CVE-2025-68290: Linux kernel · most: usb: fix double free on late probe failure
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 5.15.0-1103.110~20.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 13:47 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 5.15.0-1103.110~20.04.1, 5.15.0-1110.119~20.04.1, 5.15.0-1103.112~20.04.1 +70
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.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 25.10linuxpkg:deb/ubuntu/linux@6.17.0-19.19?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-awspkg:deb/ubuntu/linux-aws@6.17.0-1009.9?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-azurepkg:deb/ubuntu/linux-azure@6.17.0-1010.10?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@6.17.0-1009.9?arch=source&distro=questingOther threats | Affected
| Fixed in
|
Ubuntu 25.10linux-oraclepkg:deb/ubuntu/linux-oracle@6.17.0-1009.9?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 Linux kernel versions. The vendor advisory from Ubuntu confirms that this issue has been fixed in updated kernel releases. Users should update to the fixed versions to remediate the vulnerability.
Description
A vulnerability in the Linux kernel's MOST USB subsystem caused double free and use-after-free errors during late probe failures. This issue arises from the subsystem's non-standard interface registration function, which frees interfaces on registration failures and deregistration, leading to memory management bugs. The flaw has been addressed in updated Linux kernel versions.
References
- ubuntu.com/security/CVE-2025-68290 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-68290 (opens in a new tab)
- git.kernel.org/linus/baadf2a5c26e802a46573eaad331b427b49aaa36 (opens in a new tab)
- git.kernel.org/stable/c/0dece48660be16918ecf2dbdc7193e8be03e1693 (opens in a new tab)
- git.kernel.org/stable/c/2274767dc02b756b25e3db1e31c0ed47c2a78442 (opens in a new tab)
- git.kernel.org/stable/c/8d8ffefe3d5d8b7b73efb866db61130107299c5c (opens in a new tab)
- git.kernel.org/stable/c/90e6ce2b1b19fb8b9d4afee69f40e4c6a4791154 (opens in a new tab)
- git.kernel.org/stable/c/993bfdc3842893c394de13c8200c338ebb979589 (opens in a new tab)
- git.kernel.org/stable/c/a4c4118c2af284835b16431bbfe77e0130c06fef (opens in a new tab)
- git.kernel.org/stable/c/baadf2a5c26e802a46573eaad331b427b49aaa36 (opens in a new tab)
- ubuntu.com/security/notices/USN-8094-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8095-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8100-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8095-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8094-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8095-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-4 (opens in a new tab)