An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat.
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Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2021-33977 | An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat. |
Ubuntu USN |
USN-5217-1 | Linux kernel (OEM) vulnerabilities |
Ubuntu USN |
USN-5265-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5362-1 | Linux kernel (Intel IOTG) vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
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Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-03T17:16:03.753Z
Reserved: 2021-12-10T00:00:00
Link: CVE-2021-4090
No data.
Status : Modified
Published: 2022-02-18T18:15:10.207
Modified: 2024-11-21T06:36:52.880
Link: CVE-2021-4090
OpenCVE Enrichment
No data.
Weaknesses
EUVD
Ubuntu USN