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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Dec 31, 2025 | Dec 31, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 30, 2025 |
| Ubuntu | — | Upgrade linux-bluefieldUpgrade linux-azureUpgrade linux-nvidia-tegra-igxUpgrade linux-azure-fdeUpgrade linux-lowlatency-hwe-5.15Upgrade linuxUpgrade linux-intel-iotg-5.15Upgrade linux-awsUpgrade linux-hwe-5.15Upgrade linux-gkeUpgrade linux-realtimeUpgrade linux-oracleUpgrade linux-ibm-5.15Upgrade linux-gkeopUpgrade linux-gcpUpgrade linux-azure-fde-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-nvidiaUpgrade linux-raspiUpgrade linux-gcp-5.15Upgrade linux-intel-iotgUpgrade linux-kvmUpgrade linux-intel-iot-realtimeUpgrade linux-oracle-5.15Upgrade linux-lowlatencyUpgrade linux-aws-5.15Upgrade linux-riscv-5.15Upgrade linux-azure-5.15Upgrade linux-ibmUpgrade linux-nvidia-tegra | Jan 6, 2026 | Jan 2, 2026 |
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