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CVE-2023-52441

Linux Kernel buffer overflow

9.1 CRITICALEPSS 0.68%
  1. Published21 Feb 2024

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out of bounds in init_smb2_rsp_hdr() If client send smb2 negotiate request and then send smb1 negotiate request, init_smb2_rsp_hdr is called for smb1 negotiate request since need_neg is set to false. This patch ignore smb1 packets after ->need_neg is set to false.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

Linux Kernel≥ 5.15.0 < 5.15.145 · ≥ 5.16.0 < 6.1.53 · ≥ 6.2.0 < 6.4.16

Remediation

Fixed in
Linux Kernel≥ 5.15.145

References

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Frequently asked

Is CVE-2023-52441 being actively exploited?

CVE-2023-52441 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.68%.

How severe is CVE-2023-52441?

CVE-2023-52441 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.68% probability of exploitation.

Which products are affected by CVE-2023-52441?

Affected products include Linux Kernel.

How do I fix CVE-2023-52441?

Upgrade affected software to a fixed version, for example Linux Kernel 5.15.145 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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