CVE-2022-50477

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-50477
In the Linux kernel, the following vulnerability has been resolved: rtc: class: Fix potential memleak in devm_rtc_allocate_device() devm_rtc_allocate_device() will alloc a rtc_device first, and then run dev_set_name(). If dev_set_name() failed, the rtc_device will memleak. Move devm_add_action_or_reset() in front of dev_set_name() to prevent memleak. unreferenced object 0xffff888110a53000 (size 2048): comm "python3", pid 470, jiffies 4296078308 (age 58.882s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 08 30 a5 10 81 88 ff ff .........0...... 08 30 a5 10 81 88 ff ff 00 00 00 00 00 00 00 00 .0.............. backtrace: [<000000004aac0364>] kmalloc_trace+0x21/0x110 [<000000000ff02202>] devm_rtc_allocate_device+0xd4/0x400 [<000000001bdf5639>] devm_rtc_device_register+0x1a/0x80 [<00000000351bf81c>] rx4581_probe+0xdd/0x110 [rtc_rx4581] [<00000000f0eba0ae>] spi_probe+0xde/0x130 [<00000000bff89ee8>] really_probe+0x175/0x3f0 [<00000000128e8d84>] __driver_probe_device+0xe6/0x170 [<00000000ee5bf913>] device_driver_attach+0x32/0x80 [<00000000f3f28f92>] bind_store+0x10b/0x1a0 [<000000009ff812d8>] drv_attr_store+0x49/0x70 [<000000008139c323>] sysfs_kf_write+0x8d/0xb0 [<00000000b6146e01>] kernfs_fop_write_iter+0x214/0x2d0 [<00000000ecbe3895>] vfs_write+0x61a/0x7d0 [<00000000aa2196ea>] ksys_write+0xc8/0x190 [<0000000046a600f5>] do_syscall_64+0x37/0x90 [<00000000541a336f>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0bcfc8fd3e596994f527b46730579428b3a4fa5f Patch
https://git.kernel.org/stable/c/59457a0f079eae19aaf322b3cc1c8ba66f55c5f3 Patch
https://git.kernel.org/stable/c/60da73808298ff2cfa9f165d55eb3d7aa7078601 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

23 Jan 2026, 16:32

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/0bcfc8fd3e596994f527b46730579428b3a4fa5f - () https://git.kernel.org/stable/c/0bcfc8fd3e596994f527b46730579428b3a4fa5f - Patch
References () https://git.kernel.org/stable/c/59457a0f079eae19aaf322b3cc1c8ba66f55c5f3 - () https://git.kernel.org/stable/c/59457a0f079eae19aaf322b3cc1c8ba66f55c5f3 - Patch
References () https://git.kernel.org/stable/c/60da73808298ff2cfa9f165d55eb3d7aa7078601 - () https://git.kernel.org/stable/c/60da73808298ff2cfa9f165d55eb3d7aa7078601 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel
CWE CWE-401
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

04 Oct 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-10-04 16:15

Updated : 2026-01-23 16:32

NVD link : CVE-2022-50477

Mitre link : CVE-2022-50477

CVE.ORG link : CVE-2022-50477

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime