CVE-2025-38387: Linux kernel · RDMA/mlx5: Initialize obj_event->obj_sub_list before xa_insert
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in e8069711139249994450c214cec152b917b959e0 : patch Linux kernel soon.
Data as of 5 Nov 2026, 21:20 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-05.
- Patch
- Available – fixed in e8069711139249994450c214cec152b917b959e0, 972e968aac0dce8fe8faad54f6106de576695d8e, 716b555fc0580c2aa4c2c32ae4401c7e3ad9873e +5
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available and has been applied in the Linux kernel source as indicated by multiple fixed commits. Users should update to a Linux kernel version that includes these fixes to prevent the kernel crash caused by this vulnerability.
Description
A vulnerability in the Linux kernel's RDMA/mlx5 driver was fixed by initializing the obj_event->obj_sub_list before inserting it into the xa tree. Without this initialization, a NULL pointer dereference could occur, leading to a kernel crash. The issue was observed on Linux kernel version 5.3 and related to the mlx5_ib module handling events improperly.
References
- git.kernel.org/stable/c/716b555fc0580c2aa4c2c32ae4401c7e3ad9873e (opens in a new tab)
- git.kernel.org/stable/c/972e968aac0dce8fe8faad54f6106de576695d8e (opens in a new tab)
- git.kernel.org/stable/c/00ed215f593876385451423924fe0358c556179c (opens in a new tab)
- git.kernel.org/stable/c/9a28377a96fb299c180dd9cf0be3b0a038a52d4e (opens in a new tab)
- git.kernel.org/stable/c/23a3b32a274a8d6f33480d0eff436eb100981651 (opens in a new tab)
- git.kernel.org/stable/c/93fccfa71c66a4003b3d2fef3a38de7307e14a4e (opens in a new tab)
- git.kernel.org/stable/c/e8069711139249994450c214cec152b917b959e0 (opens in a new tab)
- git.kernel.org/stable/c/8edab8a72d67742f87e9dc2e2b0cdfddda5dc29a (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html (opens in a new tab)