{"id":"CVE-2021-47499","state":"PUBLISHED","title":"iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: accel: kxcjk-1013: Fix possible memory leak in probe and remove\n\nWhen ACPI type is ACPI_SMO8500, the data->dready_trig will not be set, the\nmemory allocated by iio_triggered_buffer_setup() will not be freed, and cause\nmemory leak as follows:\n\nunreferenced object 0xffff888009551400 (size 512):\n  comm \"i2c-SMO8500-125\", pid 911, jiffies 4294911787 (age 83.852s)\n  hex dump (first 32 bytes):\n    02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 20 e2 e5 c0 ff ff ff ff  ........ .......\n  backtrace:\n    [<0000000041ce75ee>] kmem_cache_alloc_trace+0x16d/0x360\n    [<000000000aeb17b0>] iio_kfifo_allocate+0x41/0x130 [kfifo_buf]\n    [<000000004b40c1f5>] iio_triggered_buffer_setup_ext+0x2c/0x210 [industrialio_triggered_buffer]\n    [<000000004375b15f>] kxcjk1013_probe+0x10c3/0x1d81 [kxcjk_1013]\n\nFix it by remove data->dready_trig condition in probe and remove.","publishedAt":"2024-05-24T15:01:42.684Z","updatedAt":"2026-05-11T13:55:49.902Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"8c1d43f3a3fc7184c42d7398bdf59a2a2903e4fc","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"60a55b9d91ba99eb8cf015bc46dc2de05e168a15","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"3899700ddacbf7aaafadf44464fff3ff0d4e3307","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"a3730f74159ad00a28960c0efe2a931fe6fe6b45","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"8c163a14277115ca962103910ab4cce55e862ffb","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"ee86d0bad80bdcd11a87e188a596727f41b62320","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"14508fe13b1c578b3d2ba574f1d48b351975860c","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"70c9774e180d151abaab358108e3510a8e615215","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/accel/kxcjk-1013.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.2","versionType":"semver"},{"version":"4.4.295","status":"unaffected","lessThanOrEqual":"4.4.*","versionType":"semver"},{"version":"4.9.293","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.258","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.221","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.165","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.85","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.8","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/accel/kxcjk-1013.c"]}],"references":["https://git.kernel.org/stable/c/8c1d43f3a3fc7184c42d7398bdf59a2a2903e4fc","https://git.kernel.org/stable/c/60a55b9d91ba99eb8cf015bc46dc2de05e168a15","https://git.kernel.org/stable/c/3899700ddacbf7aaafadf44464fff3ff0d4e3307","https://git.kernel.org/stable/c/a3730f74159ad00a28960c0efe2a931fe6fe6b45","https://git.kernel.org/stable/c/8c163a14277115ca962103910ab4cce55e862ffb","https://git.kernel.org/stable/c/ee86d0bad80bdcd11a87e188a596727f41b62320","https://git.kernel.org/stable/c/14508fe13b1c578b3d2ba574f1d48b351975860c","https://git.kernel.org/stable/c/70c9774e180d151abaab358108e3510a8e615215"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47499.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47499","state":"PUBLISHED","datePublished":"2024-05-24T15:01:42.684Z","dateUpdated":"2026-05-11T13:55:49.902Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-05-22T06:20:56.204Z"},"containers":{"cna":{"title":"iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: accel: kxcjk-1013: Fix possible memory leak in probe and remove\n\nWhen ACPI type is ACPI_SMO8500, the data->dready_trig will not be set, the\nmemory allocated by iio_triggered_buffer_setup() will not be freed, and cause\nmemory leak as follows:\n\nunreferenced object 0xffff888009551400 (size 512):\n  comm \"i2c-SMO8500-125\", pid 911, jiffies 4294911787 (age 83.852s)\n  hex dump (first 32 bytes):\n    02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 20 e2 e5 c0 ff ff ff ff  ........ .......\n  backtrace:\n    [<0000000041ce75ee>] kmem_cache_alloc_trace+0x16d/0x360\n    [<000000000aeb17b0>] iio_kfifo_allocate+0x41/0x130 [kfifo_buf]\n    [<000000004b40c1f5>] iio_triggered_buffer_setup_ext+0x2c/0x210 [industrialio_triggered_buffer]\n    [<000000004375b15f>] kxcjk1013_probe+0x10c3/0x1d81 [kxcjk_1013]\n\nFix it by remove data->dready_trig condition in probe and remove."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"8c1d43f3a3fc7184c42d7398bdf59a2a2903e4fc","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"60a55b9d91ba99eb8cf015bc46dc2de05e168a15","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"3899700ddacbf7aaafadf44464fff3ff0d4e3307","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"a3730f74159ad00a28960c0efe2a931fe6fe6b45","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"8c163a14277115ca962103910ab4cce55e862ffb","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"ee86d0bad80bdcd11a87e188a596727f41b62320","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"14508fe13b1c578b3d2ba574f1d48b351975860c","versionType":"git"},{"version":"a25691c1f9674090fb66586cf4c5d60d3efdf339","status":"affected","lessThan":"70c9774e180d151abaab358108e3510a8e615215","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/accel/kxcjk-1013.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.2","versionType":"semver"},{"version":"4.4.295","status":"unaffected","lessThanOrEqual":"4.4.*","versionType":"semver"},{"version":"4.9.293","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.258","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.221","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.165","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.85","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.8","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/accel/kxcjk-1013.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8c1d43f3a3fc7184c42d7398bdf59a2a2903e4fc"},{"url":"https://git.kernel.org/stable/c/60a55b9d91ba99eb8cf015bc46dc2de05e168a15"},{"url":"https://git.kernel.org/stable/c/3899700ddacbf7aaafadf44464fff3ff0d4e3307"},{"url":"https://git.kernel.org/stable/c/a3730f74159ad00a28960c0efe2a931fe6fe6b45"},{"url":"https://git.kernel.org/stable/c/8c163a14277115ca962103910ab4cce55e862ffb"},{"url":"https://git.kernel.org/stable/c/ee86d0bad80bdcd11a87e188a596727f41b62320"},{"url":"https://git.kernel.org/stable/c/14508fe13b1c578b3d2ba574f1d48b351975860c"},{"url":"https://git.kernel.org/stable/c/70c9774e180d151abaab358108e3510a8e615215"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T13:55:49.902Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.4.295"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.9.293"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.14.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.19.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.4.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.10.85"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.15.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.16"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE 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