CVE-2026-80791 Affecting linux-6.12 package, versions <6.12.107-1~deb12u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ECHOLATEST-LINUX612-19964473
- published20 Sept 2026
- disclosed4 Sept 2026
Introduced: 4 Sep 2026
NewCVE-2026-80791 (opens in a new tab)How to fix?
Upgrade Echo:latest linux-6.12 to version 6.12.107-1~deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
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.
References
- https://advisory.echohq.com/cve/CVE-2026-80791
- 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