CVE-2022-50566

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

N/A

Published: October 22, 2025 at 01:23 PM UTC

Updated: June 17, 2026 at 05:23 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.30 ≤ v < 4.14.3032.6.30 ≤ v < 4.19.2702.6.30 ≤ v < 4.9.3372.6.30 ≤ v < 5.10.1632.6.30 ≤ v < 5.15.862.6.30 ≤ v < 5.4.2292.6.30 ≤ v < 6.0.162.6.30 ≤ v < 6.1.22.6.30 ≤ v < 6.21f24b5a8ecbb2a3c7080f418974d40e3ffedb2212.6.30

Vendor states this is fixed in 1b172fb05d6315ecec082fd7544a3390e96f0d7e (fixed)

Vendor states this is fixed in 2302e2dc42b1f84f951c725ce742fc21c5a1e151 (fixed)

Vendor states this is fixed in 330bc5533e8a8ed69cb951d5a8edce9bddb9db21 (fixed)

Vendor states this is fixed in 71212d73184845c944ef1b43f092e643e5bde003 (fixed)

Vendor states this is fixed in 895d68a39481a75c680aa421546931fb11942fa6 (fixed)

Vendor states this is fixed in a75f45afa932bfb24a2603ebcea5efd2e7cdcfd6 (fixed)

Vendor states this is fixed in bcabe1dc2a344adbb3382930a23e273ba9382277 (fixed)

Vendor states this is fixed in db07fe76df01f40cb897d6e9066b84e46957beb3 (fixed)

Vendor states this is fixed in fa0d32ab8407d7481450c664fd0de64f2dae9489 (fixed)

Vendor states this is fixed in 2.6.30 (unaffected)

Vendor states this is fixed in 4.14.303 (unaffected)

Vendor states this is fixed in 4.19.270 (unaffected)