CVEvulnerability
CVE-2023-54245
- Status
- Deferred
- Published
- 2025-12-30
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
ASoC: codecs: tx-macro: Fix for KASAN: slab-out-of-bounds
When we run syzkaller we get below Out of Bound.
"KASAN: slab-out-of-bounds Read in regcache_flat_read"
Below is the backtrace of the issue:
dump_backtrace+0x0/0x4c8
show_stack+0x34/0x44
dump_stack_lvl+0xd8/0x118
print_address_description+0x30/0x2d8
kasan_report+0x158/0x198
__asan_report_load4_noabort+0x44/0x50
regcache_flat_read+0x10c/0x110
regcache_read+0xf4/0x180
_regmap_read+0xc4/0x278
_regmap_update_bits+0x130/0x290
regmap_update_bits_base+0xc0/0x15c
snd_soc_component_update_bits+0xa8/0x22c
snd_soc_component_write_field+0x68/0xd4
tx_macro_digital_mute+0xec/0x140
Actually There is no need to have decimator with 32 bits.
By limiting the variable with short type u8 issue is resolved.
References
- https://git.kernel.org/stable/c/57f9a9a232bde7abfe49c3072b29a255da9ba891 git.kernel.org
- https://git.kernel.org/stable/c/b0cd740a31412340fead50e69e4fe9bc3781c754 git.kernel.org
- https://git.kernel.org/stable/c/da35a4e6eee5d73886312e85322a6e97df901987 git.kernel.org
- https://git.kernel.org/stable/c/e5e7e398f6bb7918dab0612eb6991f7bae95520d git.kernel.org