5.5

CVE-2022-48636

s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup

In the Linux kernel, the following vulnerability has been resolved:

s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup

Fix Oops in dasd_alias_get_start_dev() function caused by the pavgroup
pointer being NULL.

The pavgroup pointer is checked on the entrance of the function but
without the lcu->lock being held. Therefore there is a race window
between dasd_alias_get_start_dev() and _lcu_update() which sets
pavgroup to NULL with the lcu->lock held.

Fix by checking the pavgroup pointer with lcu->lock held.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.25 < 4.9.330
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.295
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.260
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.215
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.146
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.71
Linux ≫ Linux Kernel Version >= 5.16 < 5.19.12
Linux ≫ Linux Kernel Version6.0 Updaterc1
Linux ≫ Linux Kernel Version6.0 Updaterc2
Linux ≫ Linux Kernel Version6.0 Updaterc3
Linux ≫ Linux Kernel Version6.0 Updaterc4
Linux ≫ Linux Kernel Version6.0 Updaterc5
Linux ≫ Linux Kernel Version6.0 Updaterc6
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.13
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1
Patch
https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4
Patch
https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036ac
Patch
https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1
Patch
https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6
Patch
https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70
Patch
https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992d
Patch
https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b
Patch