Ubuntu.comUB:CVE-2021-47486CVE-2021-47486
In the Linux kernel, the following vulnerability has been resolved: riscv,
bpf: Fix potential NULL dereference The bpf_jit_binary_free() function
requires a non-NULL argument. When the RISC-V BPF JIT fails to converge in
NR_JIT_ITERATIONS steps, jit_data->header will be NULL, which triggers a
NULL dereference. Avoid this by checking the argument, prior calling the
function.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
References
git.kernel.org/linus/27de809a3d83a6199664479ebb19712533d6fd9b (5.15)
git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b
git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d
git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41
launchpad.net/bugs/cve/CVE-2021-47486
nvd.nist.gov/vuln/detail/CVE-2021-47486
security-tracker.debian.org/tracker/CVE-2021-47486
www.cve.org/CVERecord?id=CVE-2021-47486
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