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CVE-2022-50859— cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message

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VALIDATE_NEGOTIATE_INFO消息长度错误，可能导致信息泄露。

AI Predicted 5.3 Difficulty: Hard EPSS 0.24% · P15

Possible ATT&CK Techniques 1 AI

T1030 · Data Transfer Size Limits

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux d5c7076b772ad7dcdb92303397b36aee8fa0d25d< d0050ec3ebbcb3451df9a65b8460be9b9e02e80c affected
d5c7076b772ad7dcdb92303397b36aee8fa0d25d< 9312e04b6c6bc46354ecd0cc82052a2b3df0b529 affected
d5c7076b772ad7dcdb92303397b36aee8fa0d25d< 60480291c1fcafad8425d93f771b5bcc2bd398b4 affected
d5c7076b772ad7dcdb92303397b36aee8fa0d25d< 943eb0ede74ecd609fdfd3f0b83e0d237613e526 affected
d5c7076b772ad7dcdb92303397b36aee8fa0d25d< fada9b8c95c77bb46b89e18117405bc90fce9f74 affected
d5c7076b772ad7dcdb92303397b36aee8fa0d25d< e98ecc6e94f4e6d21c06660b0f336df02836694f affected
5.0 affected
< 5.0 unaffected
… +6 more rows
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I. Basic Information for CVE-2022-50859

Vulnerability Information
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Vulnerability Title
cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message Commit d5c7076b772a ("smb3: add smb3.1.1 to default dialect list") extend the dialects from 3 to 4, but forget to decrease the extended length when specific the dialect, then the message length is larger than expected. This maybe leak some info through network because not initialize the message body. After apply this patch, the VALIDATE_NEGOTIATE_INFO message length is reduced from 28 bytes to 26 bytes.
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VALIDATE_NEGOTIATE_INFO消息长度错误，可能导致信息泄露。
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 d5c7076b772ad7dcdb92303397b36aee8fa0d25d ~ d0050ec3ebbcb3451df9a65b8460be9b9e02e80c -
Linux Linux 5.0 -

II. Public POCs for CVE-2022-50859

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III. Intelligence Information for CVE-2022-50859

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Other References for CVE-2022-50859 (6)

Same Patch Batch · Linux · 2025-12-30 · 244 CVEs total

CVE-2023-54184 9.8 CRITICAL scsi: target: iscsit: Free cmds before session free
CVE-2023-54223 9.8 CRITICAL net/mlx5e: xsk: Fix invalid buffer access for legacy rq
CVE-2023-54237 9.8 CRITICAL net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()
CVE-2023-54257 9.8 CRITICAL net: macb: fix a memory corruption in extended buffer descriptor mode
CVE-2023-54258 9.8 CRITICAL cifs: fix potential oops in cifs_oplock_break
CVE-2023-54269 9.8 CRITICAL SUNRPC: double free xprt_ctxt while still in use
CVE-2023-54280 9.8 CRITICAL cifs: fix potential race when tree connecting ipc
CVE-2023-54292 9.8 CRITICAL RDMA/irdma: Fix data race on CQP request done
CVE-2023-54203 9.1 CRITICAL ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr
CVE-2022-50880 8.8 HIGH wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
CVE-2023-54262 8.8 HIGH net/mlx5e: Don't clone flow post action attributes second time
CVE-2023-54214 8.8 HIGH Bluetooth: L2CAP: Fix potential user-after-free
CVE-2023-54162 8.8 HIGH ksmbd: fix possible memory leak in smb2_lock()
CVE-2023-54318 8.8 HIGH net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add
CVE-2023-54250 8.2 HIGH ksmbd: avoid out of bounds access in decode_preauth_ctxt()
CVE-2023-54164 8.0 HIGH Bluetooth: ISO: fix iso_conn related locking and validity issues
CVE-2023-54206 7.8 HIGH net/sched: flower: fix filter idr initialization
CVE-2023-54202 7.8 HIGH drm/i915: fix race condition UAF in i915_perf_add_config_ioctl
CVE-2023-54210 7.8 HIGH Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()
CVE-2023-54243 7.8 HIGH netfilter: ebtables: fix table blob use-after-free

Showing top 20 of 244 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50859

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