Riskcovery

CVE-2022-50331

wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()

State
Published
Severity
Not scored
Published
Sep 15, 2025
Updated
May 11, 2026
Reserved
Sep 15, 2025

Read the record on cve.org

Description

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

wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()

Inject fault while probing module, if device_register() fails, but the refcount of kobject is not decreased to 0, the name allocated in dev_set_name() is leaked. Fix this by calling put_device(), so that name can be freed in callback function kobject_cleanup().

unreferenced object 0xffff88810152ad20 (size 8): comm "modprobe", pid 252, jiffies 4294849206 (age 22.713s) hex dump (first 8 bytes): 68 77 73 69 6d 30 00 ff hwsim0.. backtrace: [<000000009c3504ed>] __kmalloc_node_track_caller+0x44/0x1b0 [<00000000c0228a5e>] kvasprintf+0xb5/0x140 [<00000000cff8c21f>] kvasprintf_const+0x55/0x180 [<0000000055a1e073>] kobject_set_name_vargs+0x56/0x150 [<000000000a80b139>] dev_set_name+0xab/0xe0

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • f36a111a74e71edbba27d4c0cf3d7bbccc172108 to before 50c31fa952309536c6e4461ff815ddccc8dff9d5Affected
  • f36a111a74e71edbba27d4c0cf3d7bbccc172108 to before d87973314aba6de80a49f4271dd9be4ddc08e729Affected
  • f36a111a74e71edbba27d4c0cf3d7bbccc172108 to before 258ad2fe5ede773625adfda88b173f4123e59f45Affected
LinuxLinux
  • 5.14Affected
  • before 5.14Not affected
  • 5.15.76 through 5.15.*Not affected
  • 6.0.6 through 6.0.*Not affected
  • 6.1 and laterNot affected

References

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