wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()

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

EPSS (exploitation in 30 days)

0.16% · top 95% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Weakness

• CWE-401 (opens in a new tab)All about CWE-401 and its CVEs

Affected products

• Linux · Linux

  • affected f36a111a74e71edbba27d4c0cf3d7bbccc172108 – < 50c31fa952309536c6e4461ff815ddccc8dff9d5
  • affected f36a111a74e71edbba27d4c0cf3d7bbccc172108 – < d87973314aba6de80a49f4271dd9be4ddc08e729
  • affected f36a111a74e71edbba27d4c0cf3d7bbccc172108 – < 258ad2fe5ede773625adfda88b173f4123e59f45

• Linux · Linux

  • affected 5.14
  • unaffected < 5.14
  • unaffected 5.15.76 – ≤ 5.15.*
  • unaffected 6.0.6 – ≤ 6.0.*
  • unaffected 6.1 – ≤ *

References (3)

• https://git.kernel.org/stable/c/50c31fa952309536c6e4461ff815ddccc8dff9d5 (opens in a new tab)
• https://git.kernel.org/stable/c/d87973314aba6de80a49f4271dd9be4ddc08e729 (opens in a new tab)
• https://git.kernel.org/stable/c/258ad2fe5ede773625adfda88b173f4123e59f45 (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2022-50331](https://trackcve.app/badge/CVE-2022-50331.svg)](https://trackcve.app/cve/CVE-2022-50331)

Record last updated 11 May 2026, 19:17 UTC.