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CVE-2022-50311— cxl: Fix refcount leak in cxl_calc_capp_routing

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，该漏洞源于未正确释放of_get_next_parent返回的节点指针，可能导致引用计数泄漏。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1595.001 · Scanning IP Blocks

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux f24be42aab37c6d07c05126673138e06223a6399< c9bebc503881c1391f6c4f820134884adecf1519 affected
f24be42aab37c6d07c05126673138e06223a6399< ee870f72465015327ad96204b0e92450d04870cd affected
f24be42aab37c6d07c05126673138e06223a6399< f2d60f6ba173cded65081cee690b67802395a479 affected
f24be42aab37c6d07c05126673138e06223a6399< 81c8bbf5b2b5f0c8030fff1716c00849cda8571a affected
f24be42aab37c6d07c05126673138e06223a6399< 6a310e8db5409676b4b3e6c1f54dff174e4fd04d affected
f24be42aab37c6d07c05126673138e06223a6399< 651e8bc9d0418c20a1989b7c078c64c2a6346fa3 affected
f24be42aab37c6d07c05126673138e06223a6399< 2d7b6580384e6d65419933ddc525bd176095da54 affected
f24be42aab37c6d07c05126673138e06223a6399< 1d09697ff22908ae487fc8c4fbde1811732be523 affected
… +10 more rows
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I. Basic Information for CVE-2022-50311

Vulnerability Information
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Vulnerability Title
cxl: Fix refcount leak in cxl_calc_capp_routing
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cxl: Fix refcount leak in cxl_calc_capp_routing of_get_next_parent() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. This function only calls of_node_put() in normal path, missing it in the error path. Add missing of_node_put() to avoid refcount leak.
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，该漏洞源于未正确释放of_get_next_parent返回的节点指针，可能导致引用计数泄漏。
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 f24be42aab37c6d07c05126673138e06223a6399 ~ c9bebc503881c1391f6c4f820134884adecf1519 -
Linux Linux 4.12 -

II. Public POCs for CVE-2022-50311

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III. Intelligence Information for CVE-2022-50311

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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-2023-53254 7.8 HIGH cacheinfo: Fix shared_cpu_map to handle shared caches at different levels
CVE-2023-53219 7.8 HIGH media: netup_unidvb: fix use-after-free at del_timer()
CVE-2023-53252 7.8 HIGH Bluetooth: use RCU for hci_conn_params and iterate safely in hci_sync
CVE-2023-53170 7.8 HIGH net: dsa: Removed unneeded of_node_put in felix_parse_ports_node
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-2023-53187 7.8 HIGH btrfs: fix use-after-free of new block group that became unused
CVE-2025-39800 7.8 HIGH btrfs: abort transaction on unexpected eb generation at btrfs_copy_root()

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-2022-50311

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