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CVE-2023-2640 is a high severity vulnerability with a CVSS score of 7.8. Exploits are available; patches have been released and should be applied urgently.
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Very high probability of exploitation in the next 30 days
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
On Ubuntu kernels carrying both c914c0e27eb0 and "UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks.
| Vendor | Product |
|---|---|
| Canonical | Ubuntu Linux |