The Linux kernel NFSD implementation prior to versions 5.19.17 and 6.0.2 are vulnerable to buffer overflow. NFSD tracks the number of pages held by each NFSD thread by combining the receive and send buffers of a remote procedure call (RPC) into a single array of pages. A client can force the send buffer to shrink by sending an RPC message over TCP with garbage data added at the end of the message. The RPC message with garbage data is still correctly formed according to the specification and is passed forward to handlers. Vulnerable code in NFSD is not expecting the oversized request and writes beyond the allocated buffer space. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f90497a16e434c2211c66e3de8e77b17868382b8 | Mailing List Patch Vendor Advisory |
https://security.netapp.com/advisory/ntap-20221215-0006/ | Third Party Advisory |
http://packetstormsecurity.com/files/171289/Kernel-Live-Patch-Security-Notice-LNS-0092-1.html |
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Information
Published : 2022-11-04 12:15
Updated : 2023-03-08 10:15
NVD link : CVE-2022-43945
Mitre link : CVE-2022-43945
JSON object : View
CWE
CWE-770
Allocation of Resources Without Limits or Throttling
Products Affected
netapp
- h410c_firmware
- h300s
- h500s
- h500s_firmware
- active_iq_unified_manager
- h700s
- h410c
- h410s_firmware
- h410s
- h700s_firmware
- h300s_firmware
linux
- linux_kernel