CVE-2022-1263: Null Pointer Dereference
First published: Wed Apr 06 2022(Updated: )
A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <5.18 | |
| Linux Linux kernel | =5.18-rc1 | |
| Linux Linux kernel | =5.18-rc2 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux | =9.0 | |
| redhat/kernel | <5.18 | 5.18 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.6-1 6.12.9-1 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2022-1263
- https://bugzilla.redhat.com/show_bug.cgi?id=2072698
- https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4
- https://www.openwall.com/lists/oss-security/2022/04/07/1
- https://launchpad.net/bugs/cve/CVE-2022-1263
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2096875
- https://access.redhat.com/errata/RHSA-2022:7683
- https://access.redhat.com/errata/RHSA-2022:7444
- https://access.redhat.com/errata/RHSA-2022:8267
- https://access.redhat.com/errata/RHSA-2022:7933
- https://www.spinics.net/lists/kvm/msg273052.html
- https://security-tracker.debian.org/tracker/CVE-2022-1263
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-1263
- https://nvd.nist.gov/vuln/detail/CVE-2022-1263
- https://ubuntu.com/security/CVE-2022-1263
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