CVE-2025-39676: scsi: qla4xxx: Prevent a potential error pointer dereference
Vulnerability summary
CVE-2025-39676 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.1% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 47 · Related 41Timeline
- 05-09-2025PublishedVulnerability first disclosed.
- 12-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla4xxx: Prevent a potential error pointer dereference The qla4xxx_get_ep_fwdb() function is supposed to return NULL on error, but qla4xxx_ep_connect() returns error pointers. Propagating the error pointers will lead to an Oops in the caller, so change the error pointers to NULL.
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
0.18%
Chance of exploitation in the next 30 days
Percentile
7%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.18% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu148 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< 6.1.153-1 | < 6.12.48-1 | < 6.16.5-1
- debian_linuxEOL11.0
Linux2 products
- linux≥ 13483730a13bef372894aefcf73760f5c6c297be, < d0225f41ee70611ca88ccb22c8542ecdfa7faea8 | ≥ 13483730a13bef372894aefcf73760f5c6c297be, < ad8a9d38d30c691a77c456e72b78f7932d4f234d | ≥ 13483730a13bef372894aefcf73760f5c6c297be, < 325bf7d57c4e2a341e381c5805e454fb69dd78c3 | ≥ 13483730a13bef372894aefcf73760f5c6c297be, < 46288d12d1c30d08fbeffd05abc079f57a43a2d4 | ≥ 13483730a13bef372894aefcf73760f5c6c297be, < f5ad0819f902b4b33591791b92a0350fb3692a6b | ≥ 13483730a13bef372894aefcf73760f5c6c297be, < f1424c830d6ce840341aac33fe99c8ac45447ac1 | ≥ 13483730a13bef372894aefcf73760f5c6c297be, < f4bc3cdfe95115191e24592bbfc15f1d4a705a75 | ≥ 13483730a13bef372894aefcf73760f5c6c297be, < 9dcf111dd3e7ed5fce82bb108e3a3fc001c07225 | 3.2
- linux_kernel≥ 3.2.1, < 5.4.297 | ≥ 5.5, < 5.10.241 | ≥ 5.11, < 5.15.190 | ≥ 5.16, < 6.1.149 | ≥ 6.2, < 6.6.103 | ≥ 6.7, < 6.12.44 | ≥ 6.13, < 6.16.4 | 3.2 | 3.2:rc7 | 6.17:rc1 | 6.17:rc2
3 vendors · 152 products
References
41 links- lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
- lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory