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CVE-2021-47486

HIGH
Published 2024-05-22T08:19:36.818Z
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CVSS Score

V3.1
7.5
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2023.03.01
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-01-25
Exploit Probability
Percentile: 0.178
Higher than 17.8% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

ca6cb5447ceca6a87d6b62c9e5d41042c34f7ffa ca6cb5447ceca6a87d6b62c9e5d41042c34f7ffa ca6cb5447ceca6a87d6b62c9e5d41042c34f7ffa
Linux

Linux

Affected Versions:

5.7 0 5.10.77 5.14.16 5.15
linux

linux_kernel

Affected Versions:

ca6cb5447cec
linux

linux_kernel

Affected Versions:

5.7
linux

linux_kernel

Affected Versions:

5.10.77
linux

linux_kernel

Affected Versions:

5.14.16
linux

linux_kernel

Affected Versions:

5.15 ca6cb5447cec ca6cb5447cec

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-h8rm-f377-9c5v

Advisory Details

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.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-47486
WEB https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b
WEB https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d
WEB https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41

Advisory provided by GitHub Security Advisory Database. Published: May 22, 2024, Modified: July 3, 2024

References

https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d
https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41
https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b
Published: 2024-05-22T08:19:36.818Z
Last Modified: 2025-05-04T07:12:07.846Z
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