CVE-2026-98223: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-98223DEBIAN-CVE-2026-98223
Published 06-10-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-98223 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.4% 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
0.17%
0%100%
Low · Change unavailable
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-2026:12131-1

Timeline

  1. 06-10-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mm: filemap: retain mapped dropbehind folios Fault-around can map ready dropbehind folios without going through the normal page-cache lookup that clears dropbehind. A mapping represents a competing cached user, so retain the folio instead of forcibly unmapping it when writeback completes. For a mapped folio, folio_unmap_invalidate() can call unmap_mapping_folio(), which takes i_mmap_rwsem and may sleep. Retaining mapped folios avoids this path when folio_end_dropbehind() runs in non-preemptible task context. Tal was able to trigger a sleeping-in-atomic warning due to this [1]. Unmapped dropbehind folios continue through the existing invalidation path.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202621-10-2026
EPSS score
0.17%

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

Ubuntu120 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)
Debian1 product
  • linux< 7.2.8-1
Linux1 product
  • linux≥ fb7d3bc4149395c1ae99029c852eab6c28fc3c88, < 2897601dffe576fcd87a4259102f41f7fb0cbfc8 | ≥ fb7d3bc4149395c1ae99029c852eab6c28fc3c88, < 77c0fade37c80e8aa16ac048a9828249055e3f66 | ≥ fb7d3bc4149395c1ae99029c852eab6c28fc3c88, < 848d2ce2fce15fbdc083fbf9691bfa72911033c4 | 6.14

3 vendors · 122 products

References

7 links