CVE-2022-1158: Use After Free
First published: Tue Mar 29 2022(Updated: )
A flaw was found in KVM. When updating a guest's page table entry, vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel, resulting in a denial of service condition.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-425.3.1.rt7.213.el8 | 0:4.18.0-425.3.1.rt7.213.el8 |
| redhat/kernel | <0:4.18.0-425.3.1.el8 | 0:4.18.0-425.3.1.el8 |
| redhat/kernel | <0:4.18.0-193.95.1.el8_2 | 0:4.18.0-193.95.1.el8_2 |
| redhat/kernel-rt | <0:4.18.0-193.95.1.rt13.146.el8_2 | 0:4.18.0-193.95.1.rt13.146.el8_2 |
| redhat/kernel-rt | <0:4.18.0-305.71.1.rt7.143.el8_4 | 0:4.18.0-305.71.1.rt7.143.el8_4 |
| redhat/kernel | <0:4.18.0-305.71.1.el8_4 | 0:4.18.0-305.71.1.el8_4 |
| redhat/kernel | <0:4.18.0-372.36.1.el8_6 | 0:4.18.0-372.36.1.el8_6 |
| redhat/kernel | <0:5.14.0-162.6.1.el9_1 | 0:5.14.0-162.6.1.el9_1 |
| redhat/kernel-rt | <0:5.14.0-162.6.1.rt21.168.el9_1 | 0:5.14.0-162.6.1.rt21.168.el9_1 |
| redhat/kernel | <0:5.14.0-70.36.1.el9_0 | 0:5.14.0-70.36.1.el9_0 |
| redhat/kernel-rt | <0:5.14.0-70.36.1.rt21.108.el9_0 | 0:5.14.0-70.36.1.rt21.108.el9_0 |
| redhat/kernel | <5.18 | 5.18 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 | |
| Linux Kernel | >=5.2<5.4.189 | |
| Linux Kernel | >=5.5<5.10.110 | |
| Linux Kernel | >=5.11<5.15.33 | |
| Linux Kernel | >=5.16<5.16.19 | |
| Linux Kernel | >=5.17<5.17.2 | |
| Fedora | =36 | |
| Red Hat Enterprise Linux | =8.0 | |
| Red Hat Enterprise Linux | =9.0 |
Remedy
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-1158 https://nvd.nist.gov/vuln/detail/CVE-2022-1158 https://www.openwall.com/lists/oss-security/2022/04/08/4
- https://bugzilla.redhat.com/show_bug.cgi?id=2069793
- https://access.redhat.com/errata/RHSA-2022:7444
- https://access.redhat.com/errata/RHSA-2022:7683
- https://access.redhat.com/errata/RHSA-2022:8940
- https://access.redhat.com/errata/RHSA-2022:8941
- https://access.redhat.com/errata/RHSA-2022:8989
- https://access.redhat.com/errata/RHSA-2022:8673
- https://access.redhat.com/errata/RHSA-2022:8685
- https://access.redhat.com/errata/RHSA-2022:8686
- https://access.redhat.com/errata/RHSA-2022:8809
- https://access.redhat.com/errata/RHSA-2022:8831
- https://access.redhat.com/errata/RHSA-2022:8267
- https://access.redhat.com/errata/RHSA-2022:7933
- https://access.redhat.com/errata/RHSA-2022:8973
- https://access.redhat.com/errata/RHSA-2022:8974
- https://access.redhat.com/errata/RHSA-2022:9082
- https://access.redhat.com/security/cve/cve-2022-1158
- https://security.netapp.com/advisory/ntap-20230214-0003/
- https://www.openwall.com/lists/oss-security/2022/04/08/4
- https://launchpad.net/bugs/cve/CVE-2022-1158
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2096819
- https://github.com/torvalds/linux/commit/bd53cb35a3e9adb73a834a36586e9ad80e877767
- https://github.com/torvalds/linux/commit/2a8859f373b0a86f0ece8ec8312607eacf12485d
- https://github.com/torvalds/linux/commit/f122dfe4476890d60b8c679128cd2259ec96a24c
- https://git.kernel.org/linus/2a8859f373b0a86f0ece8ec8312607eacf12485d
- https://security-tracker.debian.org/tracker/CVE-2022-1158
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-1158
- https://nvd.nist.gov/vuln/detail/CVE-2022-1158
- https://ubuntu.com/security/CVE-2022-1158
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2022-1158?
CVE-2022-1158 has been assigned a medium to high severity rating due to the potential for unprivileged local users to perform unauthorized write operations.
How do I fix CVE-2022-1158?
To remediate CVE-2022-1158, update to the appropriate kernel versions listed in the official advisory.
Which software is affected by CVE-2022-1158?
CVE-2022-1158 affects several kernel versions including those from Red Hat and Debian.
Is there a workaround for CVE-2022-1158?
There is no specific workaround detailed for CVE-2022-1158; patching the affected software is recommended.
What are the consequences of exploiting CVE-2022-1158?
Exploiting CVE-2022-1158 could allow unprivileged users to write outside their allocated memory space, potentially leading to data corruption or system instability.
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