CVEvulnerability
CVE-2021-4090
7.1 HIGH
Official page ↗
- Status
- Modified
- Published
- 2022-02-18
- Last modified
- 2026-10-14
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- CVSS 2.0 ([email protected])
- 6.6 MEDIUM — AV:L/AC:L/Au:N/C:C/I:C/A:N
- Weaknesses
- CWE-787
Description
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.
Affected configurations
• linux linux kernel (< 5.16)
• linux linux kernel 5.16
• netapp h300s firmware
• netapp h500s firmware
• netapp h700s firmware
• netapp h300e firmware
• netapp h500e firmware
• netapp h700e firmware
• netapp h410s firmware
• netapp h410c firmware
Related
Weakness · CWE (1)
- CWE-787 Out-of-bounds Write weakness
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2025101 Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c0019b7db1d7ac62c711cda6b357a659d46428fe git.kernel.org
- https://lore.kernel.org/linux-nfs/163692036074.16710.5678362976688977923.stgit%40klimt.1015granger.net/ lore.kernel.org
- https://security.netapp.com/advisory/ntap-20220318-0010/ Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2025101 Issue Tracking, Patch, Third Party Advisory
- https://lore.kernel.org/linux-nfs/163692036074.16710.5678362976688977923.stgit%40klimt.1015granger.net/ lore.kernel.org
- https://security.netapp.com/advisory/ntap-20220318-0010/ Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html cert-portal.siemens.com