CVE-2022-1974: Use After Free
First published: Wed Aug 31 2022(Updated: )
A use-after-free flaw was found in the Linux kernel's NFC core functionality due to a race condition between kobject creation and delete. This vulnerability allows a local attacker with CAP_NET_ADMIN privilege to leak kernel information.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | =5.18-rc6 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.22-1 |
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Reference Links
- https://github.com/torvalds/linux/commit/da5c0f119203ad9728920456a0f52a6d850c01cd
- https://launchpad.net/bugs/cve/CVE-2022-1974
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-1974
- https://nvd.nist.gov/vuln/detail/CVE-2022-1974
- https://security-tracker.debian.org/tracker/CVE-2022-1974
- https://ubuntu.com/security/CVE-2022-1974
- https://www.openwall.com/lists/oss-security/2022/06/05/1
- https://git.kernel.org/linus/da5c0f119203ad9728920456a0f52a6d850c01cd
Frequently Asked Questions
What is the severity of CVE-2022-1974?
CVE-2022-1974 is considered a medium severity vulnerability due to its potential for information leakage.
How do I fix CVE-2022-1974?
To mitigate CVE-2022-1974, updated versions of affected Linux kernel packages such as 5.10.223-1 or 6.1.123-1 should be installed.
Who is affected by CVE-2022-1974?
CVE-2022-1974 affects users of the Linux kernel versions prior to the patched updates, specifically those with CAP_NET_ADMIN privilege.
What type of vulnerability is CVE-2022-1974?
CVE-2022-1974 is classified as a use-after-free vulnerability caused by a race condition in the NFC core functionality.
Can CVE-2022-1974 be exploited remotely?
CVE-2022-1974 requires local access for exploitation, making it a local privilege escalation vulnerability.
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