE-2023-32629
HIGH
7.8
CVSS Score
Published: July 26, 2023 at 01:59 AM UTC
Updated: June 17, 2026 at 05:59 AM UTC
2 products affected across 1 vendorUbuntu LinuxUbuntu Kernel
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Severity
HIGH7.8
Exploit prediction
EPSS 9%
SSVC
No known exploit
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
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%v < .2.0-26.26v < 5.4.0-155.172v < 6.0.0-1020.20
Affected range stops below .2.0-26.26, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 5.4.0-155.172 (unaffected)
Vendor states this is fixed in 6.0.0-1020.20 (unaffected)
Vendor states this is fixed in 6.2.0-26.26 (unaffected)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (5)
Issue TrackingThird Party Advisory
Source: [email protected]
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32629Mailing ListPatch
Source: [email protected]
https://lists.ubuntu.com/archives/kernel-team/2023-July/140920.htmlTechnical DescriptionExploit
Source: [email protected]
https://wiz.io/blog/ubuntu-overlayfs-vulnerabilitySSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.8HIGHcanonical
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-863
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