CVE-2026-23377: Linux kernel · ice: change XDP RxQ frag_size from DMA write length to xdp.frame_sz
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 25 Mar 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
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 fix is available that corrects the frag_size calculation in the ice driver to use the buffer truesize instead of the DMA write length and updates zero-copy mode accordingly. Users should apply the updated Linux kernel versions containing this fix. Patch status is not explicitly confirmed in the input, so check the vendor advisory for current remediation guidance.
Description
A vulnerability in the Linux kernel's ice driver related to XDP RxQ frag_size handling has been resolved. The issue arises from incorrect assumptions about buffer sizes, leading to negative tailroom and potential kernel panic when using specific XDP socket tests with large packet sizes and offsets. The fix involves using the fill queue buffer truesize instead of the DMA write size and correcting zero-copy mode behavior.
References
- ubuntu.com/security/CVE-2026-23377 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-23377 (opens in a new tab)
- git.kernel.org/linus/e142dc4ef0f451b7ef99d09aaa84e9389af629d7 (opens in a new tab)
- git.kernel.org/stable/c/b0f05100e8795aadd1c0606bae9caefbda070d63 (opens in a new tab)
- git.kernel.org/stable/c/e142dc4ef0f451b7ef99d09aaa84e9389af629d7 (opens in a new tab)