CVE-2026-90391: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-90391DEBIAN-CVE-2026-90391
Published 17-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-90391 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 10.7% 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 1 · Related 1
OPENSUSE-SU-2026:11893-1

Timeline

  1. 17-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: lib/test_hmm: fail dmirror_fault() when the mirrored mm is gone dmirror_fault() is called from the dmirror_read() and dmirror_write() retry loops after dmirror_do_read() or dmirror_do_write() finds a missing device page table entry. If the mirrored mm has already exited, mmget_not_zero() fails. The current code returns 0 in that case, which tells the caller that faulting succeeded even though no page was faulted and no device page table entry was installed. The caller then retries the same address, hits -ENOENT again, and can loop forever without making progress. Return -EFAULT instead, so the ioctl fails when the mirrored mm is no longer faultable.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

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

Ubuntu157 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
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ b2ef9f5a5cb37643ca5def3516c546457074b882, < 50606ced303782f8715e2d0b98ca374ea498fa29 | ≥ b2ef9f5a5cb37643ca5def3516c546457074b882, < 541a67f21ab807c8dbc0ea88d5a2eb73b2618090 | ≥ b2ef9f5a5cb37643ca5def3516c546457074b882, < d8e64ffab01e032ae29159d27230ace8cf8bdc80 | ≥ b2ef9f5a5cb37643ca5def3516c546457074b882, < 2636569ea7c19d9a40db4a1e8d0a027bdacf1569 | ≥ b2ef9f5a5cb37643ca5def3516c546457074b882, < 701347e31aa607f3782403151a3125729d685275 | ≥ b2ef9f5a5cb37643ca5def3516c546457074b882, < af7a6d6ec36a16a583ba2e4e9984c3cf1fe34655 | ≥ b2ef9f5a5cb37643ca5def3516c546457074b882, < a2074f86fc9653831e4fb7b711bb715db330f182 | ≥ b2ef9f5a5cb37643ca5def3516c546457074b882, < 6a8024511ddf4877435c34fb3d6028aa8e590649 | 5.8

3 vendors · 160 products

References

13 links
Show all 13 references