CVE-2026-98233

net/packet: clear RX owner on VNET header error

State: Published
Severity: Not scored
Published: Oct 6, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before bb10a0084c03a94364aeec542beddc5d49b59f59Affected 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before b8c0cb3069058c2d67b5c7c833b2833381ecffdcAffected 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 2daa618e7ff19eefcbda281bc4c5998c4140f9cfAffected 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 23cd30498891d29a69ec9b75bd92f8a0f21f1342Affected 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 49a48a5aaf85fe69d2dc3fb334b4854fadf44e39Affected 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 805edbdcb8681da5f7ee43b3c3c809f7a8c31208Affected 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 693209a237fc548791cf402441db8b68d1da7d38Affected 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 33ff111d7ba3beb86e28938d6382bb5beabd865aAffected 2975472e042e0bbfeeabddc5023cb8c011ec5a07Affected 6fb0e4385928900ccb8697748555b3f54bba5193Affected 86137342fd4cf52882842aa8d1318b2661f08e8aAffected b06e4d3ed4044c2facf10a511d809f9aa29d960eAffected 4.14.175 to before 4.15Affected 4.19.114 to before 4.20Affected 5.4.29 to before 5.5Affected 5.5.14 to before 5.6Affected
LinuxLinux	5.6Affected before 5.6Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.112 through 6.12.Not affected 6.18.54 through 6.18.Not affected 7.2.8 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before bb10a0084c03a94364aeec542beddc5d49b59f59Affected
61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before b8c0cb3069058c2d67b5c7c833b2833381ecffdcAffected
61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 2daa618e7ff19eefcbda281bc4c5998c4140f9cfAffected
61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 23cd30498891d29a69ec9b75bd92f8a0f21f1342Affected
61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 49a48a5aaf85fe69d2dc3fb334b4854fadf44e39Affected
61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 805edbdcb8681da5f7ee43b3c3c809f7a8c31208Affected
61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 693209a237fc548791cf402441db8b68d1da7d38Affected
61fad6816fc10fb8793a925d5c1256d1c3db0cd2 to before 33ff111d7ba3beb86e28938d6382bb5beabd865aAffected
2975472e042e0bbfeeabddc5023cb8c011ec5a07Affected
6fb0e4385928900ccb8697748555b3f54bba5193Affected
86137342fd4cf52882842aa8d1318b2661f08e8aAffected
b06e4d3ed4044c2facf10a511d809f9aa29d960eAffected
4.14.175 to before 4.15Affected
4.19.114 to before 4.20Affected
5.4.29 to before 5.5Affected
5.5.14 to before 5.6Affected

LinuxLinux

5.6Affected
before 5.6Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.112 through 6.12.*Not affected
6.18.54 through 6.18.*Not affected
7.2.8 through 7.2.*Not affected
7.3 and laterNot affected

References

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