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>

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/151dc8087b5609e53b069c068e3f3ee100efa586 cve-icon cve-icon
https://git.kernel.org/stable/c/27bdb134c043ff32c459d98f16550d0ffa0b3c34 cve-icon cve-icon
https://git.kernel.org/stable/c/46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13 cve-icon cve-icon
https://git.kernel.org/stable/c/5661f111a1616ac105ec8cec81bff99b60f847ac cve-icon cve-icon
https://git.kernel.org/stable/c/5b79fa628e2ab789e629a83cd211ef9b4c1a593e cve-icon cve-icon
https://git.kernel.org/stable/c/65b0bc7a0690861812ade523d19f82688ab819dc cve-icon cve-icon
https://git.kernel.org/stable/c/dbaab08c8677d598244d21afb7818e44e1c5d826 cve-icon cve-icon
https://git.kernel.org/stable/c/fcbd2b336834bd24e1d9454ad5737856470c10d7 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025050150-CVE-2022-49870-774b@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-49870 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-49870 cve-icon
History

Wed, 18 Jun 2025 10:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 6.0, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H'}

Fri, 02 May 2025 14:00:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Thu, 01 May 2025 14:30:00 +0000

Type Values Removed Values Added
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>
Title capabilities: fix undefined behavior in bit shift for CAP_TO_MASK
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-05-01T14:10:21.134Z

Updated: 2025-05-04T08:47:22.346Z

Reserved: 2025-05-01T14:05:17.237Z

Link: CVE-2022-49870

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-05-01T15:16:11.937

Modified: 2025-05-02T13:52:51.693

Link: CVE-2022-49870

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-05-01T00:00:00Z

Links: CVE-2022-49870 - Bugzilla