CVE-2026-80791: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-80791DEBIAN-CVE-2026-80791
Published 04-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-80791 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.2% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
MGASA-2026-0506OPENSUSE-SU-2026:11773-1

Timeline

  1. 04-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

0.00 pp

From 0.21% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu142 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.107-1 | < 7.1.12-1
  • linux-6.12< 6.12.107-1~deb12u1
Linux1 product
  • linux≥ db1312dd95488b5e6ff362ff66fcf953a46b1821, < 447b668faa14710f611e714031e3739ac3ec3a4f | ≥ db1312dd95488b5e6ff362ff66fcf953a46b1821, < 8f6363c8d54dde95982f0ab45e77cf57ec0efd62 | ≥ db1312dd95488b5e6ff362ff66fcf953a46b1821, < dfcf013f77709ebdb282767edc2795a37cab5b57 | ≥ db1312dd95488b5e6ff362ff66fcf953a46b1821, < b26189d28442183a8b5edb754f4a6918f77ca84e | ≥ db1312dd95488b5e6ff362ff66fcf953a46b1821, < 2dcc9226203da7275a9c29d20007da278d73d5e9 | ≥ db1312dd95488b5e6ff362ff66fcf953a46b1821, < 1d6837d98bf966a041af65de5f78de7409ff83bc | ≥ db1312dd95488b5e6ff362ff66fcf953a46b1821, < 3ddcfb013322aa37eaa7a0d344b73079c38dfa21 | 6.0

3 vendors · 145 products

References

11 links
Show all 11 references