{"id":"CVE-2023-54244","state":"PUBLISHED","title":"ACPI: EC: Fix oops when removing custom query handlers","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: EC: Fix oops when removing custom query handlers\n\nWhen removing custom query handlers, the handler might still\nbe used inside the EC query workqueue, causing a kernel oops\nif the module holding the callback function was already unloaded.\n\nFix this by flushing the EC query workqueue when removing\ncustom query handlers.\n\nTested on a Acer Travelmate 4002WLMi","publishedAt":"2025-12-30T12:15:43.397Z","updatedAt":"2026-05-23T15:34:41.468Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"130e3eac51912f2c866e7d035992ede25f8feac0","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"0d528a7c421b1f1772fc1d29370b3b5fc0f42b19","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"ccae2233e9935a038a35fe8cfd703df905f700e7","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"066b90bca755f0b876e7b027b75d1796861d6db0","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"f4a573eed6377d356f835a4b00099d5dacee0da0","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"86a159fd5bdb01ec34b160cfda1a313b616d9302","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"fd2c99e81ae0dbdd62a154ef9c77fc01715cc020","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"e5b492c6bb900fcf9722e05f4a10924410e170c1","versionType":"git"},{"version":"1ff7b99e4983d9e93d25e98ba1ce303ad4e4909e","status":"affected","versionType":"git"},{"version":"2.6.32.6","status":"affected","lessThan":"2.6.33","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/acpi/ec.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.33","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.33","versionType":"semver"},{"version":"4.14.316","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.284","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.244","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.181","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.113","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.30","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.3.4","status":"unaffected","lessThanOrEqual":"6.3.*","versionType":"semver"},{"version":"6.4","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/acpi/ec.c"]}],"references":["https://git.kernel.org/stable/c/130e3eac51912f2c866e7d035992ede25f8feac0","https://git.kernel.org/stable/c/0d528a7c421b1f1772fc1d29370b3b5fc0f42b19","https://git.kernel.org/stable/c/ccae2233e9935a038a35fe8cfd703df905f700e7","https://git.kernel.org/stable/c/066b90bca755f0b876e7b027b75d1796861d6db0","https://git.kernel.org/stable/c/f4a573eed6377d356f835a4b00099d5dacee0da0","https://git.kernel.org/stable/c/86a159fd5bdb01ec34b160cfda1a313b616d9302","https://git.kernel.org/stable/c/fd2c99e81ae0dbdd62a154ef9c77fc01715cc020","https://git.kernel.org/stable/c/e5b492c6bb900fcf9722e05f4a10924410e170c1"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:42.242Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/54xxx/CVE-2023-54244.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-54244","state":"PUBLISHED","datePublished":"2025-12-30T12:15:43.397Z","dateUpdated":"2026-05-23T15:34:41.468Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-30T12:06:44.512Z"},"containers":{"cna":{"title":"ACPI: EC: Fix oops when removing custom query handlers","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: EC: Fix oops when removing custom query handlers\n\nWhen removing custom query handlers, the handler might still\nbe used inside the EC query workqueue, causing a kernel oops\nif the module holding the callback function was already unloaded.\n\nFix this by flushing the EC query workqueue when removing\ncustom query handlers.\n\nTested on a Acer Travelmate 4002WLMi"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"130e3eac51912f2c866e7d035992ede25f8feac0","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"0d528a7c421b1f1772fc1d29370b3b5fc0f42b19","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"ccae2233e9935a038a35fe8cfd703df905f700e7","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"066b90bca755f0b876e7b027b75d1796861d6db0","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"f4a573eed6377d356f835a4b00099d5dacee0da0","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"86a159fd5bdb01ec34b160cfda1a313b616d9302","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"fd2c99e81ae0dbdd62a154ef9c77fc01715cc020","versionType":"git"},{"version":"a62e8f1978f49e52f87a711ff6711b323d4b12ff","status":"affected","lessThan":"e5b492c6bb900fcf9722e05f4a10924410e170c1","versionType":"git"},{"version":"1ff7b99e4983d9e93d25e98ba1ce303ad4e4909e","status":"affected","versionType":"git"},{"version":"2.6.32.6","status":"affected","lessThan":"2.6.33","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/acpi/ec.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.33","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.33","versionType":"semver"},{"version":"4.14.316","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.284","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.244","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.181","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.113","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.30","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.3.4","status":"unaffected","lessThanOrEqual":"6.3.*","versionType":"semver"},{"version":"6.4","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/acpi/ec.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/130e3eac51912f2c866e7d035992ede25f8feac0"},{"url":"https://git.kernel.org/stable/c/0d528a7c421b1f1772fc1d29370b3b5fc0f42b19"},{"url":"https://git.kernel.org/stable/c/ccae2233e9935a038a35fe8cfd703df905f700e7"},{"url":"https://git.kernel.org/stable/c/066b90bca755f0b876e7b027b75d1796861d6db0"},{"url":"https://git.kernel.org/stable/c/f4a573eed6377d356f835a4b00099d5dacee0da0"},{"url":"https://git.kernel.org/stable/c/86a159fd5bdb01ec34b160cfda1a313b616d9302"},{"url":"https://git.kernel.org/stable/c/fd2c99e81ae0dbdd62a154ef9c77fc01715cc020"},{"url":"https://git.kernel.org/stable/c/e5b492c6bb900fcf9722e05f4a10924410e170c1"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:34:41.468Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"4.14.316"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"4.19.284"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"5.4.244"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"5.10.181"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"5.15.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"6.1.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"6.3.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"6.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.32.6"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}