Answer in brief
CVE-2026-99027 records a Unknown severity vulnerability in net: team: stop reusing skb after queue override. 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 | >=8ff5105a2b9dd0ba596719b165c1827d101e5f1a <b21f20320fa2f3c683e3334d70de6bfd172e544a || >=8ff5105a2b9dd0ba596719b165c1827d101e5f1a <07a48cfceb3d0555710a9acb87c949500a7b4523 || >=8ff5105a2b9dd0ba596719b165c1827d101e5f1a <0c0568c9d35c47dc8e3ef6705d4c35a02bd88c4e || >=8ff5105a2b9dd0ba596719b165c1827d101e5f1a <bed63353341d2d44cbad034001dd382cfe3a3892 || >=8ff5105a2b9dd0ba596719b165c1827d101e5f1a <b7454f1940c5e6d92e753853c476a769e452f30a | b21f20320fa2f3c683e3334d70de6bfd172e544a, 07a48cfceb3d0555710a9acb87c949500a7b4523, 0c0568c9d35c47dc8e3ef6705d4c35a02bd88c4e, bed63353341d2d44cbad034001dd382cfe3a3892, b7454f1940c5e6d92e753853c476a769e452f30a |
| Linux/Linuxgeneric | 3.7 | Not reported |
Published upstream
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 23, 2026
In the Linux kernel, the following vulnerability has been resolved: net: team: stop reusing skb after queue override A nonzero dev_queue_xmit() result does not return ownership of the skb. When an override port's qdisc drops it, the queue override helper used to try another port or the mode transmit op with the freed skb. Return the handoff decision separately from transmit success. Select only the first override port under RCU and stop after handing it the skb, regardless of the lower transmit result. Keep the existing success and drop accounting. BUG: KASAN: slab-use-after-free in sk_skb_reason_drop Write of size 4 by task poc/5040 sk_skb_reason_drop (net/core/skbuff.c:1240) dev_kfree_skb_any_reason (net/core/dev.c:3470) ab_transmit (drivers/net/team/team_mode_activebackup.c:49) team_xmit (drivers/net/team/team_core.c:1849) __dev_direct_xmit (net/core/dev.c:4934) Freed by task 5040: __tcf_kfree_skb_list (net/sched/sch_generic.c:43) __dev_queue_xmit (net/core/dev.c:4831) team_xmit (drivers/net/team/team_core.c:1846) Kernel panic - not syncing: KASAN: panic_on_warn set ...
Quoted source text, attributed separately from HOL analysis.