CVE-2025-71190: Linux kernel · dmaengine: bcm-sba-raid: fix device leak on probe
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Low · fixed in 5.15.0-1105.112~20.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 16:39 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.15.0-1105.112~20.04.1, 5.15.0-1110.119~20.04.1, 5.15.0-1106.115~20.04.1 +70
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 31 Jan 2026
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.
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 from Ubuntu as part of their Linux kernel updates for the affected linux-azure versions. Users should apply the official updates and reboot their systems to ensure the fixes take effect. Due to an ABI change, recompilation and reinstallation of third-party kernel modules may be required. Follow the vendor advisory instructions for updating to the fixed package versions. No additional mitigation steps are indicated by the vendor.
Description
A vulnerability in the Linux kernel's dmaengine bcm-sba-raid driver caused a device reference leak during probe failures and driver unbind operations. This flaw was addressed by ensuring proper dropping of references to mailbox devices. The issue affects multiple Linux kernel versions used in the linux-azure distribution and has a medium severity rating with a CVSS score of 5.5. The vulnerability does not impact confidentiality or integrity but can cause availability issues. Fixes are available and included in updated Linux kernel packages distributed by Ubuntu.
References
- ubuntu.com/security/CVE-2025-71190 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-71190 (opens in a new tab)
- git.kernel.org/linus/7c3a46ebf15a9796b763a54272407fdbf945bed8 (opens in a new tab)
- git.kernel.org/stable/c/2ed1a9de1f2d727ccae5bc9cc7c63ee3519c0c8b (opens in a new tab)
- git.kernel.org/stable/c/7c3a46ebf15a9796b763a54272407fdbf945bed8 (opens in a new tab)
- git.kernel.org/stable/c/c80ca7bdff158401440741bdcf9175bd8608580b (opens in a new tab)
- git.kernel.org/stable/c/db6f1d6d31711e73e6a214c73e6a8fb4cda0483d (opens in a new tab)
- ubuntu.com/security/notices/USN-8162-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8180-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8180-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8186-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8187-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8188-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8180-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8180-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-8180-5 (opens in a new tab)
- ubuntu.com/security/notices/USN-8243-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8180-6 (opens in a new tab)
- ubuntu.com/security/notices/USN-8275-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8278-1 (opens in a new tab)