Vulnerability Details : CVE-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.
Products affected by CVE-2021-47486
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Exploit prediction scoring system (EPSS) score for CVE-2021-47486
0.34%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 55 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-47486
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2024-07-03 |
CWE ids for CVE-2021-47486
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
References for CVE-2021-47486
-
https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b
riscv, bpf: Fix potential NULL dereference - kernel/git/stable/linux.git - Linux kernel stable tree
-
https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d
riscv, bpf: Fix potential NULL dereference - kernel/git/stable/linux.git - Linux kernel stable tree
-
https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41
riscv, bpf: Fix potential NULL dereference - kernel/git/stable/linux.git - Linux kernel stable tree
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