kernel: NULL pointer dereference in x86_emulate_insn may lead to DoS
Published Jun 30, 2022
5.5
MEDIUMCVSS 3.1
EPSS 0.30%
Description
A NULL pointer dereference flaw was found in the Linux kernel’s KVM module, which can lead to a denial of service in the x86_emulate_insn in arch/x86/kvm/emulate.c. This flaw occurs while executing an illegal instruction in guest in the Intel CPU.
Affected products
- Vendor n/a Product Kernel Defaultn/a
- Version kernel 5.19 rc1StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Kernel | n/a |
|
Configuration 1
- < 5.19
Configuration 2
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 8
kernel-0:4.18.0-425.3.1.el8
Fixed · RHSA-2022:7683
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-425.3.1.rt7.213.el8
Fixed · RHSA-2022:7444
Red Hat Enterprise Linux 8.6 Extended Update Support
kernel-0:4.18.0-372.100.1.el8_6
Fixed · RHSA-2024:1877
Red Hat Enterprise Linux 9
kernel-0:5.14.0-162.6.1.el9_1
Fixed · RHSA-2022:8267
Red Hat Enterprise Linux 9
kernel-0:5.14.0-162.6.1.el9_1
Fixed · RHSA-2022:8267
Red Hat Enterprise Linux 9
kernel-rt-0:5.14.0-162.6.1.rt21.168.el9_1
Fixed · RHSA-2022:7933
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
kernel-0:4.18.0-372.100.1.el8_6
Fixed · RHSA-2024:1877
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-425.3.1.el8 | Fixed | RHSA-2022:7683 |
| Red Hat Enterprise Linux 8 | kernel-rt-0:4.18.0-425.3.1.rt7.213.el8 | Fixed | RHSA-2022:7444 |
| Red Hat Enterprise Linux 8.6 Extended Update Support | kernel-0:4.18.0-372.100.1.el8_6 | Fixed | RHSA-2024:1877 |
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-162.6.1.el9_1 | Fixed | RHSA-2022:8267 |
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-162.6.1.el9_1 | Fixed | RHSA-2022:8267 |
| Red Hat Enterprise Linux 9 | kernel-rt-0:5.14.0-162.6.1.rt21.168.el9_1 | Fixed | RHSA-2022:7933 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | kernel-0:4.18.0-372.100.1.el8_6 | Fixed | RHSA-2024:1877 |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
This flaw can be mitigated by preventing the affected KVM module from loading during the boot time, and ensuring the module is added to the blacklist file. ~~~ Refer: How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278 ~~~
References (6)
- https://access.redhat.com/security/cve/CVE-2022-1852 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2089815 x_refsource_MISCIssue TrackingThird Party Advisory
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-25125 Advisory
- https://github.com/torvalds/linux/commit/fee060cd52d69c114b62d1a2948ea9648b5131f9 x_refsource_MISCPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2022-1852
- https://www.cve.org/CVERecord?id=CVE-2022-1852
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2022-1852 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2089815 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-25125 | Advisory | |
| https://github.com/torvalds/linux/commit/fee060cd52d69c114b62d1a2948ea9648b5131f9 | x_refsource_MISCPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2022-1852 | ||
| https://www.cve.org/CVERecord?id=CVE-2022-1852 |
Change history (0)
No recorded changes yet.