| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49515: ASoC: cs35l41: Fix an out-of-bounds access in otp_packed_element_t |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ASoC: cs35l41: Fix an out-of-bounds access in otp_packed_element_t |
| |
| The CS35L41_NUM_OTP_ELEM is 100, but only 99 entries are defined in |
| the array otp_map_1/2[CS35L41_NUM_OTP_ELEM], this will trigger UBSAN |
| to report a shift-out-of-bounds warning in the cs35l41_otp_unpack() |
| since the last entry in the array will result in GENMASK(-1, 0). |
| |
| UBSAN reports this problem: |
| UBSAN: shift-out-of-bounds in /home/hwang4/build/jammy/jammy/sound/soc/codecs/cs35l41-lib.c:836:8 |
| shift exponent 64 is too large for 64-bit type 'long unsigned int' |
| CPU: 10 PID: 595 Comm: systemd-udevd Not tainted 5.15.0-23-generic #23 |
| Hardware name: LENOVO \x02MFG_IN_GO/\x02MFG_IN_GO, BIOS N3GET19W (1.00 ) 03/11/2022 |
| Call Trace: |
| <TASK> |
| show_stack+0x52/0x58 |
| dump_stack_lvl+0x4a/0x5f |
| dump_stack+0x10/0x12 |
| ubsan_epilogue+0x9/0x45 |
| __ubsan_handle_shift_out_of_bounds.cold+0x61/0xef |
| ? regmap_unlock_mutex+0xe/0x10 |
| cs35l41_otp_unpack.cold+0x1c6/0x2b2 [snd_soc_cs35l41_lib] |
| cs35l41_hda_probe+0x24f/0x33a [snd_hda_scodec_cs35l41] |
| cs35l41_hda_i2c_probe+0x65/0x90 [snd_hda_scodec_cs35l41_i2c] |
| ? cs35l41_hda_i2c_remove+0x20/0x20 [snd_hda_scodec_cs35l41_i2c] |
| i2c_device_probe+0x252/0x2b0 |
| |
| The Linux kernel CVE team has assigned CVE-2022-49515 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.16 with commit 6450ef55905688602175fae4ed1bfbfef6a14dde and fixed in 5.17.14 with commit dbc35268e14d5d89c7a9db72009ad4dcd9ede646 |
| Issue introduced in 5.16 with commit 6450ef55905688602175fae4ed1bfbfef6a14dde and fixed in 5.18.3 with commit a59b9958416096dd21dc4f62b0c5be525d459ca8 |
| Issue introduced in 5.16 with commit 6450ef55905688602175fae4ed1bfbfef6a14dde and fixed in 5.19 with commit 9f342904216f378e88008bb0ce1ae200a4b99fe8 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2022-49515 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| include/sound/cs35l41.h |
| sound/soc/codecs/cs35l41-lib.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/dbc35268e14d5d89c7a9db72009ad4dcd9ede646 |
| https://git.kernel.org/stable/c/a59b9958416096dd21dc4f62b0c5be525d459ca8 |
| https://git.kernel.org/stable/c/9f342904216f378e88008bb0ce1ae200a4b99fe8 |
