cve-2024-35974
Vulnerability from cvelistv5
Published
2024-05-20 09:42
Modified
2024-08-02 03:21
Severity
Summary
block: fix q->blkg_list corruption during disk rebind
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/740ffad95ca8033bd6e080ed337655b13b4d38ac
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/858c489d81d659af17a4d11cfaad2afb42e47a76
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8b8ace080319a866f5dfe9da8e665ae51d971c54
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix q-\u003eblkg_list corruption during disk rebind\n\nMultiple gendisk instances can allocated/added for single request queue\nin case of disk rebind. blkg may still stay in q-\u003eblkg_list when calling\nblkcg_init_disk() for rebind, then q-\u003eblkg_list becomes corrupted.\n\nFix the list corruption issue by:\n\n- add blkg_init_queue() to initialize q-\u003eblkg_list \u0026 q-\u003eblkcg_mutex only\n- move calling blkg_init_queue() into blk_alloc_queue()\n\nThe list corruption should be started since commit f1c006f1c685 (\"blk-cgroup:\nsynchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()\")\nwhich delays removing blkg from q-\u003eblkg_list into blkg_free_workfn()."
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-35974\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-20T10:15:12.147\",\"lastModified\":\"2024-05-20T13:00:04.957\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nblock: fix q-\u003eblkg_list corruption during disk rebind\\n\\nMultiple gendisk instances can allocated/added for single request queue\\nin case of disk rebind. blkg may still stay in q-\u003eblkg_list when calling\\nblkcg_init_disk() for rebind, then q-\u003eblkg_list becomes corrupted.\\n\\nFix the list corruption issue by:\\n\\n- add blkg_init_queue() to initialize q-\u003eblkg_list \u0026 q-\u003eblkcg_mutex only\\n- move calling blkg_init_queue() into blk_alloc_queue()\\n\\nThe list corruption should be started since commit f1c006f1c685 (\\\"blk-cgroup:\\nsynchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()\\\")\\nwhich delays removing blkg from q-\u003eblkg_list into blkg_free_workfn().\"},{\"lang\":\"es\",\"value\":\" En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: bloque: corrige la corrupci\u00f3n de q-\u0026gt;blkg_list durante la revinculaci\u00f3n del disco. Se pueden asignar/agregar m\u00faltiples instancias de gendisk para una \u00fanica cola de solicitudes en caso de volver a vincular el disco. Es posible que blkg a\u00fan permanezca en q-\u0026gt;blkg_list cuando se llama a blkcg_init_disk() para volver a vincular, entonces q-\u0026gt;blkg_list se corrompe. Solucione el problema de corrupci\u00f3n de la lista: - agregue blkg_init_queue() para inicializar q-\u0026gt;blkg_list \u0026amp; q-\u0026gt;blkcg_mutex solamente - mueva la llamada a blkg_init_queue() a blk_alloc_queue() La corrupci\u00f3n de la lista debe iniciarse desde la confirmaci\u00f3n f1c006f1c685 (\\\"blk-cgroup: sincronizar pd_free_fn() de blkg_free_workfn() y blkcg_deactivate_policy()\\\") que retrasa la eliminaci\u00f3n de blkg de q-\u0026gt;blkg_list en blkg_free_workfn().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/740ffad95ca8033bd6e080ed337655b13b4d38ac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/858c489d81d659af17a4d11cfaad2afb42e47a76\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8b8ace080319a866f5dfe9da8e665ae51d971c54\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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