In the Linux kernel, the following vulnerability has been resolved:
nfc: pn533: initialize struct pn533_out_arg properly
struct pn533_out_arg used as a temporary context for out_urb is not initialized properly. Its uninitialized 'phy' field can be dereferenced in error cases inside pn533_out_complete() callback function. It causes the following failure:
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.2.0-rc3-next-20230110-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:pn533_out_complete.cold+0x15/0x44 drivers/nfc/pn533/usb.c:441 Call Trace: <IRQ> __usb_hcd_giveback_urb+0x2b6/0x5c0 drivers/usb/core/hcd.c:1671 usb_hcd_giveback_urb+0x384/0x430 drivers/usb/core/hcd.c:1754 dummy_timer+0x1203/0x32d0 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1da/0x800 kernel/time/timer.c:1700 expire_timers+0x234/0x330 kernel/time/timer.c:1751 __run_timers kernel/time/timer.c:2022 [inline] __run_timers kernel/time/timer.c:1995 [inline] run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035 __do_softirq+0x1fb/0xaf6 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1107
Initialize the field with the pn533_usb_phy currently used.
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | May 5, 2025 | May 2, 2025 |
| Ubuntu | — | Upgrade linux-intel-iotgUpgrade linux-aws-5.15Upgrade linux-bluefieldUpgrade linux-oracle-5.4Upgrade linux-iotUpgrade linux-intel-iotg-5.15Upgrade linux-aws-5.4Upgrade linux-realtimeUpgrade linux-raspiUpgrade linux-kvmUpgrade linux-nvidia-tegraUpgrade linux-lowlatencyUpgrade linux-awsUpgrade linux-nvidia-tegra-5.15Upgrade linux-raspi-5.4Upgrade linux-lowlatency-hwe-5.15Upgrade linux-gcp-5.15Upgrade linux-gkeUpgrade linux-azureUpgrade linux-hwe-5.15Upgrade linux-gcp-fipsUpgrade linux-xilinx-zynqmpUpgrade linux-ibm-5.4Upgrade linux-gcpUpgrade linux-azure-5.15Upgrade linux-aws-fipsUpgrade linuxUpgrade linux-nvidia-tegra-igxUpgrade linux-ibmUpgrade linux-riscv-5.15Upgrade linux-gcp-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-fipsUpgrade linux-gkeopUpgrade linux-azure-fipsUpgrade linux-azure-5.4Upgrade linux-ibm-5.15Upgrade linux-oracleUpgrade linux-hwe-5.4Upgrade linux-nvidiaUpgrade linux-oracle-5.15 | May 8, 2025 | May 2, 2025 |
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