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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

PUBLISHED Reserved 2025-09-15 | Published 2025-09-15 | Updated 2025-09-15 | Assigner Linux

Product status

Default status
unaffected

f36a111a74e71edbba27d4c0cf3d7bbccc172108 (git) before 50c31fa952309536c6e4461ff815ddccc8dff9d5
affected

f36a111a74e71edbba27d4c0cf3d7bbccc172108 (git) before d87973314aba6de80a49f4271dd9be4ddc08e729
affected

f36a111a74e71edbba27d4c0cf3d7bbccc172108 (git) before 258ad2fe5ede773625adfda88b173f4123e59f45
affected

Default status
affected

5.14
affected

Any version before 5.14
unaffected

5.15.76 (semver)
unaffected

6.0.6 (semver)
unaffected

6.1 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/50c31fa952309536c6e4461ff815ddccc8dff9d5

git.kernel.org/...c/d87973314aba6de80a49f4271dd9be4ddc08e729

git.kernel.org/...c/258ad2fe5ede773625adfda88b173f4123e59f45

cve.org (CVE-2022-50331)

nvd.nist.gov (CVE-2022-50331)

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