Description
In the Linux kernel, the following vulnerability has been resolved: wifi: rtl818x: Kill URBs before clearing tx status queue In rtl8187_stop() move the call of usb_kill_anchored_urbs() before clearing b_tx_status.queue. This change prevents callbacks from using already freed skb due to anchor was not killed before freeing such skb. BUG: kernel NULL pointer dereference, address: 0000000000000080 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP NOPTI CPU: 7 UID: 0 PID: 0 Comm: swapper/7 Not tainted 6.15.0 #8 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015 RIP: 0010:ieee80211_tx_status_irqsafe+0x21/0xc0 [mac80211] Call Trace: <IRQ> rtl8187_tx_cb+0x116/0x150 [rtl8187] __usb_hcd_giveback_urb+0x9d/0x120 usb_giveback_urb_bh+0xbb/0x140 process_one_work+0x19b/0x3c0 bh_worker+0x1a7/0x210 tasklet_action+0x10/0x30 handle_softirqs+0xf0/0x340 __irq_exit_rcu+0xcd/0xf0 common_interrupt+0x85/0xa0 </IRQ> Tested on RTL8187BvE device. Found by Linux Verification Center (linuxtesting.org) with SVACE.
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
c1db52b9d27ee6e15a7136e67e4a21dc916cd07f to < e64732ebff9e24258e7326f07adbe2f2b990daf8affectedc1db52b9d27ee6e15a7136e67e4a21dc916cd07f to < 789415771422f4fb9f444044f86ecfaec55df1bdaffectedc1db52b9d27ee6e15a7136e67e4a21dc916cd07f to < c73c773b09e313278f9b960303a2809b8440bac6affectedc1db52b9d27ee6e15a7136e67e4a21dc916cd07f to < 8c767727f331fb9455b0f81daad832b5925688cbaffectedc1db52b9d27ee6e15a7136e67e4a21dc916cd07f to < 14ca6952691fa8cc91e7644512e6ff24a595283faffectedc1db52b9d27ee6e15a7136e67e4a21dc916cd07f to < 7858a95566f4ebf59524666683d2dcdba3fca968affectedc1db52b9d27ee6e15a7136e67e4a21dc916cd07f to < c51a45ad9070a6d296174fcbe5c466352836c12baffectedc1db52b9d27ee6e15a7136e67e4a21dc916cd07f to < 81cfe34d0630de4e23ae804dcc08fb6f861dc37daffectedc1db52b9d27ee6e15a7136e67e4a21dc916cd07f to < 16d8fd74dbfca0ea58645cd2fca13be10cae3cddaffected
Linux Linux
Default version status: affected
2.6.29affected0 to < 2.6.29unaffected5.4.297 to ≤ 5.4.*unaffected5.10.241 to ≤ 5.10.*unaffected5.15.190 to ≤ 5.15.*unaffected6.1.148 to ≤ 6.1.*unaffected6.6.102 to ≤ 6.6.*unaffected6.12.42 to ≤ 6.12.*unaffected6.15.10 to ≤ 6.15.*unaffected6.16.1 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/e64732ebff9e24258e7326f07adbe2f2b990daf8 ↗
- https://git.kernel.org/stable/c/789415771422f4fb9f444044f86ecfaec55df1bd ↗
- https://git.kernel.org/stable/c/c73c773b09e313278f9b960303a2809b8440bac6 ↗
- https://git.kernel.org/stable/c/8c767727f331fb9455b0f81daad832b5925688cb ↗
- https://git.kernel.org/stable/c/14ca6952691fa8cc91e7644512e6ff24a595283f ↗
- https://git.kernel.org/stable/c/7858a95566f4ebf59524666683d2dcdba3fca968 ↗
- https://git.kernel.org/stable/c/c51a45ad9070a6d296174fcbe5c466352836c12b ↗
- https://git.kernel.org/stable/c/81cfe34d0630de4e23ae804dcc08fb6f861dc37d ↗
- https://git.kernel.org/stable/c/16d8fd74dbfca0ea58645cd2fca13be10cae3cdd ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗