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CVE-2022-50235— NFSD: Protect against send buffer overflow in NFSv2 READDIR

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，该漏洞源于未限制count参数，可能导致缓冲区溢出攻击。

CVSS 9.8 · Critical EPSS 0.43% · P36

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 9e291a6a28d32545ed2fd959a8165144d1724df1< 0e57d696f60dee6117a8ace0cac7c5761d375277 affected
eabc0aab98e5218ceecd82069b0d6fdfff5ee885< dc7f225090c29a5f3b9419b1af32846a201555e7 affected
53b1119a6e5028b125f431a0116ba73510d82a72< c2a878095b5c6f04f90553a3c45872f990dab14e affected
53b1119a6e5028b125f431a0116ba73510d82a72< f59c74df82f6ac9d2ea4e01aa3ae7c6c4481652d affected
53b1119a6e5028b125f431a0116ba73510d82a72< 00b4492686e0497fdb924a9d4c8f6f99377e176c affected
5.15.12< 5.15.75 affected
5.16 affected
< 5.16 unaffected
… +4 more rows
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I. Basic Information for CVE-2022-50235

Vulnerability Information
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Vulnerability Title
NFSD: Protect against send buffer overflow in NFSv2 READDIR
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: NFSD: Protect against send buffer overflow in NFSv2 READDIR Restore the previous limit on the @count argument to prevent a buffer overflow attack.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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，该漏洞源于未限制count参数，可能导致缓冲区溢出攻击。
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 9e291a6a28d32545ed2fd959a8165144d1724df1 ~ 0e57d696f60dee6117a8ace0cac7c5761d375277 -
Linux Linux 5.16 -

II. Public POCs for CVE-2022-50235

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III. Intelligence Information for CVE-2022-50235

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

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-2023-53252 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-2023-53189 7.8 HIGH ipv6/addrconf: fix a potential refcount underflow for idev
CVE-2023-53222 7.8 HIGH jfs: jfs_dmap: Validate db_l2nbperpage while mounting
CVE-2023-53236 7.8 HIGH iommufd: Do not corrupt the pfn list when doing batch carry

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-2022-50235

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