CVE-2026-22984: libceph: prevent potential out-of-bounds reads in handle_auth_done()

Published Jan 23, 2026
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

libceph: prevent potential out-of-bounds reads in handleauthdone()

Perform an explicit bounds check on payloadlen to avoid a possible out-of-bounds access in the callout.

[ idryomov: changelog ]

Affected Software

11 affected componentsFixes available
linux/kernel
Linux Linux kernel>=5.11<5.15.198
Linux Linux kernel>=5.16<6.1.161
Linux Linux kernel>=6.2<6.6.121
Linux Linux kernel>=6.7<6.12.66
Linux Linux kernel>=6.13<6.18.6
Linux Linux kernel=6.19-rc1
Linux Linux kernel=6.19-rc2
Linux Linux kernel=6.19-rc3
Linux Linux kernel=6.19-rc4
Microsoft cbl2 kernel 5.15.186.1-1

Event History

Jan 23, 2026
CVE Published
via MITRE·03:24 PM
Data Sourced
via MITRE·03:24 PM
DescriptionSeverity
Data Sourced
via Red Hat·04:02 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·04:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Feb 28, 2026
Data Sourced
via Microsoft·09:03 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·09:03 AM
Affected Software
Updated
via Microsoft·09:03 AM
DescriptionSeverity
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Frequently Asked Questions

1

What is the severity of CVE-2026-22984?

CVE-2026-22984 is classified as a medium severity vulnerability due to the potential for out-of-bounds reads.

2

How do I fix CVE-2026-22984?

To fix CVE-2026-22984, ensure that your Linux kernel is updated to a version that includes the patch for this vulnerability.

3

What systems are affected by CVE-2026-22984?

CVE-2026-22984 affects the Linux kernel, specifically in the libceph component.

4

What does CVE-2026-22984 exploit?

CVE-2026-22984 exploits a lack of bounds checking on payload length in the handle_auth_done() function, leading to potential out-of-bounds reads.

5

When was CVE-2026-22984 discovered?

CVE-2026-22984 was disclosed in 2026 as a vulnerability in the Linux kernel.

Contact

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