7.1

CVE-2025-40333: f2fs: fix infinite loop in __insert_extent_tree()

Deferred
AliasesUBUNTU-CVE-2025-40333DEBIAN-CVE-2025-40333
Published 09-12-2025Last modified 11-05-2026

Vulnerability summary

CVE-2025-40333 is a high (CVSS 7.1) vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.1/10
010
High · v4.0 (OSV · Ubuntu), selected by version preference
EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 17 · Related 15
MGASA-2026-0017MGASA-2026-0018USN-8029-1USN-8029-2USN-8029-3USN-8030-1

Timeline

  1. 09-12-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix infinite loop in __insert_extent_tree() When we get wrong extent info data, and look up extent_node in rb tree, it will cause infinite loop (CONFIG_F2FS_CHECK_FS=n). Avoiding this by return NULL and print some kernel messages in that case.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.22% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu154 products
  • linuxAll versions (No fix recorded) | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 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
  • linuxAll versions (No fix recorded) | < 6.12.63-1 | < 6.17.8-1
Linux1 product
  • linux≥ 98e4da8ca301e062d79ae168c67e56f3c3de3ce4, < 765f8816d3959ef1f3f7f85e2af748594d091f40 | ≥ 98e4da8ca301e062d79ae168c67e56f3c3de3ce4, < c0b9951bb2668d67eb4817bb23fc109abc08c075 | ≥ 98e4da8ca301e062d79ae168c67e56f3c3de3ce4, < f4c31adcb2a0556f43776d4e51a67de88d7fb9ee | ≥ 98e4da8ca301e062d79ae168c67e56f3c3de3ce4, < 23361bd54966b437e1ed3eb1a704572f4b279e58 | 3.8

3 vendors · 156 products

References

24 links
Show all 24 references