CVE-2022-49515

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ASoC: cs35l41: Fix an out-of-bounds access in otp_packed_element_t<br /> <br /> The CS35L41_NUM_OTP_ELEM is 100, but only 99 entries are defined in<br /> the array otp_map_1/2[CS35L41_NUM_OTP_ELEM], this will trigger UBSAN<br /> to report a shift-out-of-bounds warning in the cs35l41_otp_unpack()<br /> since the last entry in the array will result in GENMASK(-1, 0).<br /> <br /> UBSAN reports this problem:<br /> UBSAN: shift-out-of-bounds in /home/hwang4/build/jammy/jammy/sound/soc/codecs/cs35l41-lib.c:836:8<br /> shift exponent 64 is too large for 64-bit type &amp;#39;long unsigned int&amp;#39;<br /> CPU: 10 PID: 595 Comm: systemd-udevd Not tainted 5.15.0-23-generic #23<br /> Hardware name: LENOVO \x02MFG_IN_GO/\x02MFG_IN_GO, BIOS N3GET19W (1.00 ) 03/11/2022<br /> Call Trace:<br /> <br /> show_stack+0x52/0x58<br /> dump_stack_lvl+0x4a/0x5f<br /> dump_stack+0x10/0x12<br /> ubsan_epilogue+0x9/0x45<br /> __ubsan_handle_shift_out_of_bounds.cold+0x61/0xef<br /> ? regmap_unlock_mutex+0xe/0x10<br /> cs35l41_otp_unpack.cold+0x1c6/0x2b2 [snd_soc_cs35l41_lib]<br /> cs35l41_hda_probe+0x24f/0x33a [snd_hda_scodec_cs35l41]<br /> cs35l41_hda_i2c_probe+0x65/0x90 [snd_hda_scodec_cs35l41_i2c]<br /> ? cs35l41_hda_i2c_remove+0x20/0x20 [snd_hda_scodec_cs35l41_i2c]<br /> i2c_device_probe+0x252/0x2b0