CVE-2026-98233
In the Linux kernel, the following vulnerability has been resolved: net/packet: clear RX owner on VNET header error Commit 61fad6816fc1 ("net/packet: tpacket_rcv: avoid a producer race condition") added rx_owner_map and made tpacket_rcv() claim a V1 or V2 ring slot before converting the virtio-net header. If the conversion fails, the drop path leaves the slot claimed. With a one-frame TPACKET_V2 ring, an unsupported UDP GSO packet leaves the only slot unavailable, so the ring also drops the next valid packet. Clear the ownership bit on this error path. TPACKET_V3 already clears its block state here.
Affected versions
Linux kernel versions
4.14.175,
4.19.114,
5.4.29,
5.5.14,
5.6
and later are affected. Fixed in
5.10.271,
5.15.222,
6.1.189,
6.6.158,
6.12.112,
6.18.54,
7.2.8,
7.3-rc4
and their respective stable series.
References
8 totalFrequently asked questions
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What is CVE-2026-98233?
CVE-2026-98233 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.14.175 onward and has been patched in 5.10.271, 5.15.222, 6.1.189 and others. CVE-2026-98233 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-98233?
Yes. CVE-2026-98233 has been patched. Fixed versions include 5.10.271, 5.15.222, 6.1.189 and others. If you are running Linux kernel 4.14.175 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-98233 actively exploited?
No. CVE-2026-98233 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.