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…
Does this matter?
Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.23% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1b9dadba502234eea7244879b8d5d126bfaf9f0cPatch
- https://git.kernel.org/stable/c/1cd4063dbc91cf7965d73a6a3855e2028cd4613bPatch
- https://git.kernel.org/stable/c/238920381b8925d070d32d73cd9ce52ab29896fePatch
- https://git.kernel.org/stable/c/38c3e320e7ff46f2dc67bc5045333e63d9f8918dPatch
- https://git.kernel.org/stable/c/a1e0080a35a16ce3808f7040fe0c3a8fdb052349Patch
- https://git.kernel.org/stable/c/e553265ea56482da5700f56319fda9ff53e7dcb4Patch
- https://git.kernel.org/stable/c/1b9dadba502234eea7244879b8d5d126bfaf9f0cPatch
- https://git.kernel.org/stable/c/1cd4063dbc91cf7965d73a6a3855e2028cd4613bPatch
- https://git.kernel.org/stable/c/238920381b8925d070d32d73cd9ce52ab29896fePatch
- https://git.kernel.org/stable/c/38c3e320e7ff46f2dc67bc5045333e63d9f8918dPatch
- https://git.kernel.org/stable/c/a1e0080a35a16ce3808f7040fe0c3a8fdb052349Patch
- https://git.kernel.org/stable/c/e553265ea56482da5700f56319fda9ff53e7dcb4Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.