How severe is CVE-2023-32629?

CVE-2023-32629 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-32629 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-32629?

CVE-2023-32629 affects Canonical Ubuntu Linux. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-32629?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-32629 published?

CVE-2023-32629 was published on 2023-07-26 and last updated on 2026-06-17.

CVE-2023-32629

CVE-2023-32629 is a high-severity vulnerability in Canonical Ubuntu Linux with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Canonical Ubuntu Linux
Published: 2023-07-26
Last modified: 2026-06-17

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

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
How severe is CVE-2023-32629?: CVE-2023-32629 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-32629 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-32629?: CVE-2023-32629 affects Canonical Ubuntu Linux. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-32629?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-32629 published?: CVE-2023-32629 was published on 2023-07-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:canonical:ubuntu_linux:23.04:*:*:*:*:*:*:*

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