CVE-2021-47300

CVE-2021-47300 concerns a Linux kernel issue in BPF tail calls where tail_call_reachable was not propagated correctly in the interpreter when JIT failed. The root cause, described across multiple sources, is that a previous rejection path (from commits like e411901c0b77) incorrectly left env->...

CVE-2021-47300 bpf: Fix tail_call_reachable rejection for interpreter when jit failed

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix tailcallreachable rejection for interpreter when jit failed During testing of f263a81451c1 "bpf: Track subprog poke descriptors correctly and fix use-after-free" under various failure conditions, for example, when...

CVE-2021-47300 bpf: Fix tail_call_reachable rejection for interpreter when jit failed

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix tailcallreachable rejection for interpreter when jit failed During testing of f263a81451c1 "bpf: Track subprog poke descriptors correctly and fix use-after-free" under various failure conditions, for example, when...