CVE-2026-80791

In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: zero the AUTH_RECEIVE response buffer nvmet_execute_auth_receive() allocates the response buffer with kmalloc() sized by the host-supplied AUTH_RECEIVE allocation length, but the DH-HMAC-CHAP builders write only a fixed-size message into it. The full allocation length is then copied to the wire by nvmet_copy_to_sgl(), so a remote initiator receives the bytes past the built message -- up to nearly a page of uninitialized slab -- during the pre-authentication handshake. Allocate the buffer with kzalloc() so the unwritten tail is zeroed before it is sent; conforming responses are unaffected.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/1d6837d98bf966a041af65de5f78de7409ff83bc
https://git.kernel.org/stable/c/2dcc9226203da7275a9c29d20007da278d73d5e9
https://git.kernel.org/stable/c/3ddcfb013322aa37eaa7a0d344b73079c38dfa21
https://git.kernel.org/stable/c/447b668faa14710f611e714031e3739ac3ec3a4f
https://git.kernel.org/stable/c/8f6363c8d54dde95982f0ab45e77cf57ec0efd62
https://git.kernel.org/stable/c/b26189d28442183a8b5edb754f4a6918f77ca84e
https://git.kernel.org/stable/c/dfcf013f77709ebdb282767edc2795a37cab5b57

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-04 16:18

Updated : 2026-09-04 16:18

NVD link : CVE-2026-80791

Mitre link : CVE-2026-80791

CVE.ORG link : CVE-2026-80791

JSON object : View

Products Affected

No product.

CWE

No CWE.

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