CVE-2026-98375
- Source
- https://cve.org/CVERecord?id=CVE-2026-98375
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98375.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-98375
- Downstream
- Published
- 2026-10-09T07:10:45Z
- Modified
- 2026-10-11T02:47:29Z
- Summary
- xen/netfront: drop RX packets with a short Ethernet header
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
xen/netfront: drop RX packets with a short Ethernet header
handle_incoming_queue() pulls pull_to bytes into the head before calling eth_type_trans(). pull_to is the length of the first RX slot, capped at RX_COPY_THRESHOLD, and that length comes from the backend. Nothing checks it against ETH_HLEN.
If the first slot is shorter than ETH_HLEN and more slots follow, the head ends up shorter than an Ethernet header while skb->len is longer, and eth_type_trans() BUG()s in __skb_pull(). If the whole packet is shorter than ETH_HLEN, eth_type_trans() reads the header past the end of the data instead.
Pull at least ETH_HLEN, and drop the packet if that fails, which also drops packets too short to hold an Ethernet header. This also checks the return value of the pull, which was ignored.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98375.json" }- References
-
- http://www.openwall.com/lists/oss-security/2026/10/09/3
- https://git.kernel.org/stable/c/089e58805c452e52179482b1025a8e309a57f801
- http://xenbits.xen.org/xsa/advisory-522.html
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98375.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-98375
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git