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CVE-2024-50086

Linux Kernel use-after-free

9.8 CRITICALEPSS 0.48%
  1. Published29 Oct 2024

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix user-after-free from session log off There is racy issue between smb2 session log off and smb2 session setup. It will cause user-after-free from session log off. This add session_lock when setting SMB2_SESSION_EXPIRED and referece count to session struct not to free session while it is being used.

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≥ 6.2 < 6.6.58 · ≥ 6.7 < 6.11.5 · < 6.1.114 · 6.12

Remediation

Fixed in
Linux Kernel≥ 6.6.58

References

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Frequently asked

Is CVE-2024-50086 being actively exploited?

CVE-2024-50086 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.48%.

How severe is CVE-2024-50086?

CVE-2024-50086 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.48% probability of exploitation.

Which products are affected by CVE-2024-50086?

Affected products include Linux Kernel.

How do I fix CVE-2024-50086?

Upgrade affected software to a fixed version, for example Linux Kernel 6.6.58 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-50086 against the real software inventory on every managed device, as each hourly inventory arrives. 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.