CVE-2021-43056
published 2021-10-28CVE-2021-43056: An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.34%
26.9th percentile
An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.14.16-1 (bookworm) | linux 5.14.16-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| linux | linux_kernel | >= 0 < 5.10.84-1 | 5.10.84-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 0 < 5.4.0-92.103 | 5.4.0-92.103 |
| linux | linux_kernel | >= 0 < 5.4.0-94.106 | 5.4.0-94.106 |
| linux | linux_kernel | >= 5.2 < 5.4.15 | 5.4.15 |
| paloalto | pan-os | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Palo Alto
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS
vendor_paloalto·2024-02-14·CVSS 9.8
CVE-2017-18342 [CRITICAL] PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS
PAN-SA-2024-0001 Informational Bulletin: Impact of OSS CVEs in PAN-OS
The Palo Alto Networks Product Security Assurance team has evaluated the following open source software (OSS) CVEs as they relate to PAN-OS software. While PAN-OS software may include the
CVEs: CVE-2017-18342, CVE-2017-8923, CVE-2017-9120, CVE-2019-1551, CVE-2019-16865, CVE-2019-16905, CVE-2019-19523, CVE-2019-19528, CVE-2019-19911, CVE-2020-0404, CVE-2020-0431, CVE-2020-0466, CVE-2020-10379, CVE-2020-11538, CVE-2020-11608, CVE-2020-12114, CVE-2020-12321, CVE-2020-12362, CVE-2020-12363, CVE-2020-12364, CVE-2020-13757, CVE-2020-14314, CVE-2020-14351, CVE-2020-15778, CVE-2020-1967, CVE-2020-24394, CVE-2020-24504, CVE-2020-25211, CVE-2020-25212, CVE-2020-25284, CVE-2020-25285, CVE-2020-25717, CVE-2020-26541, CVE-2020-2715
Ubuntu
Linux kernel regression
vendor_ubuntu·2022-01-12·CVSS 6.5
[MEDIUM] Linux kernel regression
Title: Linux kernel regression
Summary: USN-5210-1 introduced a regression in the Linux kernel.
USN-5210-1 fixed vulnerabilities in the Linux kernel. Unfortunately,
that update introduced a regression that caused failures to boot in
environments with AMD Secure Encrypted Virtualization (SEV) enabled.
This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Nadav Amit discovered that the hugetlb implementation in the Linux kernel
did not perform TLB flushes under certain conditions. A local attacker
could use this to leak or alter data from other processes that use huge
pages. (CVE-2021-4002)
It was discovered that the Linux kernel did not properly enforce certain
types of entries in the Secure Boot Forbidden Signature Database (aka dbx)
protection
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2022-01-11·CVSS 4.7
CVE-2021-41864 [MEDIUM] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Nadav Amit discovered that the hugetlb implementation in the Linux kernel
did not perform TLB flushes under certain conditions. A local attacker
could use this to leak or alter data from other processes that use huge
pages. (CVE-2021-4002)
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)
It was discovered that a race condition existed in the overlay file system
implementation in the Linux kernel. A local attacker could use this to
cause a denial of serv
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2022-01-06·CVSS 4.7
CVE-2021-43389 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Nadav Amit discovered that the hugetlb implementation in the Linux kernel
did not perform TLB flushes under certain conditions. A local attacker
could use this to leak or alter data from other processes that use huge
pages. (CVE-2021-4002)
It was discovered that a race condition existed in the overlay file system
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash). (CVE-2021-20321)
It was discovered that the NFC subsystem in the Linux kernel contained a
use-after-free vulnerability in its NFC Controller Interface (NCI)
implementation. A local attacker could possibly use this to cause a denial
of service (system crash) or execut
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2022-01-06·CVSS 6.5
CVE-2021-4002 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Nadav Amit discovered that the hugetlb implementation in the Linux kernel
did not perform TLB flushes under certain conditions. A local attacker
could use this to leak or alter data from other processes that use huge
pages. (CVE-2021-4002)
It was discovered that the Linux kernel did not properly enforce certain
types of entries in the Secure Boot Forbidden Signature Database (aka dbx)
protection mechanism. An attacker could use this to bypass UEFI Secure Boot
restrictions. (CVE-2020-26541)
It was discovered that a race condition existed in the overlay file system
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash). (CVE-2021-20
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2021-11-30·CVSS 7.8
CVE-2021-3772 [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 NFC subsystem in the Linux kernel contained a
use-after-free vulnerability in its NFC Controller Interface (NCI)
implementation. A local attacker could possibly use this to cause a denial
of service (system crash) or execute arbitrary code. (CVE-2021-3760)
It was discovered that the SCTP protocol implementation in the Linux kernel
did not properly verify VTAGs in some situations. A remote attacker could
possibly use this to cause a denial of service (connection disassociation).
(CVE-2021-3772)
It was discovered that the AMD Radeon GPU driver in the Linux kernel did
not properly validate writes in the debugfs file system. A privileged
attacker could use t
Ubuntu
Linux kernel (OEM 5.10) vulnerabilities
vendor_ubuntu·2021-11-11·CVSS 3.3
CVE-2021-43056 [LOW] Linux kernel (OEM 5.10) vulnerabilities
Title: Linux kernel (OEM 5.10) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ilja Van Sprundel discovered that the SCTP implementation in the Linux
kernel did not properly perform size validations on incoming packets in
some situations. An attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2021-3655)
It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in
the Linux kernel did not properly deallocate memory in some error
conditions. A local attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2021-3744, CVE-2021-3764)
It was discovered that the NFC subsystem in the Linux kernel contained a
use-after-free vulnerability in its NFC Controller Interface (NCI)
implementation. A l
Red Hat
kernel: ppc: kvm: allows a malicious KVM guest to crash the host
vendor_redhat·2021-10-25·CVSS 5.5
CVE-2021-43056 [MEDIUM] CWE-252 kernel: ppc: kvm: allows a malicious KVM guest to crash the host
kernel: ppc: kvm: allows a malicious KVM guest to crash the host
An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values.
A denial of service problem was found in the Linux kernel's Kernel-based Virtual Machine (KVM) specific to PowerPC. In this flaw, a user with local access can confuse the host offline code, causing the guest to crash.
Mitigation: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stabil
Debian
CVE-2021-43056: linux - An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allow...
vendor_debian·2021·CVSS 5.5
CVE-2021-43056 [MEDIUM] CVE-2021-43056: linux - An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allow...
An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values.
Scope: local
bookworm: resolved (fixed in 5.14.16-1)
bullseye: resolved (fixed in 5.10.84-1)
forky: resolved (fixed in 5.14.16-1)
sid: resolved (fixed in 5.14.16-1)
trixie: resolved (fixed in 5.14.16-1)
GHSA
GHSA-jwg8-85wj-r8fp: An issue was discovered in the Linux kernel for powerpc before 5
ghsa_unreviewed·2022-05-24
CVE-2021-43056 [MEDIUM] GHSA-jwg8-85wj-r8fp: An issue was discovered in the Linux kernel for powerpc before 5
An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values.
OSV
linux, linux-gcp, linux-gcp-5.4, linux-hwe-5.4 regression
osv·2022-01-12·CVSS 6.5
[MEDIUM] linux, linux-gcp, linux-gcp-5.4, linux-hwe-5.4 regression
linux, linux-gcp, linux-gcp-5.4, linux-hwe-5.4 regression
USN-5210-1 fixed vulnerabilities in the Linux kernel. Unfortunately,
that update introduced a regression that caused failures to boot in
environments with AMD Secure Encrypted Virtualization (SEV) enabled.
This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Nadav Amit discovered that the hugetlb implementation in the Linux kernel
did not perform TLB flushes under certain conditions. A local attacker
could use this to leak or alter data from other processes that use huge
pages. (CVE-2021-4002)
It was discovered that the Linux kernel did not properly enforce certain
types of entries in the Secure Boot Forbidden Signature Database (aka dbx)
protection mechanism. An attacker could use this
OSV
linux-oem-5.13 vulnerabilities
osv·2022-01-11·CVSS 4.7
CVE-2021-4002 [MEDIUM] linux-oem-5.13 vulnerabilities
linux-oem-5.13 vulnerabilities
Nadav Amit discovered that the hugetlb implementation in the Linux kernel
did not perform TLB flushes under certain conditions. A local attacker
could use this to leak or alter data from other processes that use huge
pages. (CVE-2021-4002)
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)
It was discovered that a race condition existed in the overlay file system
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash). (CVE-2021-20321)
It was discovered that the NFC subsyste
OSV
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-kvm, l
osv·2022-01-06·CVSS 6.5
[MEDIUM] linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-kvm, l
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities
Nadav Amit discovered that the hugetlb implementation in the Linux kernel
did not perform TLB flushes under certain conditions. A local attacker
could use this to leak or alter data from other processes that use huge
pages. (CVE-2021-4002)
It was discovered that the Linux kernel did not properly enforce certain
types of entries in the Secure Boot Forbidden Signature Database (aka dbx)
protection mechanism. An attacker could use this to bypass UEFI Secure Boot
restrictions. (CVE-2020-26541)
It was discovered that a r
OSV
linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities
osv·2022-01-06·CVSS 4.7
CVE-2021-4002 [MEDIUM] linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities
linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities
Nadav Amit discovered that the hugetlb implementation in the Linux kernel
did not perform TLB flushes under certain conditions. A local attacker
could use this to leak or alter data from other processes that use huge
pages. (CVE-2021-4002)
It was discovered that a race condition existed in the overlay file system
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash). (CVE-2021-20321)
It was discovered that the NFC subsystem in the Linux kernel contained a
use-after-free vulnerability in its NFC Controller Interface (NCI)
implementation. A local attacker
OSV
linux-oem-5.14 vulnerabilities
osv·2021-11-30·CVSS 7.8
CVE-2021-3760 [HIGH] linux-oem-5.14 vulnerabilities
linux-oem-5.14 vulnerabilities
It was discovered that the NFC subsystem in the Linux kernel contained a
use-after-free vulnerability in its NFC Controller Interface (NCI)
implementation. A local attacker could possibly use this to cause a denial
of service (system crash) or execute arbitrary code. (CVE-2021-3760)
It was discovered that the SCTP protocol implementation in the Linux kernel
did not properly verify VTAGs in some situations. A remote attacker could
possibly use this to cause a denial of service (connection disassociation).
(CVE-2021-3772)
It was discovered that the AMD Radeon GPU driver in the Linux kernel did
not properly validate writes in the debugfs file system. A privileged
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary
OSV
linux-oem-5.10 vulnerabilities
osv·2021-11-11·CVSS 3.3
CVE-2021-3655 [LOW] linux-oem-5.10 vulnerabilities
linux-oem-5.10 vulnerabilities
Ilja Van Sprundel discovered that the SCTP implementation in the Linux
kernel did not properly perform size validations on incoming packets in
some situations. An attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2021-3655)
It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in
the Linux kernel did not properly deallocate memory in some error
conditions. A local attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2021-3744, CVE-2021-3764)
It was discovered that the NFC subsystem in the Linux kernel contained a
use-after-free vulnerability in its NFC Controller Interface (NCI)
implementation. A local attacker could possibly use this to cause a denial
of service (system crash)
OSV
CVE-2021-43056: An issue was discovered in the Linux kernel for powerpc before 5
osv·2021-10-28·CVSS 5.5
CVE-2021-43056 [MEDIUM] CVE-2021-43056: An issue was discovered in the Linux kernel for powerpc before 5
An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://www.openwall.com/lists/oss-security/2021/10/28/1https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15https://git.kernel.org/linus/cdeb5d7d890e14f3b70e8087e745c4a6a7d9f337https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AA7EAPPKWG4LMTQQLNNSKATY6ST2KQFE/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBM4FP3IT3JZ2O7EBS7TEOG657N4ZGRE/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRAIS3PG4EV5WFLYESR6FXWM4BJJGWVA/https://lore.kernel.org/linuxppc-dev/87pmrtbbdt.fsf%40mpe.ellerman.id.au/T/#uhttp://www.openwall.com/lists/oss-security/2021/10/28/1https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15https://git.kernel.org/linus/cdeb5d7d890e14f3b70e8087e745c4a6a7d9f337https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AA7EAPPKWG4LMTQQLNNSKATY6ST2KQFE/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBM4FP3IT3JZ2O7EBS7TEOG657N4ZGRE/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRAIS3PG4EV5WFLYESR6FXWM4BJJGWVA/https://lore.kernel.org/linuxppc-dev/87pmrtbbdt.fsf%40mpe.ellerman.id.au/T/#u
2021-10-28
Published