What’s Vulnerable › Vulnerabilities

CVE-2023-2860: Out-of-bounds read when setting hmac data

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-07-24 · updated 2026-06-17
• Weakness: CWE-125

Description

An out-of-bounds read vulnerability was found in the SR-IPv6 implementation in the Linux kernel. The flaw exists within the processing of seg6 attributes. The issue results from the improper validation of user-supplied data, which can result in a read past the end of an allocated buffer. This flaw allows a privileged local user to disclose sensitive information on affected installations of the Linux kernel.

Affected products

• Linux kernel: through 5.19.19; 6.0-rc1, 6.0-rc2, 6.0-rc3, 6.0-rc4

References

• https://access.redhat.com/security/cve/CVE-2023-2860
• https://bugzilla.redhat.com/show_bug.cgi?id=2218122
• https://www.zerodayinitiative.com/advisories/ZDI-CAN-18511
• https://access.redhat.com/security/cve/CVE-2023-2860
• https://bugzilla.redhat.com/show_bug.cgi?id=2218122
• https://www.zerodayinitiative.com/advisories/ZDI-CAN-18511

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