CVE-2023-31083: Null Pointer Dereference
First published: Mon Apr 24 2023(Updated: )
A flaw in the Linux Kernel found in drivers/bluetooth/hci_ldisc.c. There is a race condition between HCIUARTSETPROTO and HCIUARTGETPROTO. HCI_UART_PROTO_SET is set before hu->proto is set. A NULL pointer dereference may occur. Reference: <a href="https://lore.kernel.org/all/CA+UBctC3p49aTgzbVgkSZ2+TQcqq4fPDO7yZitFT5uBPDeCO2g@mail.gmail.com/">https://lore.kernel.org/all/CA+UBctC3p49aTgzbVgkSZ2+TQcqq4fPDO7yZitFT5uBPDeCO2g@mail.gmail.com/</a>
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | =6.2 | |
| 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 |
| debian/linux-6.1 | 6.1.129-1~deb11u1 | |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 |
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Reference Links
- https://lore.kernel.org/all/CA+UBctC3p49aTgzbVgkSZ2+TQcqq4fPDO7yZitFT5uBPDeCO2g@mail.gmail.com/
- https://security.netapp.com/advisory/ntap-20230929-0003/
- https://bugzilla.suse.com/show_bug.cgi?id=1210780
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9c33663af9ad115f90c076a1828129a3fbadea98
- https://launchpad.net/bugs/cve/CVE-2023-31083
- https://lore.kernel.org/all/CA+UBctC3p49aTgzbVgkSZ2+TQcqq4fPDO7yZitFT5uBPDeCO2g%40mail.gmail.com/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2213133
- https://access.redhat.com/errata/RHSA-2024:2394
- https://access.redhat.com/errata/RHSA-2024:2950
- https://access.redhat.com/errata/RHSA-2024:3138
- https://bugzilla.redhat.com/show_bug.cgi?id=2213132
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-31083
- https://nvd.nist.gov/vuln/detail/CVE-2023-31083
- https://security-tracker.debian.org/tracker/CVE-2023-31083
- https://ubuntu.com/security/CVE-2023-31083
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2023-31083?
CVE-2023-31083 has a medium severity rating due to the potential for a NULL pointer dereference.
How do I fix CVE-2023-31083?
To fix CVE-2023-31083, upgrade the Linux kernel to versions 5.10.226-1, 6.1.128-1, or higher.
Which versions of the Linux Kernel are affected by CVE-2023-31083?
CVE-2023-31083 affects Linux Kernel version 6.2 and below.
What is the impacted component of CVE-2023-31083?
The impacted component in CVE-2023-31083 is the Bluetooth driver in the Linux Kernel.
Is CVE-2023-31083 a critical vulnerability?
CVE-2023-31083 is not classified as a critical vulnerability, but it could potentially lead to system instability.
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