CVE-2025-71184: linux NULL Pointer Dereference
Vulnerability summary
CVE-2025-71184 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 2.9% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 27 · Related 26Timeline
- 31-01-2026PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix NULL dereference on root when tracing inode eviction When evicting an inode the first thing we do is to setup tracing for it, which implies fetching the root's id. But in btrfs_evict_inode() the root might be NULL, as implied in the next check that we do in btrfs_evict_inode(). Hence, we either should set the ->root_objectid to 0 in case the root is NULL, or we move tracing setup after checking that the root is not NULL. Setting the rootid to 0 at least gives us the possibility to trace this call even in the case when the root is NULL, so that's the solution taken here.
CVSS metrics
4 scores · 3 sources · 2 versions- 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
0.14%
Chance of exploitation in the next 30 days
Percentile
3%
Versus all other CVEs
30-day change
+0.01 pp
From 0.13% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu157 products
- linuxAll versions (No fix recorded) | < 6.8.0-117.117
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 6.8.0-1055.58
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 1abe9b8a138c9988ba8f7bfded6453649a31541f, < 64d8abd8c5305795a2b35fc96039d99d34f5e762 | ≥ 1abe9b8a138c9988ba8f7bfded6453649a31541f, < 582ba48e4a4c06fef6bdcf4e57b7b9af660bbd0c | ≥ 1abe9b8a138c9988ba8f7bfded6453649a31541f, < 99e057f3d3ef24b99a7b1d84e01dd1bd890098da | ≥ 1abe9b8a138c9988ba8f7bfded6453649a31541f, < f157dd661339fc6f5f2b574fe2429c43bd309534 | 2.6.39
- linux_kernel≥ 2.6.39.1, < 6.6.130 | ≥ 6.7, < 6.12.66 | ≥ 6.13, < 6.18.6 | 2.6.39 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
- linuxAll versions (No fix recorded) | < 6.12.69-1 | < 6.18.8-1
3 vendors · 160 products
