CVE-2022-50352

net: hns: fix possible memory leak in hnae_ae_register()

State: Published
Severity: 5.5 Medium
Published: Sep 16, 2025
Updated: May 11, 2026
Reserved: Sep 16, 2025

Description

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

net: hns: fix possible memory leak in hnae_ae_register()

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 0xffff00c01aba2100 (size 128): comm "systemd-udevd", pid 1259, jiffies 4294903284 (age 294.152s) hex dump (first 32 bytes): 68 6e 61 65 30 00 00 00 18 21 ba 1a c0 00 ff ff hnae0....!...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000034783f26>] slab_post_alloc_hook+0xa0/0x3e0 [<00000000748188f2>] __kmem_cache_alloc_node+0x164/0x2b0 [<00000000ab0743e8>] __kmalloc_node_track_caller+0x6c/0x390 [<000000006c0ffb13>] kvasprintf+0x8c/0x118 [<00000000fa27bfe1>] kvasprintf_const+0x60/0xc8 [<0000000083e10ed7>] kobject_set_name_vargs+0x3c/0xc0 [<000000000b87affc>] dev_set_name+0x7c/0xa0 [<000000003fd8fe26>] hnae_ae_register+0xcc/0x190 [hnae] [<00000000fe97edc9>] hns_dsaf_ae_init+0x9c/0x108 [hns_dsaf] [<00000000c36ff1eb>] hns_dsaf_probe+0x548/0x748 [hns_dsaf]

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-401 Missing Release of Memory after Effective Lifetime

Affected Products

Product	Versions
LinuxLinux	6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before a3c148955c22fe1d94d7a2096005679c1f22eddfAffected 6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before 3b78453cca046d3b03853f0d077ad3ad130db886Affected 6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before 7ae1345f6ad715acbcdc9e1ac28153684fd498bbAffected 6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before dfc0337c6dceb6449403b33ecb141f4a1458a1e9Affected 6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before 2974f3b330ef25f5d34a4948d04290c2cd7802cfAffected 6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before 91f8f5342bee726ed5692583d58f69e7cc9ae60eAffected 6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before 02dc0db19d944b4a90941db505ecf1aaec714be4Affected 6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before ff2f5ec5d009844ec28f171123f9e58750cef4bfAffected
LinuxLinux	4.4Affected before 4.4Not affected 4.9.332 through 4.9.Not affected 4.14.298 through 4.14.Not affected 4.19.264 through 4.19.Not affected 5.4.221 through 5.4.Not affected 5.10.152 through 5.10.Not affected 5.15.76 through 5.15.Not affected 6.0.6 through 6.0.*Not affected 6.1 and laterNot affected

Product

Versions

LinuxLinux

6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before a3c148955c22fe1d94d7a2096005679c1f22eddfAffected
6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before 3b78453cca046d3b03853f0d077ad3ad130db886Affected
6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before 7ae1345f6ad715acbcdc9e1ac28153684fd498bbAffected
6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before dfc0337c6dceb6449403b33ecb141f4a1458a1e9Affected
6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before 2974f3b330ef25f5d34a4948d04290c2cd7802cfAffected
6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before 91f8f5342bee726ed5692583d58f69e7cc9ae60eAffected
6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before 02dc0db19d944b4a90941db505ecf1aaec714be4Affected
6fe6611ff275522a4e4c0359e2f46cdd07780d2f to before ff2f5ec5d009844ec28f171123f9e58750cef4bfAffected

LinuxLinux

4.4Affected
before 4.4Not affected
4.9.332 through 4.9.*Not affected
4.14.298 through 4.14.*Not affected
4.19.264 through 4.19.*Not affected
5.4.221 through 5.4.*Not affected
5.10.152 through 5.10.*Not 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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