CVE-2026-98375xen/netfront: drop RX packets with a short Ethernet header
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 0d160211965b79de989cf2d170985abeb8da5ec6 before 236a17caebcff31f75bec5ff4136bde2de944e40; from 0d160211965b79de989cf2d170985abeb8da5ec6 before 72d2f54367895d6e236b9857892e2e6b6036e067; from 0d160211965b79de989cf2d170985abeb8da5ec6 before e2b721bc30f40ffa7ccc36a56d4e8990b8c0538e; from 0d160211965b79de989cf2d170985abeb8da5ec6 before 089e58805c452e52179482b1025a8e309a57f801 | CNA record |
References
- https://git.kernel.org/stable/c/236a17caebcff31f75bec5ff4136bde2de944e40
- https://git.kernel.org/stable/c/72d2f54367895d6e236b9857892e2e6b6036e067
- https://git.kernel.org/stable/c/e2b721bc30f40ffa7ccc36a56d4e8990b8c0538e
- https://git.kernel.org/stable/c/089e58805c452e52179482b1025a8e309a57f801
- http://www.openwall.com/lists/oss-security/2026/10/09/3
- http://xenbits.xen.org/xsa/advisory-522.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.