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 ...
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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No data.
No data.
No data available yet.
No solution or workaround provided in the CVE record.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Fri, 23 Oct 2026 12:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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 ... | |
| Title | net: team: stop reusing skb after queue override | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-10-23T12:21:14.896Z
Reserved: 2026-09-25T10:25:14.386Z
Link: CVE-2026-99027
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-23T13:17:25.723
Modified: 2026-10-23T13:17:25.723
Link: CVE-2026-99027
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-10-23T15:15:14Z
No weakness.