CVE-2025-40293: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-40293DEBIAN-CVE-2025-40293
Published 08-12-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-40293 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.4% 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
0.20%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 30 · Related 27
DLA-4436-1MGASA-2026-0017MGASA-2026-0018OPENSUSE-SU-2026:20145-1SUSE-SU-2026:0278-1SUSE-SU-2026:0281-1

Timeline

  1. 08-12-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: iommufd: Don't overflow during division for dirty tracking If pgshift is 63 then BITS_PER_TYPE(*bitmap->bitmap) * pgsize will overflow to 0 and this triggers divide by 0. In this case the index should just be 0, so reorganize things to divide by shift and avoid hitting any overflows.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

0.00 pp

From 0.20% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.20%

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

Ubuntu127 products
  • linux< 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 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< 6.1.159-1 | < 6.12.63-1 | < 6.17.8-1
Linux1 product
  • linux≥ 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1, < 07105e61882ff4a7d58db63cc5f9e90c6c60506c | ≥ 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1, < 4c8a4f1d34eced168cc0b3a3dfe7b6dcc2090f69 | ≥ 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1, < de7f2c67ceb1941b05b04ac35458a03e93cc57b1 | ≥ 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1, < dbf316fc90aa954dcd5440817f4b944627ed63e0 | ≥ 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1, < cb30dfa75d55eced379a42fd67bd5fb7ec38555e | 6.1

3 vendors · 129 products

References

24 links
Show all 24 references