CVE-2022-50566

mtd: Fix device name leak when register device failed in add_mtd_device()

State: Published
Severity: Not scored
Published: Oct 22, 2025
Updated: May 11, 2026
Reserved: Oct 22, 2025

Description

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

mtd: Fix device name leak when register device failed in add_mtd_device()

There is a kmemleak when register device failed: unreferenced object 0xffff888101aab550 (size 8): comm "insmod", pid 3922, jiffies 4295277753 (age 925.408s) hex dump (first 8 bytes): 6d 74 64 30 00 88 ff ff mtd0.... backtrace: [<00000000bde26724>] __kmalloc_node_track_caller+0x4e/0x150 [<000000003c32b416>] kvasprintf+0xb0/0x130 [<000000001f7a8f15>] kobject_set_name_vargs+0x2f/0xb0 [<000000006e781163>] dev_set_name+0xab/0xe0 [<00000000e30d0c78>] add_mtd_device+0x4bb/0x700 [<00000000f3d34de7>] mtd_device_parse_register+0x2ac/0x3f0 [<00000000c0d88488>] 0xffffffffa0238457 [<00000000b40d0922>] 0xffffffffa02a008f [<0000000023d17b9d>] do_one_initcall+0x87/0x2a0 [<00000000770f6ca6>] do_init_module+0xdf/0x320 [<000000007b6768fe>] load_module+0x2f98/0x3330 [<00000000346bed5a>] __do_sys_finit_module+0x113/0x1b0 [<00000000674c2290>] do_syscall_64+0x35/0x80 [<000000004c6a8d97>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

If register device failed, should call put_device() to give up the reference.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before a75f45afa932bfb24a2603ebcea5efd2e7cdcfd6Affected 1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before 2302e2dc42b1f84f951c725ce742fc21c5a1e151Affected 1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before db07fe76df01f40cb897d6e9066b84e46957beb3Affected 1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before fa0d32ab8407d7481450c664fd0de64f2dae9489Affected 1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before 330bc5533e8a8ed69cb951d5a8edce9bddb9db21Affected 1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before 71212d73184845c944ef1b43f092e643e5bde003Affected 1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before 1b172fb05d6315ecec082fd7544a3390e96f0d7eAffected 1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before bcabe1dc2a344adbb3382930a23e273ba9382277Affected 1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before 895d68a39481a75c680aa421546931fb11942fa6Affected
LinuxLinux	2.6.30Affected before 2.6.30Not affected 4.9.337 through 4.9.Not affected 4.14.303 through 4.14.Not affected 4.19.270 through 4.19.Not affected 5.4.229 through 5.4.Not affected 5.10.163 through 5.10.Not affected 5.15.86 through 5.15.Not affected 6.0.16 through 6.0.Not affected 6.1.2 through 6.1.Not affected 6.2 and laterNot affected

Product

Versions

LinuxLinux

1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before a75f45afa932bfb24a2603ebcea5efd2e7cdcfd6Affected
1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before 2302e2dc42b1f84f951c725ce742fc21c5a1e151Affected
1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before db07fe76df01f40cb897d6e9066b84e46957beb3Affected
1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before fa0d32ab8407d7481450c664fd0de64f2dae9489Affected
1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before 330bc5533e8a8ed69cb951d5a8edce9bddb9db21Affected
1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before 71212d73184845c944ef1b43f092e643e5bde003Affected
1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before 1b172fb05d6315ecec082fd7544a3390e96f0d7eAffected
1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before bcabe1dc2a344adbb3382930a23e273ba9382277Affected
1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 to before 895d68a39481a75c680aa421546931fb11942fa6Affected

LinuxLinux

2.6.30Affected
before 2.6.30Not affected
4.9.337 through 4.9.*Not affected
4.14.303 through 4.14.*Not affected
4.19.270 through 4.19.*Not affected
5.4.229 through 5.4.*Not affected
5.10.163 through 5.10.*Not affected
5.15.86 through 5.15.*Not affected
6.0.16 through 6.0.*Not affected
6.1.2 through 6.1.*Not affected
6.2 and laterNot affected

References

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