CVE-2023-53654

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> octeontx2-af: Add validation before accessing cgx and lmac<br /> <br /> with the addition of new MAC blocks like CN10K RPM and CN10KB<br /> RPM_USX, LMACs are noncontiguous and CGX blocks are also<br /> noncontiguous. But during RVU driver initialization, the driver<br /> is assuming they are contiguous and trying to access<br /> cgx or lmac with their id which is resulting in kernel panic.<br /> <br /> This patch fixes the issue by adding proper checks.<br /> <br /> [ 23.219150] pc : cgx_lmac_read+0x38/0x70<br /> [ 23.219154] lr : rvu_program_channels+0x3f0/0x498<br /> [ 23.223852] sp : ffff000100d6fc80<br /> [ 23.227158] x29: ffff000100d6fc80 x28: ffff00010009f880 x27:<br /> 000000000000005a<br /> [ 23.234288] x26: ffff000102586768 x25: 0000000000002500 x24:<br /> fffffffffff0f000