UBUNTU-CVE-2021-46924
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>] __kmalloc_node_track_caller+0x1ed/0x450 [<00000000c93382b3>] kmalloc_reserve+0x37/0xd0 [<000000005fea522c>] __alloc_skb+0x124/0x380 [<0000000019f29f9a>] st21nfca_hci_i2c_probe+0x170/0x8f2 Fix it by freeing 'pending_skb' in error and remove.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
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26 explicit affected versions
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34 explicit affected versions
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34 explicit affected versions
10 explicit affected versions
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31 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
37 explicit affected versions
38 explicit affected versions
9 explicit affected versions
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142 explicit affected versions
34 explicit affected versions
7 explicit affected versions
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65 explicit affected versions
4 explicit affected versions
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34 explicit affected versions
43 explicit affected versions
1 explicit affected versions
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105 explicit affected versions
10 explicit affected versions
8 explicit affected versions
14 explicit affected versions
35 explicit affected versions
4 explicit affected versions
23 explicit affected versions
1 explicit affected versions
12 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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>] __kmalloc_node_track_caller+0x1ed/0x450 [<00000000c93382b3>] kmalloc_reserve+0x37/0xd0 [<000000005fea522c>] __alloc_skb+0x124/0x380 [<0000000019f29f9a>] st21nfca_hci_i2c_probe+0x170/0x8f2 Fix it by freeing 'pending_skb' in error and remove.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/1b9dadba502234eea7244879b8d5d126bfaf9f0c
- https://git.kernel.org/stable/c/1b9dadba502234eea7244879b8d5d126bfaf9f0c
- https://git.kernel.org/stable/c/1cd4063dbc91cf7965d73a6a3855e2028cd4613b
- https://git.kernel.org/stable/c/238920381b8925d070d32d73cd9ce52ab29896fe
- https://git.kernel.org/stable/c/38c3e320e7ff46f2dc67bc5045333e63d9f8918d
- https://git.kernel.org/stable/c/a1e0080a35a16ce3808f7040fe0c3a8fdb052349
- https://git.kernel.org/stable/c/e553265ea56482da5700f56319fda9ff53e7dcb4
- https://ubuntu.com/security/CVE-2021-46924
- https://ubuntu.com/security/notices/USN-6976-1
- https://www.cve.org/CVERecord?id=CVE-2021-46924