CVE-2023-52755

Linux Kernel buffer overflow

9.8 CRITICALEPSS 28.1%

Published21 May 2024

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab out of bounds write in smb_inherit_dacl() slab out-of-bounds write is caused by that offsets is bigger than pntsd allocation size. This patch add the check to validate 3 offsets using allocation size.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux Kernel≥ 5.15 < 5.15.140 · ≥ 5.16 < 6.1.64 · ≥ 6.2 < 6.5.13 · ≥ 6.6 < 6.6.3

Remediation

Fixed in

Linux Kernel≥ 5.15.140

Patch & vendor advisories

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2023-52755 being actively exploited?

CVE-2023-52755 is not in the CISA KEV catalog. Its EPSS exploit probability is 28.1%.

How severe is CVE-2023-52755?

CVE-2023-52755 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 28.1% probability of exploitation.

Which products are affected by CVE-2023-52755?

Affected products include Linux Kernel.

How do I fix CVE-2023-52755?

Upgrade affected software to a fixed version, for example Linux Kernel 5.15.140 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-52755 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.