{"id":"CVE-2024-26894","revision":"a67eeef9cff94a0783c44f065cc37b24","records":[{"revision":"a67eeef9cff94a0783c44f065cc37b24","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-26894","aliases":[],"title":"ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: processor_idle: Fix memory leak in acpi_processor_power_exit()\n\nAfter unregistering the CPU idle device, the memory associated with\nit is not freed, leading to a memory leak:\n\nunreferenced object 0xffff896282f6c000 (size 1024):\n  comm \"swapper/0\", pid 1, jiffies 4294893170\n  hex dump (first 32 bytes):\n    00 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace (crc 8836a742):\n    [<ffffffff993495ed>] kmalloc_trace+0x29d/0x340\n    [<ffffffff9972f3b3>] acpi_processor_power_init+0xf3/0x1c0\n    [<ffffffff9972d263>] __acpi_processor_start+0xd3/0xf0\n    [<ffffffff9972d2bc>] acpi_processor_start+0x2c/0x50\n    [<ffffffff99805872>] really_probe+0xe2/0x480\n    [<ffffffff99805c98>] __driver_probe_device+0x78/0x160\n    [<ffffffff99805daf>] driver_probe_device+0x1f/0x90\n    [<ffffffff9980601e>] __driver_attach+0xce/0x1c0\n    [<ffffffff99803170>] bus_for_each_dev+0x70/0xc0\n    [<ffffffff99804822>] bus_add_driver+0x112/0x210\n    [<ffffffff99807245>] driver_register+0x55/0x100\n    [<ffffffff9aee4acb>] acpi_processor_driver_init+0x3b/0xc0\n    [<ffffffff990012d1>] do_one_initcall+0x41/0x300\n    [<ffffffff9ae7c4b0>] kernel_init_freeable+0x320/0x470\n    [<ffffffff99b231f6>] kernel_init+0x16/0x1b0\n    [<ffffffff99042e6d>] ret_from_fork+0x2d/0x50\n\nFix this by freeing the CPU idle device after unregistering it.","state":0,"publishedAt":"2024-04-17T10:27:45.96+00:00","modifiedAt":"2026-10-15T00:39:11.582+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/acpi/processor_idle.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3d339dcbb56d8d70c1b959aff87d74adc3a84eea\",\n                            \"lessThan\": \"d351bcadab6caa6d8ce7159ff4b77e2da35c09fa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3d339dcbb56d8d70c1b959aff87d74adc3a84eea\",\n                            \"lessThan\": \"ea96bf3f80625cddba1391a87613356b1b45716d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3d339dcbb56d8d70c1b959aff87d74adc3a84eea\",\n                            \"lessThan\": \"c2a30c81bf3cb9033fa9f5305baf7c377075e2e5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3d339dcbb56d8d70c1b959aff87d74adc3a84eea\",\n                            \"lessThan\": \"1cbaf4c793b0808532f4e7b40bc4be7cec2c78f2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3d339dcbb56d8d70c1b959aff87d74adc3a84eea\",\n                            \"lessThan\": \"fad9bcd4d754cc689c19dc04d2c44b82c1a5d6c8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3d339dcbb56d8d70c1b959aff87d74adc3a84eea\",\n                            \"lessThan\": \"3d48e5be107429ff5d824e7f2a00d1b610d36fbc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3d339dcbb56d8d70c1b959aff87d74adc3a84eea\",\n                            \"lessThan\": \"8d14a4d0afb49a5b8535d414c782bb334860e73e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3d339dcbb56d8d70c1b959aff87d74adc3a84eea\",\n                            \"lessThan\": \"cd5c2d0b09d5b6d3f0a7bbabe6761a4997e9dee9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3d339dcbb56d8d70c1b959aff87d74adc3a84eea\",\n                            \"lessThan\": \"e18afcb7b2a12b635ac10081f943fcf84ddacc51\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/acpi/processor_idle.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.19.311\",\n                            \"lessThanOrEqual\": \"4.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.273\",\n                            \"lessThanOrEqual\": \"5.4.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.214\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.153\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.83\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.23\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.7.11\",\n                            \"lessThanOrEqual\": \"6.7.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.8.2\",\n                            \"lessThanOrEqual\": \"6.8.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.9\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/d351bcadab6caa6d8ce7159ff4b77e2da35c09fa","https://git.kernel.org/stable/c/ea96bf3f80625cddba1391a87613356b1b45716d","https://git.kernel.org/stable/c/c2a30c81bf3cb9033fa9f5305baf7c377075e2e5","https://git.kernel.org/stable/c/1cbaf4c793b0808532f4e7b40bc4be7cec2c78f2","https://git.kernel.org/stable/c/fad9bcd4d754cc689c19dc04d2c44b82c1a5d6c8","https://git.kernel.org/stable/c/3d48e5be107429ff5d824e7f2a00d1b610d36fbc","https://git.kernel.org/stable/c/8d14a4d0afb49a5b8535d414c782bb334860e73e","https://git.kernel.org/stable/c/cd5c2d0b09d5b6d3f0a7bbabe6761a4997e9dee9","https://git.kernel.org/stable/c/e18afcb7b2a12b635ac10081f943fcf84ddacc51"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-26894","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-26894","identifiers":["CVE-2024-26894"]},"retained":false,"historicalAffected":[]}],"coverage":[]}