mtd: Fix device name leak when register device failed in add_mtd_device()
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 4 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 2.6.30 and later | 4.9.337, 4.14.303, 4.19.270, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.30 and later Fixed in 4.9.337, 4.14.303, 4.19.270, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.9.337, 4.14.303, 4.19.270, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Enterprise Linux 10
Timeline
- 2026-10-02 Threatist record created from CVE-2022-50566
- 2026-10-03 Alias added: GHSA-vc9x-p9c7-wp9p
References
Other 9
- https://git.kernel.org/stable/c/a75f45afa932bfb24a2603ebcea5efd2e7cdcfd6
- https://git.kernel.org/stable/c/2302e2dc42b1f84f951c725ce742fc21c5a1e151
- https://git.kernel.org/stable/c/db07fe76df01f40cb897d6e9066b84e46957beb3
- https://git.kernel.org/stable/c/fa0d32ab8407d7481450c664fd0de64f2dae9489
- https://git.kernel.org/stable/c/330bc5533e8a8ed69cb951d5a8edce9bddb9db21
- https://git.kernel.org/stable/c/71212d73184845c944ef1b43f092e643e5bde003
- https://git.kernel.org/stable/c/1b172fb05d6315ecec082fd7544a3390e96f0d7e
- https://git.kernel.org/stable/c/bcabe1dc2a344adbb3382930a23e273ba9382277
- https://git.kernel.org/stable/c/895d68a39481a75c680aa421546931fb11942fa6
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Sources
- CVE-2022-50566 · CVE Program
- CVE-2022-50566 · NVD
- FIRST EPSS
- GHSA-vc9x-p9c7-wp9p · GitHub Advisory Database · CC BY 4.0
- CVE-2022-50566 · Red Hat security data · CC BY 4.0
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