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CVE-2022-50410— NFSD: Protect against send buffer overflow in NFSv2 READ

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NFSv2 READ操作中未正确处理发送缓冲区，可能导致缓冲区溢出。

CVSS 9.8 · Critical EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 4452435948424e5322c2a2fefbdc2cf3732cc45d< 2007867c5874134f2271eb276398208070049dd3 affected
4452435948424e5322c2a2fefbdc2cf3732cc45d< 2be9331ca6061bc6ea32247266f45b8b21030244 affected
4452435948424e5322c2a2fefbdc2cf3732cc45d< ea4c3eee0fd72fcedaa238556044825639cd3607 affected
4452435948424e5322c2a2fefbdc2cf3732cc45d< 1868332032eccbab8c1878a0d918193058c0a905 affected
4452435948424e5322c2a2fefbdc2cf3732cc45d< 401bc1f90874280a80b93f23be33a0e7e2d1f912 affected
2.6.19 affected
< 2.6.19 unaffected
5.10.220≤ 5.10.* unaffected
… +4 more rows
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I. Basic Information for CVE-2022-50410

Vulnerability Information
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Vulnerability Title
NFSD: Protect against send buffer overflow in NFSv2 READ
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 READ Since before the git era, NFSD has conserved the number of pages held by each nfsd thread by combining the RPC receive and send buffers into a single array of pages. This works because there are no cases where an operation needs a large RPC Call message and a large RPC Reply at the same time. Once an RPC Call has been received, svc_process() updates svc_rqst::rq_res to describe the part of rq_pages that can be used for constructing the Reply. This means that the send buffer (rq_res) shrinks when the received RPC record containing the RPC Call is large. A client can force this shrinkage on TCP by sending a correctly- formed RPC Call header contained in an RPC record that is excessively large. The full maximum payload size cannot be constructed in that case.
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NFSv2 READ操作中未正确处理发送缓冲区，可能导致缓冲区溢出。
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 4452435948424e5322c2a2fefbdc2cf3732cc45d ~ 2007867c5874134f2271eb276398208070049dd3 -
Linux Linux 2.6.19 -

II. Public POCs for CVE-2022-50410

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III. Intelligence Information for CVE-2022-50410

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Same Patch Batch · Linux · 2025-09-18 · 121 CVEs total

CVE-2022-50401 9.8 CRITICAL nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure
CVE-2023-53382 9.8 CRITICAL net/smc: Reset connection when trying to use SMCRv2 fails.
CVE-2022-50419 8.8 HIGH Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times
CVE-2023-53431 8.8 HIGH scsi: ses: Handle enclosure with just a primary component gracefully
CVE-2023-53432 8.8 HIGH firewire: net: fix use after free in fwnet_finish_incoming_packet()
CVE-2022-50413 8.8 HIGH wifi: mac80211: fix use-after-free
CVE-2023-53374 8.8 HIGH Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
CVE-2022-50386 8.8 HIGH Bluetooth: L2CAP: Fix user-after-free
CVE-2023-53372 8.2 HIGH sctp: fix a potential overflow in sctp_ifwdtsn_skip
CVE-2023-53387 7.8 HIGH scsi: ufs: core: Fix device management cmd timeout flow
CVE-2022-50399 7.8 HIGH media: atomisp: prevent integer overflow in sh_css_set_black_frame()
CVE-2023-53394 7.8 HIGH net/mlx5e: xsk: Fix crash on regular rq reactivation
CVE-2022-50417 7.8 HIGH drm/panfrost: Fix GEM handle creation ref-counting
CVE-2023-53429 7.8 HIGH btrfs: don't check PageError in __extent_writepage
CVE-2023-53373 7.8 HIGH crypto: seqiv - Handle EBUSY correctly
CVE-2023-53378 7.8 HIGH drm/i915/dpt: Treat the DPT BO as a framebuffer
CVE-2023-53386 7.8 HIGH Bluetooth: Fix potential use-after-free when clear keys
CVE-2023-53388 7.8 HIGH drm/mediatek: Clean dangling pointer on bind error path
CVE-2023-53426 7.8 HIGH xsk: Fix xsk_diag use-after-free error during socket cleanup
CVE-2023-53398 7.8 HIGH mlx5: fix possible ptp queue fifo use-after-free

Showing top 20 of 121 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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