CVE-2025-71225: Linux kernel · md: suspend array while updating raid_disks via sysfs
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.3 Medium · fixed in 6.8.0-1057.60~22.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 12:55 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.8.0-1057.60~22.04.1, 6.8.0-1059.65~22.04.1, 6.8.0-1060.63~22.04.1 +27
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 18 Feb 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@6.17.0-40.40?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-awspkg:deb/ubuntu/linux-aws@6.17.0-1019.19?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azurepkg:deb/ubuntu/linux-azure@6.17.0-1020.20?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde@6.17.0-1017.17?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-gcppkg:deb/ubuntu/linux-gcp@6.17.0-1020.22?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-oraclepkg:deb/ubuntu/linux-oracle@6.17.0-1018.18?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 should be applied. The vendor advisory from Ubuntu confirms that this issue is fixed in updated Linux kernel packages. Systems should be updated to the fixed kernel versions to mitigate this vulnerability. No additional mitigations are required beyond applying the official fix.
Description
A vulnerability in the Linux kernel's md (multiple device) subsystem related to updating raid_disks via sysfs has been resolved. The issue arises because the freeze_array() function does not fully wait for all queued r1bio structures to be released before modifications, potentially causing out-of-bounds memory access and mempool corruption. Suspending the array during updates via sysfs now prevents this issue. This flaw has been fixed in updated Linux kernel versions.
References
- ubuntu.com/security/CVE-2025-71225 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-71225 (opens in a new tab)
- git.kernel.org/linus/2cc583653bbe050bacd1cadcc9776d39bf449740 (opens in a new tab)
- git.kernel.org/stable/c/0107b18cd8ac17eb3e54786adc05a85cdbb6ef22 (opens in a new tab)
- git.kernel.org/stable/c/165d1359f945b72c5f90088f60d48ff46115269e (opens in a new tab)
- git.kernel.org/stable/c/2cc583653bbe050bacd1cadcc9776d39bf449740 (opens in a new tab)
- ubuntu.com/security/notices/USN-8278-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8289-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8296-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8296-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8289-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8278-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8393-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8440-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8499-1 (opens in a new tab)