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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-99027

net: team: stop reusing skb after queue override

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Status
Published
Published
Updated
Assigning organization
Linux

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 ...

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 8ff5105a2b9dd0ba596719b165c1827d101e5f1a to < 13be794844e368b4f8e8d33e97efa23c0a1ebaf8affected
  • 8ff5105a2b9dd0ba596719b165c1827d101e5f1a to < e40846f661075c4c653988363f38e6868bd0a240affected
  • 8ff5105a2b9dd0ba596719b165c1827d101e5f1a to < eaf49fba9cd054e84906d2416e8662194f763c9eaffected
  • 8ff5105a2b9dd0ba596719b165c1827d101e5f1a to < b21f20320fa2f3c683e3334d70de6bfd172e544aaffected
  • 8ff5105a2b9dd0ba596719b165c1827d101e5f1a to < 07a48cfceb3d0555710a9acb87c949500a7b4523affected
  • 8ff5105a2b9dd0ba596719b165c1827d101e5f1a to < 0c0568c9d35c47dc8e3ef6705d4c35a02bd88c4eaffected
  • 8ff5105a2b9dd0ba596719b165c1827d101e5f1a to < bed63353341d2d44cbad034001dd382cfe3a3892affected
  • 8ff5105a2b9dd0ba596719b165c1827d101e5f1a to < b7454f1940c5e6d92e753853c476a769e452f30aaffected

Linux Linux

Default version status: affected

  • 3.7affected
  • 0 to < 3.7unaffected
  • 5.10.273 to ≤ 5.10.*unaffected
  • 5.15.224 to ≤ 5.15.*unaffected
  • 6.1.191 to ≤ 6.1.*unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.114 to ≤ 6.12.*unaffected
  • 6.18.57 to ≤ 6.18.*unaffected
  • 7.2.11 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References