Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: libevent (UTSA-2026-124531)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-124531 advisory. Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an off-by-one stack buffer overflow in evdns.c when dnsnametolabels formats ...

libevent security update

2.1.8-11 - Fix CVE-2026-63385: HTTP header injection via CRLF in header values - Resolves: RHEL-253566 2.1.8-10 - Fix CVE-2026-63387: out-of-bounds write in evdns dnsnametolabels - Resolves: RHEL-249889 2.1.8-9 - Fix CVE-2026-63383: out-of-bounds read in decodetaginternal - Resolves: RHEL-250240...

libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption

A flaw was found in Libevent, an event notification library. An off-by-one stack buffer overflow exists in the dnsnametolabels function when processing a name-bearing DNS record. A remote attacker could send a specially crafted DNS server response, which may lead to a crash or corruption of the...

libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption

A flaw was found in Libevent, an event notification library. An off-by-one stack buffer overflow exists in the dnsnametolabels function when processing a name-bearing DNS record. A remote attacker could send a specially crafted DNS server response, which may lead to a crash or corruption of the...

libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption

A flaw was found in Libevent, an event notification library. An off-by-one stack buffer overflow exists in the dnsnametolabels function when processing a name-bearing DNS record. A remote attacker could send a specially crafted DNS server response, which may lead to a crash or corruption of the...

CVE-2026-63387

A flaw was found in Libevent, an event notification library. An off-by-one stack buffer overflow exists in the dnsnametolabels function when processing a name-bearing DNS record. A remote attacker could send a specially crafted DNS server response, which may lead to a crash or corruption of the...

The vulnerability of the dnsname_to_labels() function in the Libevent event-driven notification library allows a attacker to cause a service failure.

The vulnerability of the dnsnametolabels function in the Libevent asynchronous event notification library is related to the occurrence of operations outside the buffer in memory. Exploiting this vulnerability could allow a malicious actor to cause service failures...

CVE-2026-63387 Libevent: Off-by-one stack buffer overflow in dnsname_to_labels via crafted DNS server response

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an off-by-one stack buffer overflow in evdns.c when dnsnametolabels formats a name-bearing DNS record at the end of the 64 KB stack buffer allocated by evdnsserverrequestformatresponse. The final-label check...

CVE-2026-63387 Libevent: Off-by-one stack buffer overflow in dnsname_to_labels via crafted DNS server response

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an off-by-one stack buffer overflow in evdns.c when dnsnametolabels formats a name-bearing DNS record at the end of the 64 KB stack buffer allocated by evdnsserverrequestformatresponse. The final-label check...

CVE-2026-63387: Stack-based Buffer Overflow

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an off-by-one stack buffer overflow in evdns.c when dnsnametolabels formats a name-bearing DNS record at the end of the 64 KB stack buffer allocated by evdnsserverrequestformatresponse. The final-label check...