{"id":"CVE-2022-50331","state":"PUBLISHED","title":"wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()\n\nInject fault while probing module, if device_register() fails,\nbut the refcount of kobject is not decreased to 0, the name\nallocated in dev_set_name() is leaked. Fix this by calling\nput_device(), so that name can be freed in callback function\nkobject_cleanup().\n\nunreferenced object 0xffff88810152ad20 (size 8):\n  comm \"modprobe\", pid 252, jiffies 4294849206 (age 22.713s)\n  hex dump (first 8 bytes):\n    68 77 73 69 6d 30 00 ff                          hwsim0..\n  backtrace:\n    [<000000009c3504ed>] __kmalloc_node_track_caller+0x44/0x1b0\n    [<00000000c0228a5e>] kvasprintf+0xb5/0x140\n    [<00000000cff8c21f>] kvasprintf_const+0x55/0x180\n    [<0000000055a1e073>] kobject_set_name_vargs+0x56/0x150\n    [<000000000a80b139>] dev_set_name+0xab/0xe0","publishedAt":"2025-09-15T14:49:41.415Z","updatedAt":"2026-05-11T19:17:23.236Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f36a111a74e71edbba27d4c0cf3d7bbccc172108","status":"affected","lessThan":"50c31fa952309536c6e4461ff815ddccc8dff9d5","versionType":"git"},{"version":"f36a111a74e71edbba27d4c0cf3d7bbccc172108","status":"affected","lessThan":"d87973314aba6de80a49f4271dd9be4ddc08e729","versionType":"git"},{"version":"f36a111a74e71edbba27d4c0cf3d7bbccc172108","status":"affected","lessThan":"258ad2fe5ede773625adfda88b173f4123e59f45","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wwan/wwan_hwsim.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.15.76","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.6","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wwan/wwan_hwsim.c"]}],"references":["https://git.kernel.org/stable/c/50c31fa952309536c6e4461ff815ddccc8dff9d5","https://git.kernel.org/stable/c/d87973314aba6de80a49f4271dd9be4ddc08e729","https://git.kernel.org/stable/c/258ad2fe5ede773625adfda88b173f4123e59f45"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50331.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50331","state":"PUBLISHED","datePublished":"2025-09-15T14:49:41.415Z","dateUpdated":"2026-05-11T19:17:23.236Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-15T14:18:36.816Z"},"containers":{"cna":{"title":"wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()\n\nInject fault while probing module, if device_register() fails,\nbut the refcount of kobject is not decreased to 0, the name\nallocated in dev_set_name() is leaked. Fix this by calling\nput_device(), so that name can be freed in callback function\nkobject_cleanup().\n\nunreferenced object 0xffff88810152ad20 (size 8):\n  comm \"modprobe\", pid 252, jiffies 4294849206 (age 22.713s)\n  hex dump (first 8 bytes):\n    68 77 73 69 6d 30 00 ff                          hwsim0..\n  backtrace:\n    [<000000009c3504ed>] __kmalloc_node_track_caller+0x44/0x1b0\n    [<00000000c0228a5e>] kvasprintf+0xb5/0x140\n    [<00000000cff8c21f>] kvasprintf_const+0x55/0x180\n    [<0000000055a1e073>] kobject_set_name_vargs+0x56/0x150\n    [<000000000a80b139>] dev_set_name+0xab/0xe0"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f36a111a74e71edbba27d4c0cf3d7bbccc172108","status":"affected","lessThan":"50c31fa952309536c6e4461ff815ddccc8dff9d5","versionType":"git"},{"version":"f36a111a74e71edbba27d4c0cf3d7bbccc172108","status":"affected","lessThan":"d87973314aba6de80a49f4271dd9be4ddc08e729","versionType":"git"},{"version":"f36a111a74e71edbba27d4c0cf3d7bbccc172108","status":"affected","lessThan":"258ad2fe5ede773625adfda88b173f4123e59f45","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wwan/wwan_hwsim.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"5.15.76","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.6","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wwan/wwan_hwsim.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/50c31fa952309536c6e4461ff815ddccc8dff9d5"},{"url":"https://git.kernel.org/stable/c/d87973314aba6de80a49f4271dd9be4ddc08e729"},{"url":"https://git.kernel.org/stable/c/258ad2fe5ede773625adfda88b173f4123e59f45"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:17:23.236Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.15.76"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.0.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}