CVE-2026-74598

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

CVE-2026-74598 ipv6: fix Route Information option length validation

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

CVE-2026-74598

CVE-2026-74598 is an off-by-one length validation error in the Linux kernel's rt6_route_rcv() function, which processes IPv6 Route Information options (RFC 4191) from Router Advertisements. The code accepts length >= 2 and length >= 1 where the RFC requires stricter minimums, causing ipv6_a...

EUVD-2026-64535

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

CVE-2026-68767

hashcat through 7.1.2 contains an off-by-one out-of-bounds heap write in the fgetl() function (src/filehandling.c). When an input line is exactly HCBUFSIZ_LARGE bytes long, the function writes a null terminator one byte past the caller's buffer. An attacker can trigger this by supplying a crafted...

PT-2026-79603

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6 route rcv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of...

EUVD-2026-63508

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 <2.1.13 and

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-2026-73256 Mongoose: HTTP/1.0 detection off-by-one enables request smuggling via chunked TE

Mongoose is an embedded web server and network library. Prior to 7.22, a remote unauthenticated attacker can exploit an HTTP/1.0 reverse-proxy deployment by sending a request with Transfer-Encoding: chunked and conflicting framing. The httpcb function in src/http.c tests hm.proto.len with an...

CVE-2026-73256 Mongoose: HTTP/1.0 detection off-by-one enables request smuggling via chunked TE

Mongoose is an embedded web server and network library. Prior to 7.22, a remote unauthenticated attacker can exploit an HTTP/1.0 reverse-proxy deployment by sending a request with Transfer-Encoding: chunked and conflicting framing. The httpcb function in src/http.c tests hm.proto.len with an...

CVE-2026-16909

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to an off-by-one error in bounds checking...

EUVD-2026-62830

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to an off-by-one error in bounds checking...

CVE-2026-16909

IBM AIX 7.2, 7.3, and PowerVM VIOS 4.1 contain an off-by-one error in bounds checking, enabling a remote attacker to execute arbitrary code (CVSS 8.8, HIGH). IBM's advisory is linked; no exploitation evidence is provided. Patch availability is not specified in the documents.

CVE-2026-16909 Vulnerabilities in IBM AIX and PowerVM VIOS

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to an off-by-one error in bounds checking...

CVE-2026-74495

A flaw was found in the igbvf driver of the Linux kernel. An off-by-one error during the cleanup of transmit TX Direct Memory Access DMA buffer mappings can lead to a memory leak. If an error occurs while mapping TX buffers, one DMA mapping may not be properly unmapped, potentially impacting syst...

CVE-2026-72345

A flaw was found in the Linux kernel's mlx5 LAG Link Aggregation Group driver. An off-by-one error in the mlx5lagcreatesinglefdb function's error rollback mechanism can lead to operations on uninitialized memory or a double-free condition. This could result in system instability or a denial of...

glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list"

A flaw was found in GLib. An off-by-one error can occur in the gkeyfilegetlocalestringlist function in the gkeyfile.c file when loading a key file with an empty value. This flaw can cause an out-of-bounds access of 1 byte or a denial of service when the out-of-bounds access crosses a page boundar...

glib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal()

A flaw was found in GLib. An off-by-one error can occur in the gvstupleisnormal function in the glib/gvariant-serialiser.c file when doing an alignment padding check because the bounds check uses instead of =, causing an out-of-bounds read of only 1 byte. This issue can cause a minor information...