7.8

CVE-2025-38408: linux NULL Pointer Dereference

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2025-38408DEBIAN-CVE-2025-38408
Published 25-07-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-38408 is a high (CVSS 7.8) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 7.9% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.19%
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 51
DLA-4476-1DSA-6127-1OPENSUSE-SU-2025:20081-1SUSE-SU-2025:03600-1SUSE-SU-2025:03601-1SUSE-SU-2025:03602-1

Timeline

  1. 25-07-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: genirq/irq_sim: Initialize work context pointers properly Initialize `ops` member's pointers properly by using kzalloc() instead of kmalloc() when allocating the simulation work context. Otherwise the pointers contain random content leading to invalid dereferencing.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

+0.02 pp

From 0.17% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.19%

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

Affected systems

Ubuntu134 products
  • linux< 5.15.0-176.186 | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1105.112 | < 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 337cbeb2c13eb4cab84f576fd402d7ae4ed31ae1, < 186df821de0f34490ed5fc0861243748b2483861 | ≥ 337cbeb2c13eb4cab84f576fd402d7ae4ed31ae1, < c71aa4bb528ae6f8fd7577a0a39e5a03c60b04fb | ≥ 337cbeb2c13eb4cab84f576fd402d7ae4ed31ae1, < ec3656a8cb428d763def32bc2fa695f94be23629 | ≥ 337cbeb2c13eb4cab84f576fd402d7ae4ed31ae1, < 19bd7597858dd15802c1d99fcc38e528f469080a | ≥ 337cbeb2c13eb4cab84f576fd402d7ae4ed31ae1, < 7f73d1def72532bac4d55ea8838f457a6bed955c | ≥ 337cbeb2c13eb4cab84f576fd402d7ae4ed31ae1, < 8a2277a3c9e4cc5398f80821afe7ecbe9bdf2819 | 5.8
  • linux_kernel≥ 5.8, < 6.12.37 | ≥ 6.13, < 6.15.6 | 6.16:rc1 | 6.16:rc2
Debian1 product
  • linux< 6.1.162-1 | < 6.12.37-1

3 vendors · 137 products

References

45 links
Show all 45 references