CVE-2025-68750: Linux kernel · usb: potential integer overflow in usbg_make_tpg()
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 5.15.0-1092.99~20.04.1 : 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
- 0.1% 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 5.15.0-1092.99~20.04.1, 5.15.0-1096.105~20.04.1, 5.15.0-1114.123~20.04.1 +59
Exploitation evidence
Disclosed: evidence found.
CVE published 24 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 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde@6.17.0-1017.17?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinuxpkg:deb/ubuntu/linux@6.8.0-100.100?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-awspkg:deb/ubuntu/linux-aws@6.8.0-1046.49?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-aws-6.14pkg:deb/ubuntu/linux-aws-6.14@6.14.0-1015.15~24.04.1?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure@6.8.0-1046.52?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11@6.11.0-1018.18~24.04.1?arch=source&distro=nobleOther 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 vulnerability is fixed by aligning the variable types to prevent integer overflow in usbg_make_tpg(). Users should update their Linux kernel to the fixed versions as indicated in the vendor advisory. No additional mitigation steps are required beyond applying the official kernel updates.
Description
A potential integer overflow vulnerability in the Linux kernel's USB subsystem was identified in the function usbg_make_tpg(). The issue arises because the variable tpgt, defined as unsigned long, is assigned to a 16-bit unsigned integer field, which can cause overflow if tpgt exceeds 65535. This vulnerability has been addressed by modifying the variable type and adjusting the relevant code. The fix is included in Linux kernel updates. No known exploits are reported in the wild.
References
- ubuntu.com/security/CVE-2025-68750 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-68750 (opens in a new tab)
- git.kernel.org/linus/153874010354d050f62f8ae25cbb960c17633dc5 (opens in a new tab)
- git.kernel.org/stable/c/0861b9cb2ff519b7c5a3b1dd52a343e18c4efb24 (opens in a new tab)
- git.kernel.org/stable/c/153874010354d050f62f8ae25cbb960c17633dc5 (opens in a new tab)
- git.kernel.org/stable/c/358d5ba08f1609c34a054aed88c431844d09705a (opens in a new tab)
- git.kernel.org/stable/c/603a83e5fee38a950bfcfb2f36449311fa00a474 (opens in a new tab)
- git.kernel.org/stable/c/620a5e1e84a3a7004270703a118d33eeb1c0f368 (opens in a new tab)
- git.kernel.org/stable/c/6722e080b5b39ab7471386c73d0c1b39572f943c (opens in a new tab)
- git.kernel.org/stable/c/6f77e344515b5258edb3988188311464209b1c7c (opens in a new tab)
- git.kernel.org/stable/c/a33f507f36d5881f602dab581ab0f8d22b49762c (opens in a new tab)
- ubuntu.com/security/notices/USN-8028-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8028-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8031-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8028-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8028-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-8028-5 (opens in a new tab)
- ubuntu.com/security/notices/USN-8031-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8028-6 (opens in a new tab)
- ubuntu.com/security/notices/USN-8031-3 (opens in a new tab)