CVE-2025-40106: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-40106DEBIAN-CVE-2025-40106
Published 31-10-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-40106 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 10.5% 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 · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 48 · Related 43
DLA-4379-1DLA-4404-1DSA-6053-1MGASA-2025-0309MGASA-2025-0310OPENSUSE-SU-2025:15702-1

Timeline

  1. 31-10-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: comedi: fix divide-by-zero in comedi_buf_munge() The comedi_buf_munge() function performs a modulo operation `async->munge_chan %= async->cmd.chanlist_len` without first checking if chanlist_len is zero. If a user program submits a command with chanlist_len set to zero, this causes a divide-by-zero error when the device processes data in the interrupt handler path. Add a check for zero chanlist_len at the beginning of the function, similar to the existing checks for !map and CMDF_RAWDATA flag. When chanlist_len is zero, update munge_count and return early, indicating the data was handled without munging. This prevents potential kernel panics from malformed user commands.

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

+0.01 pp

From 0.19% on 19-09-2026

19-09-202619-10-2026
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

Ubuntu154 products
  • linuxAll versions (No fix recorded) | < 5.15.0-170.180 | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 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≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < 4ffea48c69cb2b96a281cb7e5e42d706996631db | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < 8f3e4cd9be4b47246ea73ce5e3e0fa2f57f0d10c | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < 2670932f2465793fea1ef073e40883e8390fa4d9 | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < 6db19822512396be1a3e1e20c16c97270285ba1a | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < d4854eff25efb06d0d84c13e7129bbdba4125f8c | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < a4bb5d1bc2f238461bcbe5303eb500466690bb2c | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < 55520f65fd447e04099a2c44185453c18ea73b7e | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < 87b318ba81dda2ee7b603f4f6c55e78ec3e95974 | 2.6.29

3 vendors · 156 products

References

41 links
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