CVE-2025-68220: Linux kernel · net: ethernet: ti: netcp: Standardize knav_dma_open_channel to return NULL on error
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 11% 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, 5.15.0-1114.123~20.04.1 +71
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 that standardizes knav_dma_open_channel to return NULL on all error conditions, fixing the crash issue. Users should apply the updated Linux kernel versions that include this fix. The affected versions are prior to 5.15.0-1103.110~20.04.1, 5.15.0-1110.119~20.04.1, 5.15.0-1114.123~20.04.1, 5.15.0-1103.112~20.04.1, and 5.15.0-173.183~20.04.1. No additional mitigation is required beyond applying the official fix.
Description
A vulnerability in the Linux kernel's TI netcp ethernet driver was resolved by standardizing the knav_dma_open_channel function to consistently return NULL on error conditions. Previously, inconsistent error returns could cause crashes in netcp_free_navigator_resources. The issue affects limited code paths within netcp_core.c and has been fixed by reverting a prior commit to provide a less error-prone implementation.
References
- ubuntu.com/security/CVE-2025-68220 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-68220 (opens in a new tab)
- git.kernel.org/linus/90a88306eb874fe4bbdd860e6c9787f5bbc588b5 (opens in a new tab)
- git.kernel.org/stable/c/2572c358ee434ce4b994472cceeb4043cbff5bc5 (opens in a new tab)
- git.kernel.org/stable/c/3afeb909c3e2e0eb19b1e20506196e5f2d9c2259 (opens in a new tab)
- git.kernel.org/stable/c/8427218ecbd7f8559c37972e66cb0fa06e82353b (opens in a new tab)
- git.kernel.org/stable/c/90a88306eb874fe4bbdd860e6c9787f5bbc588b5 (opens in a new tab)
- git.kernel.org/stable/c/952637c5b9be64539cd0e13ef88db71a1df46373 (opens in a new tab)
- git.kernel.org/stable/c/af6b10a13fc0aee37df4a8292414cc055c263fa3 (opens in a new tab)
- git.kernel.org/stable/c/f9608637ecc165d7d6341df105aee44691461fb9 (opens in a new tab)
- git.kernel.org/stable/c/fbb53727ca789a8d27052aab4b77ca9e2a0fae2b (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)