cve-2022-48636
Vulnerability from cvelistv5
Published
2024-04-28 12:59
Modified
2024-08-03 15:17
Severity
Summary
s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website


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    "dateReserved": "2024-02-25T13:44:28.315Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48636\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-28T13:15:06.710\",\"lastModified\":\"2024-04-29T12:42:03.667\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ns390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup\\n\\nFix Oops in dasd_alias_get_start_dev() function caused by the pavgroup\\npointer being NULL.\\n\\nThe pavgroup pointer is checked on the entrance of the function but\\nwithout the lcu-\u003elock being held. Therefore there is a race window\\nbetween dasd_alias_get_start_dev() and _lcu_update() which sets\\npavgroup to NULL with the lcu-\u003elock held.\\n\\nFix by checking the pavgroup pointer with lcu-\u003elock held.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: s390/dasd: corrige Ups en dasd_alias_get_start_dev debido a la falta de pavgroup. Corrige Ups en la funci\u00f3n dasd_alias_get_start_dev() causada porque el puntero pavgroup es NULL. El puntero pavgroup se verifica en la entrada de la funci\u00f3n pero sin que se mantenga presionado el bloqueo lcu-\u0026gt;. Por lo tanto, existe una ventana de ejecuci\u00f3n entre dasd_alias_get_start_dev() y _lcu_update() que establece pavgroup en NULL con el bloqueo lcu-\u0026gt;retenido. Para solucionarlo, compruebe el puntero de pavgroup con lcu-\u0026gt;lock retenido.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036ac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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