CVE-2023-46862: Null Pointer Dereference
First published: Sun Oct 29 2023(Updated: )
An issue was discovered in the Linux kernel through 6.5.9. During a race with SQ thread exit, an io_uring/fdinfo.c io_uring_show_fdinfo NULL pointer dereference can occur.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <=6.5.9 | |
| IBM Security Guardium | <=12.0 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.112-1 6.11.7-1 6.11.9-1 |
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Reference Links
- https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46
- https://bugzilla.kernel.org/show_bug.cgi?id=218032#c4
- https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
- https://launchpad.net/bugs/cve/CVE-2023-46862
- https://git.kernel.org/linus/7644b1a1c9a7ae8ab99175989bfc8676055edb46
- https://ubuntu.com/security/notices/USN-6533-1
- https://ubuntu.com/security/notices/USN-6624-1
- https://ubuntu.com/security/notices/USN-6652-1
- https://ubuntu.com/security/notices/USN-6686-1
- https://ubuntu.com/security/notices/USN-6686-2
- https://ubuntu.com/security/notices/USN-6686-3
- https://ubuntu.com/security/notices/USN-6686-4
- https://ubuntu.com/security/notices/USN-6705-1
- https://ubuntu.com/security/notices/USN-6686-5
- https://www.cve.org/CVERecord?id=CVE-2023-46862
- https://nvd.nist.gov/vuln/detail/CVE-2023-46862
- https://security-tracker.debian.org/tracker/CVE-2023-46862
- https://git.kernel.org/linus/dbbe9c642411c359ad0a0e32442eb2e11d3811b5
- https://ubuntu.com/security/CVE-2023-46862
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2251043
- https://access.redhat.com/errata/RHSA-2024:2394
- https://bugzilla.redhat.com/show_bug.cgi?id=2246980
- https://exchange.xforce.ibmcloud.com/vulnerabilities/269833
- https://www.ibm.com/support/pages/node/7152469 (Advisory)
Frequently Asked Questions
What is the vulnerability ID for this Linux kernel issue?
The vulnerability ID is CVE-2023-46862.
What is the severity level of CVE-2023-46862?
CVE-2023-46862 has a severity level of medium.
What is the affected software?
The affected software is the Linux kernel version up to and including 6.5.9.
What is the Common Weakness Enumeration (CWE) for this vulnerability?
The CWE for CVE-2023-46862 is CWE-476.
Are there any references for further information on this vulnerability?
Yes, you can find more information on CVE-2023-46862 in the following references: [link 1](https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46), [link 2](https://bugzilla.kernel.org/show_bug.cgi?id=218032#c4).
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