CVE-2025-40352: Linux kernel · platform/mellanox: mlxbf-pmc: add sysfs_attr_init() to count_clock init
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 6.17.0-1007.7~24.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 14:05 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.17.0-1007.7~24.04.1, 6.17.0-1008.8~24.04.1, 6.17.0-1008.8 +6
Exploitation evidence
Disclosed: evidence found.
CVE published 16 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 25.10linuxpkg:deb/ubuntu/linux?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-oraclepkg:deb/ubuntu/linux-oracle?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and included in Linux kernel version 6.17.0-14.14 and later. Users should update their Linux kernel to the fixed versions as provided by their distribution vendor, such as Ubuntu's security updates (e.g., USN-8029-1). After updating, a system reboot is required to apply the fixes. Due to ABI changes, recompilation and reinstallation of third-party kernel modules may be necessary. Follow vendor instructions for updating and rebuilding kernel modules.
Description
A vulnerability in the Linux kernel's Mellanox platform driver (mlxbf_pmc) was resolved by adding a call to sysfs_attr_init() during count_clock initialization. This issue caused lock-related debug warnings during BlueField-3 SOC boot. The vulnerability is part of a broader set of Linux kernel security issues fixed in recent updates. The fixes are included in Linux kernel versions 6.17.0-14.14 and later. Users should update to the patched kernel versions to address this and other vulnerabilities.
References
- ubuntu.com/security/CVE-2025-40352 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-40352 (opens in a new tab)
- git.kernel.org/linus/a7b4747d8e0e7871c3d4971cded1dcc9af6af9e9 (opens in a new tab)
- git.kernel.org/stable/c/46be1f5aae82b4136f676528ff091629697c7719 (opens in a new tab)
- git.kernel.org/stable/c/a7b4747d8e0e7871c3d4971cded1dcc9af6af9e9 (opens in a new tab)
- ubuntu.com/security/notices/USN-8029-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8030-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8029-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8048-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8029-3 (opens in a new tab)