CVE-2026-98233
Published: October 9, 2026Last modified: October 9, 2026
Description
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.
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.189-r0) |
| 25 LTS | linux-lts | Fixed (6.12.112-r0) | |
| Stream | linux-lts | Fixed (6.18.55-r0) |
References
- https://git.kernel.org/stable/c/23cd30498891d29a69ec9b75bd92f8a0f21f1342
- https://git.kernel.org/stable/c/2daa618e7ff19eefcbda281bc4c5998c4140f9cf
- https://git.kernel.org/stable/c/33ff111d7ba3beb86e28938d6382bb5beabd865a
- https://git.kernel.org/stable/c/49a48a5aaf85fe69d2dc3fb334b4854fadf44e39
- https://git.kernel.org/stable/c/693209a237fc548791cf402441db8b68d1da7d38
- https://git.kernel.org/stable/c/805edbdcb8681da5f7ee43b3c3c809f7a8c31208
- https://git.kernel.org/stable/c/b8c0cb3069058c2d67b5c7c833b2833381ecffdc
- https://git.kernel.org/stable/c/bb10a0084c03a94364aeec542beddc5d49b59f59