CVE-2025-71065: Linux kernel · f2fs: fix to avoid potential deadlock
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 6.8.0-1052.55~22.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:16 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.8.0-1052.55~22.04.1, 6.8.0-1059.65~22.04.1, 6.8.0-1058.65~22.04.1 +43
Exploitation evidence
Disclosed: evidence found.
CVE published 13 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 and should be applied to affected kernel versions. Users should update their linux-hwe-edge kernel to a fixed version and reboot to apply the changes. No additional mitigation is required beyond applying the official fix.
Description
A deadlock vulnerability in the Linux kernel's f2fs filesystem was identified and resolved. The issue involves a potential deadlock scenario caused by unsafe locking sequences among multiple kernel locks during filesystem operations. This deadlock can occur in kernel threads such as kswapd and during ioctl or file open operations, potentially causing system stalls. The vulnerability affects specific versions of the linux-hwe-edge kernel. A patch is available to fix this deadlock condition.
References
- ubuntu.com/security/CVE-2025-71065 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-71065 (opens in a new tab)
- git.kernel.org/linus/ca8b201f28547e28343a6f00a6e91fa8c09572fe (opens in a new tab)
- git.kernel.org/stable/c/6c3bab5c6261aa22c561ef56b7365959a90e7d91 (opens in a new tab)
- git.kernel.org/stable/c/86a85a7b622e6e8dba69810257733ce5eab5ed55 (opens in a new tab)
- git.kernel.org/stable/c/8bd6dff8b801abaa362272894bda795bf0cf1307 (opens in a new tab)
- git.kernel.org/stable/c/ca8b201f28547e28343a6f00a6e91fa8c09572fe (opens in a new tab)
- ubuntu.com/security/notices/USN-8177-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8179-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8177-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8183-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8184-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8179-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8185-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8183-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8179-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8203-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8204-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8185-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8179-4 (opens in a new tab)