5.5

CVE-2025-38481: debian debian_linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2025-38481DEBIAN-CVE-2025-38481
Published 28-07-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-38481 is a medium (CVSS 5.5) vulnerability in debian debian_linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.18%
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 53 · Related 47
DLA-4327-1DLA-4328-1DSA-5973-1DSA-5975-1MGASA-2025-0218MGASA-2025-0219

Timeline

  1. 28-07-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: comedi: Fail COMEDI_INSNLIST ioctl if n_insns is too large The handling of the `COMEDI_INSNLIST` ioctl allocates a kernel buffer to hold the array of `struct comedi_insn`, getting the length from the `n_insns` member of the `struct comedi_insnlist` supplied by the user. The allocation will fail with a WARNING and a stack dump if it is too large. Avoid that by failing with an `-EINVAL` error if the supplied `n_insns` value is unreasonable. Define the limit on the `n_insns` value in the `MAX_INSNS` macro. Set this to the same value as `MAX_SAMPLES` (65536), which is the maximum allowed sum of the values of the member `n` in the array of `struct comedi_insn`, and sensible comedi instructions will have an `n` of at least 1.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

+0.02 pp

From 0.16% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.18%

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

Ubuntu147 products
  • linuxAll versions (No fix recorded) | < 5.15.0-163.173 | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1097.104 | < 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.147-1 | < 6.12.41-1 | < 6.16.3-1
  • debian_linuxEOL11.0
Linux2 products
  • linux≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < 454d732dfd0aef7d7aa950c409215ca06d717e93 | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < c68257588e87f45530235701a42496b7e9e56adb | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < 69dc06b9514522de532e997a21d035cd29b0db44 | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < d4c73ce13f5b5a0fe0319f1f352ff602f0ace8e3 | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < c9d3d9667443caafa804cd07940aeaef8e53aa90 | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < 992d600f284e719242a434166e86c1999649b71c | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < e3b8322cc8081d142ee4c1a43e1d702bdba1ed76 | ≥ ed9eccbe8970f6eedc1b978c157caf1251a896d4, < 08ae4b20f5e82101d77326ecab9089e110f224cc | 2.6.29
  • linux_kernel≥ 2.6.29, < 5.4.297 | ≥ 5.5, < 5.10.241 | ≥ 5.11, < 5.15.190 | ≥ 5.16, < 6.1.147 | ≥ 6.2, < 6.6.100 | ≥ 6.7, < 6.12.40 | ≥ 6.13, < 6.15.8 | 6.16:rc1 | 6.16:rc2 | 6.16:rc3 | 6.16:rc4 | 6.16:rc5 | 6.16:rc6

3 vendors · 151 products

References

46 links
Show all 46 references