CVE-2021-46924

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-46924
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-46924.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-46924
Downstream
Related
Published
2024-02-27T10:15:07Z
Modified
2025-08-09T20:01:28Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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

NFC: st21nfca: Fix memory leak in device probe and remove

'phy->pending_skb' is alloced when device probe, but forgot to free in the error handling path and remove path, this cause memory leak as follows:

unreferenced object 0xffff88800bc06800 (size 512): comm "8", pid 11775, jiffies 4295159829 (age 9.032s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000d66c09ce>] _kmallocnodetrackcaller+0x1ed/0x450 [<00000000c93382b3>] kmallocreserve+0x37/0xd0 [<000000005fea522c>] _allocskb+0x124/0x380 [<0000000019f29f9a>] st21nfcahcii2cprobe+0x170/0x8f2

Fix it by freeing 'pending_skb' in error and remove.

References

Affected packages