CVE-2026-93071

Summary

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

media: bcm2835-unicam: Fix asc leaked in error/remove path

v4l2_async_nf_add_fwnode_remote() allocates the asc, which is freed when v4l2_async_nf_cleanup() is called.

Call v4l2_async_nf_cleanup() properly in the driver paths.

Discovered with kmemleak after rmmod:

unreferenced object 0xffff000084526b80 (size 64): comm "modprobe", pid 185, jiffies 4295013512 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 e8 0d ff bf 00 00 ff ff ……………. 40 83 bc 84 00 00 ff ff 60 83 bc 84 00 00 ff ff @…….`……. backtrace (crc ac584083): [<00000000ffb081a7>] kmemleak_alloc+0x38/0x44 [<00000000d2fd9301>] __kmalloc+0x1b0/0x250 [<000000004dd5354d>] __v4l2_async_nf_add_fwnode+0x28/0x9c [<0000000067587657>] __v4l2_async_nf_add_fwnode_remote+0x3c/0x64

Affected Software

VendorProductVersion RangeStatus
LinuxLinux392cd78d495f36c201eb5cc425b01017d493e094 < 5479372db364c80bb6bd59f640f5c31de3984babaffected
LinuxLinux392cd78d495f36c201eb5cc425b01017d493e094 < 2c29cd408ef86e695acb2a5d4e00fa2f5695368daffected
LinuxLinux392cd78d495f36c201eb5cc425b01017d493e094 < de9be39cefda1ecd762e6a913665c01f7bb18100affected
LinuxLinux392cd78d495f36c201eb5cc425b01017d493e094 < 253c9659e25131b0169f718e7d094ac1aa0d9279affected
LinuxLinux6.10affected
LinuxLinux0 < 6.10unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References