Linux Kernel Heap Buffer Overflow DoS

The vulnerability of the lowpaniphcmcastctxaddrcompress function in the net/6lowpan/iphc.c module of the Linux kernel’s networking functions is related to a single-shift error. Exploiting this vulnerability could allow an attacker to cause a system failure...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100713)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100713 advisory. In the Linux kernel, the following vulnerability has been resolved: 6lowpan: fix off-by-one in multicast context address compression The second memcpy in...

Linux Distros Unpatched Vulnerability : CVE-2026-53263

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 6lowpan: fix off-by-one in multicast context address compression The second memcpy in lowpaniphcmcastctxaddrcompress uses &data1 as destination and...

6lowpan: fix off-by-one in multicast context address compression

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CVE-2026-53263

A flaw was found in the Linux kernel's 6lowpan component. An off-by-one error during multicast context address compression can lead to the transmission of uninitialized kernel stack memory over the network. This vulnerability results in information disclosure, potentially allowing an attacker to...

AZL-90491 CVE-2026-53263 affecting package kernel for versions less than 6.6.143.1-1

In the Linux kernel, the following vulnerability has been resolved: 6lowpan: fix off-by-one in multicast context address compression The second memcpy in lowpaniphcmcastctxaddrcompress uses &data1 as destination and &ipaddr-s6addr11 as source, but both should be offset by one: &data2 and...

CVE-2026-53263

In the Linux kernel, the following vulnerability has been resolved: 6lowpan: fix off-by-one in multicast context address compression The second memcpy in lowpaniphcmcastctxaddrcompress uses &data1 as destination and &ipaddr-s6addr11 as source, but both should be offset by one: &data2 and...

CVE-2026-53263

In the Linux kernel, the following vulnerability has been resolved: 6lowpan: fix off-by-one in multicast context address compression The second memcpy in lowpaniphcmcastctxaddrcompress uses &data1 as destination and &ipaddr-s6addr11 as source, but both should be offset by one: &data2 and...

CVE-2026-53263 6lowpan: fix off-by-one in multicast context address compression

In the Linux kernel, the following vulnerability has been resolved: 6lowpan: fix off-by-one in multicast context address compression The second memcpy in lowpaniphcmcastctxaddrcompress uses &data1 as destination and &ipaddr-s6addr11 as source, but both should be offset by one: &data2 and...

CVE-2026-53263

CVE-2026-53263 is reported in OSV entries as affecting the rootio-linux package in Ubuntu/Debian environments, with patches available in multiple fixed versions (e.g., Root:Ubuntu:22.04 and Root:Ubuntu:24.04; Debian 11/12 tracks). The Debian/Ubuntu Nessus OSV entries note patches for these distri...

CVE-2023-37281 Out-of-bounds read during IPHC address decompression

Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when processing the various IPv6 header fields during IPHC header decompression, Contiki-NG confirms the received packet buffer contains enough data as needed for that field. But no similar check is done...