CVE-2020-15469: Null Pointer Dereference
First published: Thu Jul 02 2020(Updated: )
In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU qemu | <=5.0.1 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| debian/qemu | <=1:5.2+dfsg-11+deb11u3<=1:5.2+dfsg-11+deb11u2 | 1:7.2+dfsg-7+deb12u7 1:9.1.1+ds-2 1:9.1.1+ds-4 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2020/07/02/1
- https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
- https://lists.gnu.org/archive/html/qemu-devel/2020-06/msg09961.html
- https://launchpad.net/bugs/cve/CVE-2020-15469
- https://www.openwall.com/lists/oss-security/2020/07/02/1
- https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg00674.html
- https://gitlab.com/qemu-project/qemu/-/commit/520f26fc6d17b71a43eaf620e834b3bdf316f3d3
- https://gitlab.com/qemu-project/qemu/-/commit/4f2a5202a05fc1612954804a2482f07bff105ea2
- https://gitlab.com/qemu-project/qemu/-/commit/24202d2b561c3b4c48bd28383c8c34b4ac66c2bf
- https://gitlab.com/qemu-project/qemu/-/commit/f867cebaedbc9c43189f102e4cdfdff05e88df7f
- https://gitlab.com/qemu-project/qemu/-/commit/b5bf601f364e1a14ca4c3276f88dfec024acf613
- https://gitlab.com/qemu-project/qemu/-/commit/921604e175b8ec06c39503310e7b3ec1e3eafe9e
- https://gitlab.com/qemu-project/qemu/-/commit/2c9fb3b784000c1df32231e1c2464bb2e3fc4620
- https://gitlab.com/qemu-project/qemu/-/commit/735754aaa15a6ed46db51fd731e88331c446ea54
- https://security-tracker.debian.org/tracker/CVE-2020-15469
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15469
- https://nvd.nist.gov/vuln/detail/CVE-2020-15469
- https://ubuntu.com/security/CVE-2020-15469
Frequently Asked Questions
What is CVE-2020-15469?
CVE-2020-15469 is a vulnerability in QEMU 4.2.0 that could lead to a NULL pointer dereference due to a lack of read/write callback methods in a MemoryRegionOps object.
How severe is CVE-2020-15469?
CVE-2020-15469 has a severity level of 2.3, which is considered low.
What software versions are affected by CVE-2020-15469?
QEMU versions up to 5.0.1, Debian Linux 9.0, and Debian Linux 10.0 are affected by CVE-2020-15469.
How can I fix CVE-2020-15469?
To fix CVE-2020-15469, update QEMU to a version that includes the necessary read/write callback methods and apply any available patches or updates for your specific distribution.
Where can I find more information about CVE-2020-15469?
You can find more information about CVE-2020-15469 on the Openwall and QEMU mailing lists, as well as the Debian LTS announcement.
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