https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 07 Oct 2026 23:40:26 +0000 https://cve.radiocsirt.org/vuln/cve-2021-3489 <p><strong>Affected:</strong> Linux kernel</p> <p>The eBPF RINGBUF bpf_ringbuf_reserve() function in the Linux kernel did not check that the allocated size was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee (&#34;bpf, ringbuf: Deny reserve of buffers larger than ringbuf&#34;) (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced via 457f44363a88 (&#34;bpf: Implement BPF ring buffer and verifier support for it&#34;) (v5.8-rc1).</p> <p><strong>Affected:</strong> Linux kernel</p> <p>The eBPF RINGBUF bpf_ringbuf_reserve() function in the Linux kernel did not check that the allocated size was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee (&#34;bpf, ringbuf: Deny reserve of buffers larger than ringbuf&#34;) (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced via 457f44363a88 (&#34;bpf: Implement BPF ring buffer and verifier support for it&#34;) (v5.8-rc1).</p> https://cve.radiocsirt.org/vuln/cve-2021-3489