CVE-2021-47486
riscv, bpf: Fix potential NULL dereference
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
En el kernel de Linux, se resolvió la siguiente vulnerabilidad: riscv, bpf: corrige una posible desreferencia NULL La función bpf_jit_binary_free() requiere un argumento que no sea NULL. Cuando el JIT BPF de RISC-V no logra converger en los pasos NR_JIT_ITERATION, jit_data->header será NULL, lo que desencadena una desreferencia NULL. Evite esto verificando el argumento antes de llamar a la función.
CVSS Scores
SSVC
- Decision:Attend
Timeline
- 2024-05-22 CVE Reserved
- 2024-05-22 CVE Published
- 2024-05-23 EPSS Updated
- 2024-08-20 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (4)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/ca6cb5447ceca6a87d6b62c9e5d41042c34f7ffa | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.7 < 5.10.77 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.10.77" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.7 < 5.14.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.14.16" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.7 < 5.15 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.15" | en |
Affected
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