CVE-2021-4090
published 2022-02-18CVE-2021-4090: 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…
PriorityP336high7.1CVSS 3.1
AVLACLPRLUINSUCHIHAN
EPSS
0.34%
26.5th percentile
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
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.15.5-1 (bookworm) | linux 5.15.5-1 (bookworm) |
| linux | linux_kernel | < 5.16 | 5.16 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.15.5-1 | 5.15.5-1 |
| linux | linux_kernel | >= 0 < 5.15.5-1 | 5.15.5-1 |
| linux | linux_kernel | >= 0 < 5.15.5-1 | 5.15.5-1 |
| msrc | cbl2_kernel_5.15.26.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cm1_kernel_5.10.102.1-1_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.17.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
nvdv2.06.6MEDIUMAV:L/AC:L/Au:N/C:C/I:C/A:N
osv7.1HIGH
vendor_debian7.1HIGH
vendor_msrc7.1HIGH
vendor_redhat7.1HIGH
vendor_ubuntu7.1HIGH
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Ubuntu
Linux kernel (Intel IOTG) vulnerabilities
vendor_ubuntu·2022-04-01·CVSS 6.5
CVE-2022-0742 [MEDIUM] Linux kernel (Intel IOTG) vulnerabilities
Title: Linux kernel (Intel IOTG) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Nick Gregory discovered that the Linux kernel incorrectly handled network
offload functionality. A local attacker could use this to cause a denial of
service or possibly execute arbitrary code. (CVE-2022-25636)
Enrico Barberis, Pietro Frigo, Marius Muench, Herbert Bos, and Cristiano
Giuffrida discovered that hardware mitigations added by ARM to their
processors to address Spectre-BTI were insufficient. A local attacker could
potentially use this to expose sensitive information. (CVE-2022-23960)
It was discovered that the BPF verifier in the Linux kernel did not
properly restrict pointer types in certain situations. A local attacker
could use this to cause a denial of servic
Microsoft
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
vendor_msrc·2022-02-08·CVSS 7.1
CVE-2021-4090 [HIGH] CWE-787 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
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2022-02-03·CVSS 4.7
CVE-2021-4001 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Jeremy Cline discovered a use-after-free in the nouveau graphics driver of
the Linux kernel during device removal. A privileged or physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2020-27820)
It was discovered that the Bluetooth subsystem in the Linux kernel
contained a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2021-3640)
Likang Luo discovered that a race condition existed in the Bluetooth
subsystem of the Linux kernel, leading to a use-after-free vulnerability. A
local attacker could use this to cause a denial of service (system crash)
o
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2022-01-11·CVSS 7.1
CVE-2021-4090 [HIGH] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the NFS server implementation in the Linux kernel
contained an out-of-bounds write vulnerability. A local attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2021-4090)
It was discovered that the eBPF implementation in the Linux kernel did
not properly validate the memory size of certain ring buffer operation
arguments. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2021-4204)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change t
Red Hat
kernel: Overflow of bmval[bmlen-1] in nfsd4_decode_bitmap function
vendor_redhat·2021-11-13·CVSS 7.1
CVE-2021-4090 [HIGH] CWE-787 kernel: Overflow of bmval[bmlen-1] in nfsd4_decode_bitmap function
kernel: Overflow of bmval[bmlen-1] in nfsd4_decode_bitmap function
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.
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.
Statement: The affected code was not introduced into any
Debian
CVE-2021-4090: linux - An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kern...
vendor_debian·2021·CVSS 7.1
CVE-2021-4090 [HIGH] CVE-2021-4090: linux - An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kern...
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.
Scope: local
bookworm: resolved (fixed in 5.15.5-1)
bullseye: resolved
forky: resolved (fixed in 5.15.5-1)
sid: resolved (fixed in 5.15.5-1)
trixie: resolved (fixed in 5.15.5-1)
OSV
linux-intel-5.13 vulnerabilities
osv·2022-04-01·CVSS 6.5
CVE-2022-25636 [MEDIUM] linux-intel-5.13 vulnerabilities
linux-intel-5.13 vulnerabilities
Nick Gregory discovered that the Linux kernel incorrectly handled network
offload functionality. A local attacker could use this to cause a denial of
service or possibly execute arbitrary code. (CVE-2022-25636)
Enrico Barberis, Pietro Frigo, Marius Muench, Herbert Bos, and Cristiano
Giuffrida discovered that hardware mitigations added by ARM to their
processors to address Spectre-BTI were insufficient. A local attacker could
potentially use this to expose sensitive information. (CVE-2022-23960)
It was discovered that the BPF verifier in the Linux kernel did not
properly restrict pointer types in certain situations. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2022-23222)
Max Kellerm
GHSA
GHSA-rwxr-f4qj-9x36: An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel
ghsa_unreviewed·2022-02-19
CVE-2021-4090 [HIGH] CWE-787 GHSA-rwxr-f4qj-9x36: An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel
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.
OSV
CVE-2021-4090: An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel
osv·2022-02-18·CVSS 7.1
CVE-2021-4090 [HIGH] CVE-2021-4090: An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel
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.
OSV
linux, linux-aws, linux-aws-5.11, linux-aws-5.13, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.13, linux-kvm, linux-oem-5.13, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities
osv·2022-02-03·CVSS 4.7
CVE-2020-27820 [MEDIUM] linux, linux-aws, linux-aws-5.11, linux-aws-5.13, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.13, linux-kvm, linux-oem-5.13, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities
linux, linux-aws, linux-aws-5.11, linux-aws-5.13, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.13, linux-kvm, linux-oem-5.13, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities
Jeremy Cline discovered a use-after-free in the nouveau graphics driver of
the Linux kernel during device removal. A privileged or physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2020-27820)
It was discovered that the Bluetooth subsystem in the Linux kernel
contained a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2021-3640)
Likang Luo discovered that a race condition existed in the Bluetooth
subsystem of the Linux kernel, leading to a use-after-
OSV
linux-oem-5.14 vulnerabilities
osv·2022-01-11·CVSS 7.1
CVE-2021-4090 [HIGH] linux-oem-5.14 vulnerabilities
linux-oem-5.14 vulnerabilities
It was discovered that the NFS server implementation in the Linux kernel
contained an out-of-bounds write vulnerability. A local attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2021-4090)
It was discovered that the eBPF implementation in the Linux kernel did
not properly validate the memory size of certain ring buffer operation
arguments. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2021-4204)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.redhat.com/show_bug.cgi?id=2025101https://lore.kernel.org/linux-nfs/163692036074.16710.5678362976688977923.stgit%40klimt.1015granger.net/https://security.netapp.com/advisory/ntap-20220318-0010/https://bugzilla.redhat.com/show_bug.cgi?id=2025101https://lore.kernel.org/linux-nfs/163692036074.16710.5678362976688977923.stgit%40klimt.1015granger.net/https://security.netapp.com/advisory/ntap-20220318-0010/https://cert-portal.siemens.com/productcert/html/ssa-265688.html
2022-02-18
Published