CVE-2023-52668
Vulnerability from cvelistv5
Published
2024-05-17 14:01
Modified
2024-11-04 14:50
Severity ?
Summary
btrfs: zoned: fix lock ordering in btrfs_zone_activate()
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1908e9d01e5395adff68d9d308a0fb15337e6272
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f74989f5909cdec9b1274641f0fa306b15bb476
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b18f3b60b35a8c01c9a2a0f0d6424c6d73971dc3
Impacted products
Vendor Product Version
Linux Linux Version: 6.6
Show details on NVD website

To clipboard 

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: fix lock ordering in btrfs_zone_activate()\n\nThe btrfs CI reported a lockdep warning as follows by running generic\ngeneric/129.\n\n   WARNING: possible circular locking dependency detected\n   6.7.0-rc5+ #1 Not tainted\n   ------------------------------------------------------\n   kworker/u5:5/793427 is trying to acquire lock:\n   ffff88813256d028 (\u0026cache-\u003elock){+.+.}-{2:2}, at: btrfs_zone_finish_one_bg+0x5e/0x130\n   but task is already holding lock:\n   ffff88810a23a318 (\u0026fs_info-\u003ezone_active_bgs_lock){+.+.}-{2:2}, at: btrfs_zone_finish_one_bg+0x34/0x130\n   which lock already depends on the new lock.\n\n   the existing dependency chain (in reverse order) is:\n   -\u003e #1 (\u0026fs_info-\u003ezone_active_bgs_lock){+.+.}-{2:2}:\n   ...\n   -\u003e #0 (\u0026cache-\u003elock){+.+.}-{2:2}:\n   ...\n\nThis is because we take fs_info-\u003ezone_active_bgs_lock after a block_group\u0027s\nlock in btrfs_zone_activate() while doing the opposite in other places.\n\nFix the issue by expanding the fs_info-\u003ezone_active_bgs_lock\u0027s critical\nsection and taking it before a block_group\u0027s lock."
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    "cveId": "CVE-2023-52668",
    "datePublished": "2024-05-17T14:01:52.768Z",
    "dateReserved": "2024-03-07T14:49:46.885Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52668\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-17T14:15:09.640\",\"lastModified\":\"2024-05-17T18:35:35.070\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbtrfs: zoned: fix lock ordering in btrfs_zone_activate()\\n\\nThe btrfs CI reported a lockdep warning as follows by running generic\\ngeneric/129.\\n\\n   WARNING: possible circular locking dependency detected\\n   6.7.0-rc5+ #1 Not tainted\\n   ------------------------------------------------------\\n   kworker/u5:5/793427 is trying to acquire lock:\\n   ffff88813256d028 (\u0026cache-\u003elock){+.+.}-{2:2}, at: btrfs_zone_finish_one_bg+0x5e/0x130\\n   but task is already holding lock:\\n   ffff88810a23a318 (\u0026fs_info-\u003ezone_active_bgs_lock){+.+.}-{2:2}, at: btrfs_zone_finish_one_bg+0x34/0x130\\n   which lock already depends on the new lock.\\n\\n   the existing dependency chain (in reverse order) is:\\n   -\u003e #1 (\u0026fs_info-\u003ezone_active_bgs_lock){+.+.}-{2:2}:\\n   ...\\n   -\u003e #0 (\u0026cache-\u003elock){+.+.}-{2:2}:\\n   ...\\n\\nThis is because we take fs_info-\u003ezone_active_bgs_lock after a block_group\u0027s\\nlock in btrfs_zone_activate() while doing the opposite in other places.\\n\\nFix the issue by expanding the fs_info-\u003ezone_active_bgs_lock\u0027s critical\\nsection and taking it before a block_group\u0027s lock.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: btrfs:zoned: corrige el orden de bloqueo en btrfs_zone_activate() El CI de btrfs inform\u00f3 una advertencia de bloqueo de la siguiente manera al ejecutar generic generic/129. ADVERTENCIA: se detect\u00f3 posible dependencia de bloqueo circular 6.7.0-rc5+ #1 No contaminado ---------------------------------- -------------------- kworker/u5:5/793427 est\u00e1 intentando adquirir el bloqueo: ffff88813256d028 (\u0026amp;cache-\u0026gt;lock){+.+.}-{2: 2}, en: btrfs_zone_finish_one_bg+0x5e/0x130 pero la tarea ya mantiene el bloqueo: ffff88810a23a318 (\u0026amp;fs_info-\u0026gt;zone_active_bgs_lock){+.+.}-{2:2}, en: btrfs_zone_finish_one_bg+0x34/0x130 cuyo bloqueo ya depende del cerradura nueva. la cadena de dependencia existente (en orden inverso) es: -\u0026gt; #1 (\u0026amp;fs_info-\u0026gt;zone_active_bgs_lock){+.+.}-{2:2}: ... -\u0026gt; #0 (\u0026amp;cache-\u0026gt;lock){+. +.}-{2:2}: ... Esto se debe a que tomamos fs_info-\u0026gt;zone_active_bgs_lock despu\u00e9s del bloqueo de un block_group en btrfs_zone_activate() mientras hacemos lo contrario en otros lugares. Solucione el problema expandiendo la secci\u00f3n cr\u00edtica de fs_info-\u0026gt;zone_active_bgs_lock y llev\u00e1ndola antes del bloqueo de block_group.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1908e9d01e5395adff68d9d308a0fb15337e6272\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6f74989f5909cdec9b1274641f0fa306b15bb476\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b18f3b60b35a8c01c9a2a0f0d6424c6d73971dc3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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