Security assessments indicate that CVE-2022-50133 presents a notable risk, potentially requiring prompt mitigation.
Status: Analyzed
Last updated: 🕕 18 Nov 2025, 18:08 UTC
Originally published on: 🕚 18 Jun 2025, 11:15 UTC
Time between publication and last update: 153 days
CVSS Release: version 3
nvd@nist.gov
Primary
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVE-2022-50133: In the Linux kernel, the following vulnerability has been resolved: usb: xhci_plat_remove: avoid NULL dereference Since commit 4736ebd7fcaff1eb8481c140ba494962847d6e0a ("usb: host: xhci-plat: omit shared hcd if either root hub has no ports") xhci->shared_hcd can be NULL, which causes the following Oops on reboot: [ 710.124450] systemd-shutdown[1]: Rebooting. [ 710.298861] xhci-hcd xhci-hcd.2.auto: remove, state 4 [ 710.304217] usb usb3: USB disconnect, device number 1 [ 710.317441] xhci-hcd xhci-hcd.2.auto: USB bus 3 deregistered [ 710.323280] xhci-hcd xhci-hcd.2.auto: remove, state 1 [ 710.328401] usb usb2: USB disconnect, device number 1 [ 710.333515] usb 2-3: USB disconnect, device number 2 [ 710.467649] xhci-hcd xhci-hcd.2.auto: USB bus 2 deregistered [ 710.475450] Unable to handle kernel NULL pointer dereference at virtual address 00000000000003b8 [ 710.484425] Mem abort info: [ 710.487265] ESR = 0x0000000096000004 [ 710.491060] EC = 0x25: DABT (current EL), IL = 32 bits [ 710.496427] SET = 0, FnV = 0 [ 710.499525] EA = 0, S1PTW = 0 [ 710.502716] FSC = 0x04: level 0 translation fault [ 710.507648] Data abort info: [ 710.510577] ISV = 0, ISS = 0x00000004 [ 710.514462] CM = 0, WnR = 0 [ 710.517480] user pgtable: 4k pages, 48-bit VAs, pgdp=00000008b0050000 [ 710.523976] [00000000000003b8] pgd=0000000000000000, p4d=0000000000000000 [ 710.530961] Internal error: Oops: 96000004 [#1] PREEMPT SMP [ 710.536551] Modules linked in: rfkill input_leds snd_soc_simple_card snd_soc_simple_card_utils snd_soc_nau8822 designware_i2s snd_soc_core dw_hdmi_ahb_audio snd_pcm_dmaengine arm_ccn panfrost ac97_bus gpu_sched snd_pcm at24 fuse configfs sdhci_of_dwcmshc sdhci_pltfm sdhci nvme led_class mmc_core nvme_core bt1_pvt polynomial tp_serio snd_seq_midi snd_seq_midi_event snd_seq snd_timer snd_rawmidi snd_seq_device snd soundcore efivarfs ipv6 [ 710.575286] CPU: 7 PID: 1 Comm: systemd-shutdow Not tainted 5.19.0-rc7-00043-gfd8619f4fd54 #1 [ 710.583822] Hardware name: T-Platforms TF307-MB/BM1BM1-A, BIOS 5.6 07/06/2022 [ 710.590972] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 710.597949] pc : usb_remove_hcd+0x34/0x1e4 [ 710.602067] lr : xhci_plat_remove+0x74/0x140 [ 710.606351] sp : ffff800009f3b7c0 [ 710.609674] x29: ffff800009f3b7c0 x28: ffff000800960040 x27: 0000000000000000 [ 710.616833] x26: ffff800008dc22a0 x25: 0000000000000000 x24: 0000000000000000 [ 710.623992] x23: 0000000000000000 x22: ffff000805465810 x21: ffff000805465800 [ 710.631149] x20: ffff000800f80000 x19: 0000000000000000 x18: ffffffffffffffff [ 710.638307] x17: ffff000805096000 x16: ffff00080633b800 x15: ffff000806537a1c [ 710.645465] x14: 0000000000000001 x13: 0000000000000000 x12: ffff00080378d6f0 [ 710.652621] x11: ffff00080041a900 x10: ffff800009b204e8 x9 : ffff8000088abaa4 [ 710.659779] x8 : ffff000800960040 x7 : ffff800009409000 x6 : 0000000000000001 [ 710.666936] x5 : ffff800009241000 x4 : ffff800009241440 x3 : 0000000000000000 [ 710.674094] x2 : ffff000800960040 x1 : ffff000800960040 x0 : 0000000000000000 [ 710.681251] Call trace: [ 710.683704] usb_remove_hcd+0x34/0x1e4 [ 710.687467] xhci_plat_remove+0x74/0x140 [ 710.691400] platform_remove+0x34/0x70 [ 710.695165] device_remove+0x54/0x90 [ 710.698753] device_release_driver_internal+0x200/0x270 [ 710.703992] device_release_driver+0x24/0x30 [ 710.708273] bus_remove_device+0xe0/0x16c [ 710.712293] device_del+0x178/0x390 [ 710.715797] platform_device_del.part.0+0x24/0x90 [ 710.720514] platform_device_unregister+0x30/0x50 [ 710.725232] dwc3_host_exit+0x20/0x30 [ 710.728907] dwc3_remove+0x174/0x1b0 [ 710.732494] platform_remove+0x34/0x70 [ 710.736254] device_remove+0x54/0x90 [ 710.739840] device_release_driver_internal+0x200/0x270 [ 710.745078] device_release_driver+0x24/0x30 [ 710.749359] bus_remove_device+0xe0/0x16c [ 710.753380] device_del+0x178/0x390 [ 710.756881] platform_device_del.part ---truncated---
The exploitability of CVE-2022-50133 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
CVE-2022-50133 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
Above is the CVSS Sub-score Breakdown for CVE-2022-50133, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
Below is the Impact Analysis for CVE-2022-50133, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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