CVE-2022-2991: Linux Kernel LightNVM Subsystem Heap-based Overflow Privilege Escalation Vulnerability
First published: Mon Jul 11 2022(Updated: )
A heap-based buffer overflow was found in the Linux kernel's LightNVM subsystem. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. This vulnerability allows a local attacker to escalate privileges and execute arbitrary code in the context of the kernel. The attacker must first obtain the ability to execute high-privileged code on the target system to exploit this vulnerability.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.15 | 5.15 |
| Red Hat Kernel-devel | ||
| Linux Kernel | <5.15 | |
| 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 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-2991 https://nvd.nist.gov/vuln/detail/CVE-2022-2991 https://www.zerodayinitiative.com/advisories/ZDI-22-960/
- https://bugzilla.redhat.com/show_bug.cgi?id=2107066
- https://access.redhat.com/security/cve/CVE-2022-2991
- https://www.zerodayinitiative.com/advisories/ZDI-22-960/
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/lightnvm/Kconfig?h=v5.10.114&id=549209caabc89f2877ad5f62d11fca5c052e0e8
- https://access.redhat.com/security/cve/cve-2022-2991
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/lightnvm/Kconfig?h=v5.10.114&id=549209caabc89f2877ad5f62d11fca5c052e0e8
- https://launchpad.net/bugs/cve/CVE-2022-2991
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2991
- https://nvd.nist.gov/vuln/detail/CVE-2022-2991
- https://security-tracker.debian.org/tracker/CVE-2022-2991
- https://ubuntu.com/security/CVE-2022-2991
Frequently Asked Questions
What is the severity of CVE-2022-2991?
The severity of CVE-2022-2991 is rated as high due to its potential to allow local attackers to escalate privileges.
How does CVE-2022-2991 affect the Linux kernel?
CVE-2022-2991 affects the Linux kernel's LightNVM subsystem, specifically due to a heap-based buffer overflow resulting from improper validation of user-supplied data.
How can I fix CVE-2022-2991?
To fix CVE-2022-2991, upgrade the Linux kernel to version 5.15 or later.
Which versions of the Linux kernel are vulnerable to CVE-2022-2991?
Versions of the Linux kernel prior to 5.15 are vulnerable to CVE-2022-2991.
What kind of attack can CVE-2022-2991 facilitate?
CVE-2022-2991 can facilitate local privilege escalation attacks, allowing attackers to gain unauthorized access to elevated privileges.
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