CVE-2025-40179: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-40179DEBIAN-CVE-2025-40179
Published 12-11-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-40179 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.9% 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
0.22%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 43 · Related 42
DLA-4379-1OPENSUSE-SU-2026:20145-1SUSE-SU-2026:0278-1SUSE-SU-2026:0281-1SUSE-SU-2026:0293-1SUSE-SU-2026:0315-1

Timeline

  1. 12-11-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: verify orphan file size is not too big In principle orphan file can be arbitrarily large. However orphan replay needs to traverse it all and we also pin all its buffers in memory. Thus filesystems with absurdly large orphan files can lead to big amounts of memory consumed. Limit orphan file size to a sane value and also use kvmalloc() for allocating array of block descriptor structures to avoid large order allocations for sane but large orphan files.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

+0.02 pp

From 0.21% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.22%

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

Ubuntu141 products
  • linux< 5.15.0-170.180 | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1100.107 | < 6.8.0-1050.53 | < 6.17.0-1007.7
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.158-1 | < 6.12.57-1 | < 6.17.6-1
Linux1 product
  • linux≥ 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < 95a21611b14ae0a401720645245a8db16f040995 | ≥ 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < 566a1d6084563bd07433025aa23bcea4427de107 | ≥ 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < 304fc34ff6fc8261138fd81f119e024ac3a129e9 | ≥ 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < a2d803fab8a6c6a874277cb80156dc114db91921 | ≥ 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < 2b9da798ff0f4d026c5f0f815047393ebe7d8859 | ≥ 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37, < 0a6ce20c156442a4ce2a404747bb0fb05d54eeb3 | 5.15

3 vendors · 143 products

References

40 links
Show all 40 references