CVE-2025-38167: debian debian_linux NULL Pointer Dereference
Vulnerability summary
CVE-2025-38167 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.6% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 36 · Related 32Timeline
- 03-07-2025PublishedVulnerability first disclosed.
- 15-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: handle hdr_first_de() return value The hdr_first_de() function returns a pointer to a struct NTFS_DE. This pointer may be NULL. To handle the NULL error effectively, it is important to implement an error handler. This will help manage potential errors consistently. Additionally, error handling for the return value already exists at other points where this function is called. Found by Linux Verification Center (linuxtesting.org) with SVACE.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.17%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
+0.02 pp
From 0.15% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu133 products
- linux< 5.15.0-156.166 | < 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1092.99 | < 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 | < 6.12.35-1
- debian_linuxEOL11.0
Linux2 products
- linux≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 5390b3d4c6d41d05bb9149d094d504cbc9ea85bf | ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 83cd0aa74793384dbdffc140500b200e9776a302 | ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 701340a25b1ad210e6b8192195be21fd3fcc22c7 | ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 2d5879f64554181b89f44d4817b9ea86e8e913e1 | ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 4ecd0cde89feee26525ccdf1af0c1ae156ca010b | ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < af5cab0e5b6f8edb0be51a9f47f3f620e0b4fd70 | 5.15
- linux_kernel≥ 5.15, < 5.15.186 | ≥ 5.16, < 6.1.142 | ≥ 6.2, < 6.6.94 | ≥ 6.7, < 6.12.34 | ≥ 6.13, < 6.15.3
3 vendors · 137 products
References
45 links- lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory