CVE-2025-39968: Linux hwe edge · In the Linux kernel, the following vulnerability has been resolved: i40e: add max boundary check for VF filters There is no check for max filters
Affects linux-hwe-edgeSource GCVE Database
Not known to be exploited · CVSS 7.3 Medium · fixed in 5.15.0-1110.119~20.04.1 : update linux-hwe-edge when convenient.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.15.0-1110.119~20.04.1, 5.15.0-1100.109~20.04.1, 5.15.0-1100.107~20.04.2 +2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:HExploitation evidence
Disclosed: evidence found.
CVE published 15 Oct 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 2026-10-25.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| linux-hwe-edge | Affected
| Fixed in
|
AI-suggested
A fix has been implemented in the Linux kernel by adding a maximum boundary check for VF filters in the i40e driver. Users and administrators should apply the official Linux kernel updates that include this fix once available.
Description
In the Linux kernel, the following vulnerability has been resolved: i40e: add max boundary check for VF filters There is no check for max filters that VF can request. Add it.
References
- nvd.nist.gov/vuln/detail/CVE-2025-39968 (opens in a new tab)
- git.kernel.org/stable/c/02aae5fcdd34c3a55a243d80a1b328a35852a35c (opens in a new tab)
- git.kernel.org/stable/c/77a35be582dff4c80442ebcdce24d45eed8a6ce4 (opens in a new tab)
- git.kernel.org/stable/c/8b13df5aa877b9e4541e301a58a84c42d84d2d9a (opens in a new tab)
- git.kernel.org/stable/c/9176e18681cb0d34c5acc87bda224f5652af2ab8 (opens in a new tab)
- git.kernel.org/stable/c/cb79fa7118c150c3c76a327894bb2eb878c02619 (opens in a new tab)
- git.kernel.org/stable/c/d33e5d6631ac4fddda235a7815babc9d3f124299 (opens in a new tab)
- git.kernel.org/stable/c/e490d8c5a54e0dd1ab22417d72c3a7319cf0f030 (opens in a new tab)
- git.kernel.org/stable/c/edecce7abd7152b48e279b4fa0a883d1839bb577 (opens in a new tab)
- ubuntu.com/security/CVE-2025-39968 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-39968 (opens in a new tab)
- git.kernel.org/linus/cb79fa7118c150c3c76a327894bb2eb878c02619 (opens in a new tab)
- ubuntu.com/security/notices/USN-8033-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8033-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8033-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8034-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8033-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-8033-5 (opens in a new tab)
- ubuntu.com/security/notices/USN-8034-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8033-6 (opens in a new tab)
- ubuntu.com/security/notices/USN-8033-7 (opens in a new tab)