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CVE-2022-49870

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: capabilities: fix undefined behavior in bit shift for CAP_TO_MASK Shifting signed 32-bit value by 31 bits is undefined, so chan…

Published May 1, 2025CWE-125EPSS 0.22%

Overview

CVE-2022-49870 is a high-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

capabilities: fix undefined behavior in bit shift for CAP_TO_MASK

Shifting signed 32-bit value by 31 bits is undefined, so changing

significant bit to unsigned. The UBSAN warning calltrace like below:

UBSAN: shift-out-of-bounds in security/commoncap.c:1252:2

left shift of 1 by 31 places cannot be represented in type 'int'

Call Trace:

<TASK>

dump_stack_lvl+0x7d/0xa5

dump_stack+0x15/0x1b

ubsan_epilogue+0xe/0x4e

__ubsan_handle_shift_out_of_bounds+0x1e7/0x20c

cap_task_prctl+0x561/0x6f0

security_task_prctl+0x5a/0xb0

__x64_sys_prctl+0x61/0x8f0

do_syscall_64+0x58/0x80

entry_SYSCALL_64_after_hwframe+0x63/0xcd

</TASK>

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/151dc8087b5609e53b069c068e3f3ee100efa586Refgit.kernel.org/stable/c/27bdb134c043ff32c459d98f16550d0ffa0b3c34Refgit.kernel.org/stable/c/46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13Refgit.kernel.org/stable/c/5661f111a1616ac105ec8cec81bff99b60f847acRefgit.kernel.org/stable/c/5b79fa628e2ab789e629a83cd211ef9b4c1a593eRefgit.kernel.org/stable/c/65b0bc7a0690861812ade523d19f82688ab819dcRefgit.kernel.org/stable/c/dbaab08c8677d598244d21afb7818e44e1c5d826Refgit.kernel.org/stable/c/fcbd2b336834bd24e1d9454ad5737856470c10d7

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49870?

CVE-2022-49870 is a high-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2022-49870?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49870?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-49870?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49870 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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