CVE-2024-50165

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

bpf: Preserve param->string when parsing mount options

In bpfparseparam(), keep the value of param->string intact so it can be freed later. Otherwise, the kmalloc area pointed to by param->string will be leaked as shown below:

unreferenced object 0xffff888118c46d20 (size 8): comm "newname", pid 12109, jiffies 4295580214 hex dump (first 8 bytes): 61 6e 79 00 38 c9 5c 7e any.8.\~ backtrace (crc e1b7f876): [<00000000c6848ac7>] kmemleakalloc+0x4b/0x80 [<00000000de9f7d00>] _kmallocnodetrackcallernoprof+0x36e/0x4a0 [<000000003e29b886>] memdupuser+0x32/0xa0 [<0000000007248326>] strndupuser+0x46/0x60 [<0000000035b3dd29>] _x64sysfsconfig+0x368/0x3d0 [<0000000018657927>] x64syscall+0xff/0x9f0 [<00000000c0cabc95>] dosyscall64+0x3b/0xc0 [<000000002f331597>] entrySYSCALL64afterhwframe+0x4b/0x53