CVE-2026-45922: Linux kernel · RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in ee998cdbff6680891b0efd9d6ce53a388e5342c3 : update Linux kernel when convenient.
Data as of 6 Nov 2026, 16:20 UTC
Rated Low 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, 2026-11-06.
- Patch
- Available – fixed in ee998cdbff6680891b0efd9d6ce53a388e5342c3, b3a10eca24fcfe913c0875e620f19596001bd6dc, b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2 +1
Exploitation evidence
Disclosed: evidence found.
CVE published 27 May 2026
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 6 Nov 2026.
What to do
Upgrade Linux kernel to ee998cdbff6680891b0efd9d6ce53a388e5342c3, b3a10eca24fcfe913c0875e620f19596001bd6dc, b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2 or 9b9d253908478f504297ac283c514e5953ddafa6.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been applied in the Linux kernel source code as indicated by the fixed commit hashes. Users and administrators should update to the patched kernel versions containing these fixes to remediate the memory leak. No additional mitigation actions are specified or required.
Description
A memory leak vulnerability was identified and fixed in the Linux kernel's RDMA/mlx5 component, specifically in the GET_DATA_DIRECT_SYSFS_PATH handler. The issue occurs when the device path length exceeds the output buffer length, causing allocated memory not to be freed properly. This flaw was addressed by adding a kfree() call to the error path to prevent the leak.
References
- git.kernel.org/stable/c/ee998cdbff6680891b0efd9d6ce53a388e5342c3 (opens in a new tab)
- git.kernel.org/stable/c/b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2 (opens in a new tab)
- git.kernel.org/stable/c/b3a10eca24fcfe913c0875e620f19596001bd6dc (opens in a new tab)
- git.kernel.org/stable/c/9b9d253908478f504297ac283c514e5953ddafa6 (opens in a new tab)