kernel: missing check in ioctl allows kernel memory read/write
Published Mar 8, 2022
7.8
HIGHCVSS 3.1
EPSS 0.34%
Description
A vulnerability was found in kvm_s390_guest_sida_op in the arch/s390/kvm/kvm-s390.c function in KVM for s390 in the Linux kernel. This flaw allows a local attacker with a normal user privilege to obtain unauthorized memory write access. This flaw affects Linux kernel versions prior to 5.17-rc4.
Affected products
- Vendor n/a Product Kernel Defaultn/a
- Version Linux kernel versions prior to 5.17-rc4StatusaffectedConstraints-
- 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
- < 5.17
- 5.17
- 5.17
- 5.17
Configuration 2
- 34
- 35
Configuration 3
- 11.0
Configuration 4
- 4.0
Running on/with
- 8.0
Configuration 5
- 8.0
- 8.4
- 8.0
- 8.4
- 8.0
- 8.4
- 8.4
- 8.4
- 8.4
- 8.4
Configuration 6
- n/a
Running on/with
- 8.0
- 8.4
- 8.0
- 8.4
Configuration 7
- n/a
Configuration 8
- n/a
Configuration 9
- n/a
Configuration 10
- n/a
Configuration 11
- n/a
Configuration 12
- n/a
Configuration 13
- n/a
Configuration 14
- n/a
No data.
Red Hat Enterprise Linux 8
kernel-0:4.18.0-348.20.1.el8_5
Fixed · RHSA-2022:0825
Red Hat Enterprise Linux 8.4 Extended Update Support
kernel-0:4.18.0-305.40.1.el8_4
Fixed · RHSA-2022:0777
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
Red Hat Enterprise Linux 8
kernel-rt
Affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-348.20.1.el8_5 | Fixed | RHSA-2022:0825 |
| Red Hat Enterprise Linux 8.4 Extended Update Support | kernel-0:4.18.0-305.40.1.el8_4 | Fixed | RHSA-2022:0777 |
| 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 |
| Red Hat Enterprise Linux 8 | kernel-rt | Affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
As the kvm.ko kernel module will be auto-loaded when required, its use can be disabled by preventing the module from loading with the following instructions: # echo "install kvm /bin/true" >> /etc/modprobe.d/disable-kvm.conf If the system requires this module to work correctly, this mitigation may not be suitable. If you need further assistance, see the KCS article https://access.redhat.com/solutions/41278 or contact Red Hat Global Support Services.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.34% (0.00335) | 24.48th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.33% (0.00327) | 24.22th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.02% (0.00021) | 3.16th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Mar 31, 2022 | 0.95% (0.00950) | 14.68th | v2 (v2022.01.01) |
| Mar 9, 2022 | 0.89% (0.00890) | 12.90th | v2 (v2022.01.01) |
References (7)
- https://access.redhat.com/security/cve/CVE-2022-0516 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2050237 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=09a93c1df3eafa43bcdfd7bf837c574911f12f55 x_refsource_MISCMailing ListPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2022-0516
- https://security.netapp.com/advisory/ntap-20220331-0009/ x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2022-0516
- https://www.debian.org/security/2022/dsa-5092 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2022-0516 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2050237 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=09a93c1df3eafa43bcdfd7bf837c574911f12f55 | x_refsource_MISCMailing ListPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2022-0516 | ||
| https://security.netapp.com/advisory/ntap-20220331-0009/ | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2022-0516 | ||
| https://www.debian.org/security/2022/dsa-5092 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.