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CVE-2022-50244— cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确处理设备注册失败情况，可能导致空指针取消引用。

AI Predicted 3.3 Difficulty: Hard EPSS 0.16% · P5

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux f204e0b8cedd7da1dfcfd05ed6b7692737e24029< 82e68432668ae75b4c814d160f6987ecb0681273 affected
f204e0b8cedd7da1dfcfd05ed6b7692737e24029< 82e5481428faf11c79b9c094dd24a1849bbf64ac affected
f204e0b8cedd7da1dfcfd05ed6b7692737e24029< c4b2e35df919d99bbbed033c2fa0b607f9f463b5 affected
f204e0b8cedd7da1dfcfd05ed6b7692737e24029< 361412dae1690d4b5df6f92fc943cdc773c95cbc affected
f204e0b8cedd7da1dfcfd05ed6b7692737e24029< 0f63c0ddc2ea20d783d29243f4dbe0f9e95dfdec affected
f204e0b8cedd7da1dfcfd05ed6b7692737e24029< 22511eefa61db26e12c97dd7ada3071dbdfcb004 affected
f204e0b8cedd7da1dfcfd05ed6b7692737e24029< 139abd4c626a6f7ce02789ed5f73aa2256e0542b affected
f204e0b8cedd7da1dfcfd05ed6b7692737e24029< 2f5fd31b2f24b9b8a80ab566fd8c4e1e94cb4339 affected
… +12 more rows
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I. Basic Information for CVE-2022-50244

Vulnerability Information
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Vulnerability Title
cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter() If device_register() fails in cxl_pci_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确处理设备注册失败情况，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux f204e0b8cedd7da1dfcfd05ed6b7692737e24029 ~ 82e68432668ae75b4c814d160f6987ecb0681273 -
Linux Linux 3.18 -

II. Public POCs for CVE-2022-50244

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III. Intelligence Information for CVE-2022-50244

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Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

CVE-2022-50235 9.8 CRITICAL NFSD: Protect against send buffer overflow in NFSv2 READDIR
CVE-2022-50335 9.8 CRITICAL 9p: set req refcount to zero to avoid uninitialized usage
CVE-2023-53192 9.8 CRITICAL vxlan: Fix nexthop hash size
CVE-2023-53253 8.8 HIGH HID: nvidia-shield: Reference hid_device devm allocation of input_dev name
CVE-2023-53226 8.8 HIGH wifi: mwifiex: Fix OOB and integer underflow when rx packets
CVE-2022-50241 8.8 HIGH NFSD: fix use-after-free on source server when doing inter-server copy
CVE-2023-53194 8.4 HIGH fs/ntfs3: Add length check in indx_get_root
CVE-2023-53213 8.1 HIGH wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()
CVE-2023-53186 8.1 HIGH skbuff: Fix a race between coalescing and releasing SKBs
CVE-2022-50303 7.8 HIGH drm/amdkfd: Fix double release compute pasid
CVE-2023-53254 7.8 HIGH cacheinfo: Fix shared_cpu_map to handle shared caches at different levels
CVE-2023-53170 7.8 HIGH net: dsa: Removed unneeded of_node_put in felix_parse_ports_node
CVE-2023-53252 7.8 HIGH Bluetooth: use RCU for hci_conn_params and iterate safely in hci_sync
CVE-2023-53176 7.8 HIGH serial: 8250: Reinit port->pm on port specific driver unbind
CVE-2023-53178 7.8 HIGH mm: fix zswap writeback race condition
CVE-2023-53179 7.8 HIGH netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
CVE-2023-53184 7.8 HIGH arm64/sme: Set new vector length before reallocating
CVE-2022-50315 7.8 HIGH ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS
CVE-2023-53189 7.8 HIGH ipv6/addrconf: fix a potential refcount underflow for idev
CVE-2023-53216 7.8 HIGH arm64: efi: Make efi_rt_lock a raw_spinlock

Showing top 20 of 210 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50244

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