Answer in brief
CVE-2026-98233 records a Unknown severity vulnerability in net/packet: clear RX owner on VNET header error. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <bb10a0084c03a94364aeec542beddc5d49b59f59 || >=61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <b8c0cb3069058c2d67b5c7c833b2833381ecffdc || >=61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <2daa618e7ff19eefcbda281bc4c5998c4140f9cf || >=61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <23cd30498891d29a69ec9b75bd92f8a0f21f1342 || >=61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <49a48a5aaf85fe69d2dc3fb334b4854fadf44e39 || >=61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <805edbdcb8681da5f7ee43b3c3c809f7a8c31208 || >=61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <693209a237fc548791cf402441db8b68d1da7d38 || >=61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <33ff111d7ba3beb86e28938d6382bb5beabd865a || 2975472e042e0bbfeeabddc5023cb8c011ec5a07 || 6fb0e4385928900ccb8697748555b3f54bba5193 || 86137342fd4cf52882842aa8d1318b2661f08e8a || b06e4d3ed4044c2facf10a511d809f9aa29d960e || >=4.14.175 <4.15 || >=4.19.114 <4.20 || >=5.4.29 <5.5 || >=5.5.14 <5.6 | bb10a0084c03a94364aeec542beddc5d49b59f59, b8c0cb3069058c2d67b5c7c833b2833381ecffdc, 2daa618e7ff19eefcbda281bc4c5998c4140f9cf, 23cd30498891d29a69ec9b75bd92f8a0f21f1342, 49a48a5aaf85fe69d2dc3fb334b4854fadf44e39, 805edbdcb8681da5f7ee43b3c3c809f7a8c31208, 693209a237fc548791cf402441db8b68d1da7d38, 33ff111d7ba3beb86e28938d6382bb5beabd865a, 4.15, 4.20, 5.5, 5.6 |
| Linux/Linuxgeneric | 5.6 | Not reported |
Published upstream
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 6, 2026
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.
Quoted source text, attributed separately from HOL analysis.