CVE-2022-0617: Null Pointer Dereference
First published: Mon Jan 24 2022(Updated: )
A flaw null pointer dereference in the Linux kernel UDF file system functionality was found in the way user triggers udf_file_write_iter function for the malicious UDF image. A local user could use this flaw to crash the system. Actual from Linux kernel 4.2-rc1 till 5.17-rc2.
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 | <0:5.14.0-162.6.1.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/Linux kernel | <5.17 | 5.17 |
| Linux Kernel | >=4.2.1<5.17 | |
| Linux Kernel | =4.2-rc1 | |
| Linux Kernel | =4.2-rc2 | |
| Linux Kernel | =4.2-rc3 | |
| Linux Kernel | =4.2-rc4 | |
| Linux Kernel | =4.2-rc5 | |
| Linux Kernel | =4.2-rc6 | |
| Linux Kernel | =4.2-rc7 | |
| Linux Kernel | =4.2-rc8 | |
| Linux Kernel | =4.2.0 | |
| Linux Kernel | =5.17 | |
| Linux Kernel | =5.17-rc1 | |
| Linux Kernel | =5.17-rc2 | |
| Debian Linux | =9.0 | |
| Debian Linux | =10.0 | |
| Debian Linux | =11.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
Remedy
As the UDF module (udf.ho) will be auto-loaded when required, its use can be disabled by preventing the module from loading with the following instructions: # echo "install udf /bin/true" >> /etc/modprobe.d/disable-udf.conf If the system requires this module t\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.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-0617 https://nvd.nist.gov/vuln/detail/CVE-2022-0617 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7fc3b7c2981bbd1047916ade327beccb90994eee https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ea8569194b43f0f01f0a84c689388542c7254a1f https://lore.kernel.org/lkml/20220114172329.ygzry5rlz64ua2nr@quack3.lan/T/
- https://bugzilla.redhat.com/show_bug.cgi?id=2053632
- https://access.redhat.com/errata/RHSA-2022:7444
- https://access.redhat.com/errata/RHSA-2022:7683
- https://access.redhat.com/errata/RHSA-2022:8267
- https://access.redhat.com/errata/RHSA-2022:7933
- https://access.redhat.com/security/cve/cve-2022-0617
- http://www.openwall.com/lists/oss-security/2022/04/13/2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7fc3b7c2981bbd1047916ade327beccb90994eee
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ea8569194b43f0f01f0a84c689388542c7254a1f
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://lore.kernel.org/lkml/20220114172329.ygzry5rlz64ua2nr@quack3.lan/T/
- https://www.debian.org/security/2022/dsa-5095
- https://www.debian.org/security/2022/dsa-5096
- https://launchpad.net/bugs/cve/CVE-2022-0617
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2053633
- https://access.redhat.com/errata/RHSA-2024:0724
- https://lore.kernel.org/lkml/20220114172329.ygzry5rlz64ua2nr%40quack3.lan/T/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-0617
- https://nvd.nist.gov/vuln/detail/CVE-2022-0617
- https://security-tracker.debian.org/tracker/CVE-2022-0617
- https://ubuntu.com/security/CVE-2022-0617
- https://git.kernel.org/linus/7fc3b7c2981bbd1047916ade327beccb90994eee
- https://git.kernel.org/linus/ea8569194b43f0f01f0a84c689388542c7254a1f
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2022-0617?
CVE-2022-0617 has been classified as a high severity vulnerability.
Who is affected by CVE-2022-0617?
CVE-2022-0617 affects local users of the Linux kernel versions from 4.2-rc1 to 5.17-rc2.
How do I fix CVE-2022-0617?
To remediate CVE-2022-0617, update to the latest kernel version specified by your distribution that is above the threshold versions.
What type of vulnerability is CVE-2022-0617?
CVE-2022-0617 is a local denial-of-service vulnerability due to a null pointer dereference in the UDF file system.
Can CVE-2022-0617 crash my system?
Yes, an exploit of CVE-2022-0617 can lead to a crash of the system.
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