{"id":"CVE-2026-63838","state":"PUBLISHED","title":"ASoC: rsnd: Fix potential out-of-bounds access of component_dais[]","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: rsnd: Fix potential out-of-bounds access of component_dais[]\n\ncomponent_dais[RSND_MAX_COMPONENT] is initially zero-initialized\nand later populated in rsnd_dai_of_node(). However, the existing boundary check:\n  if (i >= RSND_MAX_COMPONENT)\n\ndoes not guarantee that the last valid element remains zero. As a result,\nthe loop can rely on component_dais[RSND_MAX_COMPONENT] being zero,\nwhich may lead to an out-of-bounds access.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.","publishedAt":"2026-07-19T14:04:34.454Z","updatedAt":"2026-07-19T14:04:34.454Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","status":"affected","lessThan":"9f1daac27ca28e98c8c0e4450de42bb68d547250","versionType":"git"},{"version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","status":"affected","lessThan":"15e7b2ac2455995a6af02b9d3da7a432837aaf72","versionType":"git"},{"version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","status":"affected","lessThan":"134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5","versionType":"git"},{"version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","status":"affected","lessThan":"a62b3e6e42359a79158c134e3cf5c74fe160c3f5","versionType":"git"},{"version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","status":"affected","lessThan":"f9e437cddf6cf9e603bdaefe148c1f4792aaf39c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/soc/renesas/rcar/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.141","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.91","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/soc/renesas/rcar/core.c"]}],"references":["https://git.kernel.org/stable/c/9f1daac27ca28e98c8c0e4450de42bb68d547250","https://git.kernel.org/stable/c/15e7b2ac2455995a6af02b9d3da7a432837aaf72","https://git.kernel.org/stable/c/134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5","https://git.kernel.org/stable/c/a62b3e6e42359a79158c134e3cf5c74fe160c3f5","https://git.kernel.org/stable/c/f9e437cddf6cf9e603bdaefe148c1f4792aaf39c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63838.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63838","state":"PUBLISHED","datePublished":"2026-07-19T14:04:34.454Z","dateUpdated":"2026-07-19T14:04:34.454Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.015Z"},"containers":{"cna":{"title":"ASoC: rsnd: Fix potential out-of-bounds access of component_dais[]","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: rsnd: Fix potential out-of-bounds access of component_dais[]\n\ncomponent_dais[RSND_MAX_COMPONENT] is initially zero-initialized\nand later populated in rsnd_dai_of_node(). However, the existing boundary check:\n  if (i >= RSND_MAX_COMPONENT)\n\ndoes not guarantee that the last valid element remains zero. As a result,\nthe loop can rely on component_dais[RSND_MAX_COMPONENT] being zero,\nwhich may lead to an out-of-bounds access.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","status":"affected","lessThan":"9f1daac27ca28e98c8c0e4450de42bb68d547250","versionType":"git"},{"version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","status":"affected","lessThan":"15e7b2ac2455995a6af02b9d3da7a432837aaf72","versionType":"git"},{"version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","status":"affected","lessThan":"134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5","versionType":"git"},{"version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","status":"affected","lessThan":"a62b3e6e42359a79158c134e3cf5c74fe160c3f5","versionType":"git"},{"version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","status":"affected","lessThan":"f9e437cddf6cf9e603bdaefe148c1f4792aaf39c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/soc/renesas/rcar/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.141","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.91","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/soc/renesas/rcar/core.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/9f1daac27ca28e98c8c0e4450de42bb68d547250"},{"url":"https://git.kernel.org/stable/c/15e7b2ac2455995a6af02b9d3da7a432837aaf72"},{"url":"https://git.kernel.org/stable/c/134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5"},{"url":"https://git.kernel.org/stable/c/a62b3e6e42359a79158c134e3cf5c74fe160c3f5"},{"url":"https://git.kernel.org/stable/c/f9e437cddf6cf9e603bdaefe148c1f4792aaf39c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-19T14:04:34.454Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.141"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.12.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}