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CRITICAL · 9.8

CVE-2022-26495

In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will cause a zero-sized buffer to be allocate...

Vulnerability Description

In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will cause a zero-sized buffer to be allocated for the name, resulting in a write to a dangling pointer. This issue exists for the NBD_OPT_INFO, NBD_OPT_GO, and NBD_OPT_EXPORT_NAME messages.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
Network Block Device ProjectNetwork Block Device< 3.24
DebianDebian Linux9.0
FedoraprojectFedora34

Related Weaknesses (CWE)

CWE-190

References

FAQ

What is CVE-2022-26495?

CVE-2022-26495 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will cause a zero-sized buffer to be allocate...

How severe is CVE-2022-26495?

CVE-2022-26495 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2022-26495?

Check the references section above for vendor advisories and patch information. Affected products include: Network Block Device Project Network Block Device, Debian Debian Linux, Fedoraproject Fedora.