CVE-2025-68266: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-68266DEBIAN-CVE-2025-68266
Published 16-12-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-68266 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 11.4% 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
0.22%
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 32 · Related 30
DLA-4475-1DLA-4476-1DSA-6127-1USN-8094-1USN-8094-2USN-8094-3

Timeline

  1. 16-12-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: bfs: Reconstruct file type when loading from disk syzbot is reporting that S_IFMT bits of inode->i_mode can become bogus when the S_IFMT bits of the 32bits "mode" field loaded from disk are corrupted or when the 32bits "attributes" field loaded from disk are corrupted. A documentation says that BFS uses only lower 9 bits of the "mode" field. But I can't find an explicit explanation that the unused upper 23 bits (especially, the S_IFMT bits) are initialized with 0. Therefore, ignore the S_IFMT bits of the "mode" field loaded from disk. Also, verify that the value of the "attributes" field loaded from disk is either BFS_VREG or BFS_VDIR (because BFS supports only regular files and the root directory).

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

+0.02 pp

From 0.20% 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

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-173.183 | < 6.8.0-110.110 | < 6.17.0-19.19
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1103.110 | < 6.8.0-1052.55 | < 6.17.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.162-1 | < 6.12.63-1 | < 6.17.12-1
Linux1 product
  • linux≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d0c5ec1f57d8fbb953f166a27d9d32473dc8f3e4 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < aeccd6743ee4fdd1ab8cfcbb5b9a20b613418f6d | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 8f73336b75bd3457b6f9410f2a0601a238f32238 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a9f626396bfe66f49b743601e862767928237cc0 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 77899444d46162aeb65f229590c26ba266864223 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a8cb796e7e2cb7971311ba236922f5e7e1be77e6 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 34ab4c75588c07cca12884f2bf6b0347c7a13872 | 2.6.12

3 vendors · 159 products

References

43 links
Show all 43 references