CVE-2025-38604

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxc1db52b9d27ee6e15a7136e67e4a21dc916cd07f < e64732ebff9e24258e7326f07adbe2f2b990daf8affected
LinuxLinuxc1db52b9d27ee6e15a7136e67e4a21dc916cd07f < 789415771422f4fb9f444044f86ecfaec55df1bdaffected
LinuxLinuxc1db52b9d27ee6e15a7136e67e4a21dc916cd07f < c73c773b09e313278f9b960303a2809b8440bac6affected
LinuxLinuxc1db52b9d27ee6e15a7136e67e4a21dc916cd07f < 8c767727f331fb9455b0f81daad832b5925688cbaffected
LinuxLinuxc1db52b9d27ee6e15a7136e67e4a21dc916cd07f < 14ca6952691fa8cc91e7644512e6ff24a595283faffected
LinuxLinuxc1db52b9d27ee6e15a7136e67e4a21dc916cd07f < 7858a95566f4ebf59524666683d2dcdba3fca968affected
LinuxLinuxc1db52b9d27ee6e15a7136e67e4a21dc916cd07f < c51a45ad9070a6d296174fcbe5c466352836c12baffected
LinuxLinuxc1db52b9d27ee6e15a7136e67e4a21dc916cd07f < 81cfe34d0630de4e23ae804dcc08fb6f861dc37daffected
LinuxLinuxc1db52b9d27ee6e15a7136e67e4a21dc916cd07f < 16d8fd74dbfca0ea58645cd2fca13be10cae3cddaffected
LinuxLinux2.6.29affected
LinuxLinux0 < 2.6.29unaffected
LinuxLinux5.4.297 <= 5.4.*unaffected
LinuxLinux5.10.241 <= 5.10.*unaffected
LinuxLinux5.15.190 <= 5.15.*unaffected
LinuxLinux6.1.148 <= 6.1.*unaffected
LinuxLinux6.6.102 <= 6.6.*unaffected
LinuxLinux6.12.42 <= 6.12.*unaffected
LinuxLinux6.15.10 <= 6.15.*unaffected
LinuxLinux6.16.1 <= 6.16.*unaffected
LinuxLinux6.17 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

References