CVE-2026-98233

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux61fad6816fc10fb8793a925d5c1256d1c3db0cd2 < bb10a0084c03a94364aeec542beddc5d49b59f59affected
LinuxLinux61fad6816fc10fb8793a925d5c1256d1c3db0cd2 < b8c0cb3069058c2d67b5c7c833b2833381ecffdcaffected
LinuxLinux61fad6816fc10fb8793a925d5c1256d1c3db0cd2 < 2daa618e7ff19eefcbda281bc4c5998c4140f9cfaffected
LinuxLinux61fad6816fc10fb8793a925d5c1256d1c3db0cd2 < 23cd30498891d29a69ec9b75bd92f8a0f21f1342affected
LinuxLinux61fad6816fc10fb8793a925d5c1256d1c3db0cd2 < 49a48a5aaf85fe69d2dc3fb334b4854fadf44e39affected
LinuxLinux61fad6816fc10fb8793a925d5c1256d1c3db0cd2 < 805edbdcb8681da5f7ee43b3c3c809f7a8c31208affected
LinuxLinux61fad6816fc10fb8793a925d5c1256d1c3db0cd2 < 693209a237fc548791cf402441db8b68d1da7d38affected
LinuxLinux61fad6816fc10fb8793a925d5c1256d1c3db0cd2 < 33ff111d7ba3beb86e28938d6382bb5beabd865aaffected
LinuxLinux2975472e042e0bbfeeabddc5023cb8c011ec5a07affected
LinuxLinux6fb0e4385928900ccb8697748555b3f54bba5193affected
LinuxLinux86137342fd4cf52882842aa8d1318b2661f08e8aaffected
LinuxLinuxb06e4d3ed4044c2facf10a511d809f9aa29d960eaffected
LinuxLinux4.14.175 < 4.15affected
LinuxLinux4.19.114 < 4.20affected
LinuxLinux5.4.29 < 5.5affected
LinuxLinux5.5.14 < 5.6affected
LinuxLinux5.6affected
LinuxLinux0 < 5.6unaffected
LinuxLinux5.10.271 <= 5.10.*unaffected
LinuxLinux5.15.222 <= 5.15.*unaffected
LinuxLinux6.1.189 <= 6.1.*unaffected
LinuxLinux6.6.158 <= 6.6.*unaffected
LinuxLinux6.12.112 <= 6.12.*unaffected
LinuxLinux6.18.54 <= 6.18.*unaffected
LinuxLinux7.2.8 <= 7.2.*unaffected
LinuxLinux7.3-rc4 <= *unaffected

Weaknesses

References