CVE-2023-2860: Linux Kernel IPv6 Segment Routing Out-Of-Bounds Read Information Disclosure Vulnerability
First published: Wed Jun 28 2023(Updated: )
An out-of-bounds read vulnerability was found in the SR-IPv6 implementation in the Linux kernel. Quoting ZDI security advisory [1]: "This vulnerability allows local attackers to disclose sensitive information on affected installations of the Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the processing of seg6 attributes. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel." [1] <a href="https://www.zerodayinitiative.com/advisories/ZDI-CAN-18511/">https://www.zerodayinitiative.com/advisories/ZDI-CAN-18511/</a>
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <=5.19.19 | |
| Linux Linux kernel | =6.0-rc1 | |
| Linux Linux kernel | =6.0-rc2 | |
| Linux Linux kernel | =6.0-rc3 | |
| Linux Linux kernel | =6.0-rc4 | |
| Linux kernel | ||
| redhat/kernel | <6.0 | 6.0 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2023-2860
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-18511
- https://bugzilla.redhat.com/show_bug.cgi?id=2218122
- https://launchpad.net/bugs/cve/CVE-2023-2860
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=84a53580c5d2
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-18511/
- https://github.com/torvalds/linux/commit/84a5358
- https://git.kernel.org/linus/84a53580c5d2138c7361c7c3eea5b31827e63b35
- https://security-tracker.debian.org/tracker/CVE-2023-2860
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2860
- https://nvd.nist.gov/vuln/detail/CVE-2023-2860
- https://ubuntu.com/security/CVE-2023-2860
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