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.
Product status
c1db52b9d27ee6e15a7136e67e4a21dc916cd07f before e64732ebff9e24258e7326f07adbe2f2b990daf8
c1db52b9d27ee6e15a7136e67e4a21dc916cd07f before 789415771422f4fb9f444044f86ecfaec55df1bd
c1db52b9d27ee6e15a7136e67e4a21dc916cd07f before c73c773b09e313278f9b960303a2809b8440bac6
c1db52b9d27ee6e15a7136e67e4a21dc916cd07f before 8c767727f331fb9455b0f81daad832b5925688cb
c1db52b9d27ee6e15a7136e67e4a21dc916cd07f before 14ca6952691fa8cc91e7644512e6ff24a595283f
c1db52b9d27ee6e15a7136e67e4a21dc916cd07f before 7858a95566f4ebf59524666683d2dcdba3fca968
c1db52b9d27ee6e15a7136e67e4a21dc916cd07f before c51a45ad9070a6d296174fcbe5c466352836c12b
c1db52b9d27ee6e15a7136e67e4a21dc916cd07f before 81cfe34d0630de4e23ae804dcc08fb6f861dc37d
c1db52b9d27ee6e15a7136e67e4a21dc916cd07f before 16d8fd74dbfca0ea58645cd2fca13be10cae3cdd
2.6.29
Any version before 2.6.29
5.4.297
5.10.241
5.15.190
6.1.148
6.6.102
6.12.42
6.15.10
6.16.1
6.17
References
git.kernel.org/...c/e64732ebff9e24258e7326f07adbe2f2b990daf8
git.kernel.org/...c/789415771422f4fb9f444044f86ecfaec55df1bd
git.kernel.org/...c/c73c773b09e313278f9b960303a2809b8440bac6
git.kernel.org/...c/8c767727f331fb9455b0f81daad832b5925688cb
git.kernel.org/...c/14ca6952691fa8cc91e7644512e6ff24a595283f
git.kernel.org/...c/7858a95566f4ebf59524666683d2dcdba3fca968
git.kernel.org/...c/c51a45ad9070a6d296174fcbe5c466352836c12b
git.kernel.org/...c/81cfe34d0630de4e23ae804dcc08fb6f861dc37d
git.kernel.org/...c/16d8fd74dbfca0ea58645cd2fca13be10cae3cdd
