CVE-2021-4090
First published: Fri Nov 19 2021(Updated: )
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, and write leading to a system integrity and confidentiality threat. Upstream discussion: <a href="https://lore.kernel.org/linux-nfs/97860.1636837122@crash.local/">https://lore.kernel.org/linux-nfs/97860.1636837122@crash.local/</a> <a href="https://lore.kernel.org/linux-nfs/163692036074.16710.5678362976688977923.stgit@klimt.1015granger.net/">https://lore.kernel.org/linux-nfs/163692036074.16710.5678362976688977923.stgit@klimt.1015granger.net/</a>
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.16 | 5.16 |
| Linux Linux kernel | <5.16 | |
| Linux Linux kernel | =5.16 | |
| Linux Linux kernel | =5.16-rc1 | |
| All of | ||
| Netapp H300s Firmware | ||
| Netapp H300s | ||
| All of | ||
| Netapp H500s Firmware | ||
| Netapp H500s | ||
| All of | ||
| Netapp H700s Firmware | ||
| Netapp H700s | ||
| All of | ||
| Netapp H300e Firmware | ||
| Netapp H300e | ||
| All of | ||
| Netapp H500e Firmware | ||
| Netapp H500e | ||
| All of | ||
| Netapp H700e Firmware | ||
| Netapp H700e | ||
| All of | ||
| Netapp H410s Firmware | ||
| Netapp H410s | ||
| All of | ||
| Netapp H410c Firmware | ||
| Netapp H410c | ||
| Netapp H300s Firmware | ||
| Netapp H300s | ||
| Netapp H500s Firmware | ||
| Netapp H500s | ||
| Netapp H700s Firmware | ||
| Netapp H700s | ||
| Netapp H300e Firmware | ||
| Netapp H300e | ||
| Netapp H500e Firmware | ||
| Netapp H500e | ||
| Netapp H700e Firmware | ||
| Netapp H700e | ||
| Netapp H410s Firmware | ||
| Netapp H410s | ||
| Netapp H410c Firmware | ||
| Netapp H410c | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.106-3 6.1.112-1 6.11.4-1 6.11.5-1 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2025101
- https://lore.kernel.org/linux-nfs/163692036074.16710.5678362976688977923.stgit@klimt.1015granger.net/
- https://security.netapp.com/advisory/ntap-20220318-0010/
- https://launchpad.net/bugs/cve/CVE-2021-4090
- https://lore.kernel.org/linux-nfs/97860.1636837122@crash.local/
- https://access.redhat.com/security/cve/cve-2021-4090
- https://lore.kernel.org/linux-nfs/163692036074.16710.5678362976688977923.stgit%40klimt.1015granger.net/
- https://git.kernel.org/linus/c0019b7db1d7ac62c711cda6b357a659d46428fe
- https://security-tracker.debian.org/tracker/CVE-2021-4090
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4090
- https://nvd.nist.gov/vuln/detail/CVE-2021-4090
- https://ubuntu.com/security/CVE-2021-4090
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/remedy
- agent/weakness
- agent/severity
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-4090
- agent/software-canonical-lookup
- agent/description
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup-request
- collector/nvd-index
- agent/references
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/tags
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- package-manager/redhat
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/5.16
- version/linux linux kernel/5.16-rc1
- vendor/netapp
- canonical/netapp h300s firmware
- canonical/netapp h300s
- canonical/netapp h500s firmware
- canonical/netapp h500s
- canonical/netapp h700s firmware
- canonical/netapp h700s
- canonical/netapp h300e firmware
- canonical/netapp h300e
- canonical/netapp h500e firmware
- canonical/netapp h500e
- canonical/netapp h700e firmware
- canonical/netapp h700e
- canonical/netapp h410s firmware
- canonical/netapp h410s
- canonical/netapp h410c firmware
- canonical/netapp h410c
- package-manager/debian