CVE-2025-68781: Linux kernel · usb: phy: fsl-usb: Fix use-after-free in delayed work during device removal
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 6.17.0-1012.12~24.04.1 : 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 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.17.0-1012.12~24.04.1, 6.17.0-1013.13~24.04.1, 6.17.0-22.22~24.04.1 +11
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 by updating to a fixed Linux kernel version. The fix ensures that delayed work is properly canceled and completed before the associated memory is freed, preventing the use-after-free condition. Users should follow vendor instructions to update and reboot their systems to apply the fix. No additional mitigation is required beyond applying the official patch.
Description
A use-after-free vulnerability in the Linux kernel's Freescale USB OTG transceiver driver (fsl-usb) was fixed. The issue arises from a race condition during device removal where delayed work accessing freed memory can cause instability or crashes. The flaw was identified through static analysis and has been resolved by ensuring delayed work is properly canceled before memory deallocation. Multiple Linux kernel versions prior to 6.17.0-1012.12~24.04.1, 6.17.0-1013.13~24.04.1, 6.17.0-1018.18, 6.17.0-1020.20, and 6.17.0-22.22~24.04.1 are affected. A patch is available and should be applied.
References
- ubuntu.com/security/CVE-2025-68781 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-68781 (opens in a new tab)
- git.kernel.org/linus/41ca62e3e21e48c2903b3b45e232cf4f2ff7434f (opens in a new tab)
- git.kernel.org/stable/c/2e7c47e2eb3cfeadf78a1ccbac8492c60d508f23 (opens in a new tab)
- git.kernel.org/stable/c/319f7a85b3c4e34ac2fe083eb146fe129a556317 (opens in a new tab)
- git.kernel.org/stable/c/41ca62e3e21e48c2903b3b45e232cf4f2ff7434f (opens in a new tab)
- git.kernel.org/stable/c/4476c73bbbb09b13a962176fca934b32d3954a2e (opens in a new tab)
- git.kernel.org/stable/c/69f9a0701abc3d1f8225074c56c27e6c16a37222 (opens in a new tab)
- ubuntu.com/security/notices/USN-8177-1 (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-8183-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8245-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8257-1 (opens in a new tab)