{"id":"CVE-2023-53866","title":"ASoC: soc-compress: Reposition and add pcm_mutex","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: soc-compress: Reposition and add pcm_mutex\n\nIf panic_on_warn is set and compress stream(DPCM) is started,\nthen kernel panic occurred because card->pcm_mutex isn't…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= b7898396f4bbe160f546d0c5e9fa17cca9a7d153 < 9a9942cbdb7c3f41452f7bc4a9ff9f0b45eb3651","Linux >= b7898396f4bbe160f546d0c5e9fa17cca9a7d153 < 37a3eb6054d17676ce2a0bb5dd1fbf7733ecfa7d","Linux >= b7898396f4bbe160f546d0c5e9fa17cca9a7d153 < aa9ff6a4955fdba02b54fbc4386db876603703b7","Linux 5.17"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:37:41.587294Z"},"published":"2025-12-09","updated":"2026-10-15","sourceUpdated":"2026-10-15T21:41:37.435Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53866","references":[{"url":"https://git.kernel.org/stable/c/9a9942cbdb7c3f41452f7bc4a9ff9f0b45eb3651"},{"url":"https://git.kernel.org/stable/c/37a3eb6054d17676ce2a0bb5dd1fbf7733ecfa7d"},{"url":"https://git.kernel.org/stable/c/aa9ff6a4955fdba02b54fbc4386db876603703b7"}],"tags":["cve.org"],"epss":0.0018,"epssPercentile":0.07107,"ingestedAt":"2026-10-15T22:48:25.424Z","slug":"CVE-2023-53866","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nASoC: soc-compress: Reposition and add pcm_mutex\n\nIf panic_on_warn is set and compress stream(DPCM) is started,\nthen kernel panic occurred because card->pcm_mutex isn't held appropriately.\nIn the following functions, warning were issued at this line\n\"snd_soc_dpcm_mutex_assert_held\".\n\nstatic int dpcm_be_connect(struct snd_soc_pcm_runtime *fe,\n\t\tstruct snd_soc_pcm_runtime *be, int stream)\n{\n\t...\n\tsnd_soc_dpcm_mutex_assert_held(fe);\n\t...\n}\n\nvoid dpcm_be_disconnect(struct snd_soc_pcm_runtime *fe, int stream)\n{\n\t...\n\tsnd_soc_dpcm_mutex_assert_held(fe);\n\t...\n}\n\nvoid snd_soc_runtime_action(struct snd_soc_pcm_runtime *rtd,\n\t\t\t    int stream, int action)\n{\n\t...\n\tsnd_soc_dpcm_mutex_assert_held(rtd);\n\t...\n}\n\nint dpcm_dapm_stream_event(struct snd_soc_pcm_runtime *fe, int dir,\n\tint event)\n{\n\t...\n\tsnd_soc_dpcm_mutex_assert_held(fe);\n\t...\n}\n\nThese functions are called by soc_compr_set_params_fe, soc_compr_open_fe\nand soc_compr_free_fe\nwithout pcm_mutex locking. And this is call stack.\n\n[  414.527841][ T2179] pc : dpcm_process_paths+0x5a4/0x750\n[  414.527848][ T2179] lr : dpcm_process_paths+0x37c/0x750\n[  414.527945][ T2179] Call trace:\n[  414.527949][ T2179]  dpcm_process_paths+0x5a4/0x750\n[  414.527955][ T2179]  soc_compr_open_fe+0xb0/0x2cc\n[  414.527972][ T2179]  snd_compr_open+0x180/0x248\n[  414.527981][ T2179]  snd_open+0x15c/0x194\n[  414.528003][ T2179]  chrdev_open+0x1b0/0x220\n[  414.528023][ T2179]  do_dentry_open+0x30c/0x594\n[  414.528045][ T2179]  vfs_open+0x34/0x44\n[  414.528053][ T2179]  path_openat+0x914/0xb08\n[  414.528062][ T2179]  do_filp_open+0xc0/0x170\n[  414.528068][ T2179]  do_sys_openat2+0x94/0x18c\n[  414.528076][ T2179]  __arm64_sys_openat+0x78/0xa4\n[  414.528084][ T2179]  invoke_syscall+0x48/0x10c\n[  414.528094][ T2179]  el0_svc_common+0xbc/0x104\n[  414.528099][ T2179]  do_el0_svc+0x34/0xd8\n[  414.528103][ T2179]  el0_svc+0x34/0xc4\n[  414.528125][ T2179]  el0t_64_sync_handler+0x8c/0xfc\n[  414.528133][ T2179]  el0t_64_sync+0x1a0/0x1a4\n[  414.528142][ T2179] Kernel panic - not syncing: panic_on_warn set ...\n\nSo, I reposition and add pcm_mutex to resolve lockdep error.\n\n## Affected\n\n- `Linux >= b7898396f4bbe160f546d0c5e9fa17cca9a7d153 < 9a9942cbdb7c3f41452f7bc4a9ff9f0b45eb3651`\n- `Linux >= b7898396f4bbe160f546d0c5e9fa17cca9a7d153 < 37a3eb6054d17676ce2a0bb5dd1fbf7733ecfa7d`\n- `Linux >= b7898396f4bbe160f546d0c5e9fa17cca9a7d153 < aa9ff6a4955fdba02b54fbc4386db876603703b7`\n- `Linux 5.17`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}