5.5

CVE-2022-49849

btrfs: fix match incorrectly in dev_args_match_device

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

btrfs: fix match incorrectly in dev_args_match_device

syzkaller found a failed assertion:

  assertion failed: (args->devid != (u64)-1) || args->missing, in fs/btrfs/volumes.c:6921

This can be triggered when we set devid to (u64)-1 by ioctl. In this
case, the match of devid will be skipped and the match of device may
succeed incorrectly.

Patch 562d7b1512f7 introduced this function which is used to match device.
This function contains two matching scenarios, we can distinguish them by
checking the value of args->missing rather than check whether args->devid
and args->uuid is default value.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.15.54 < 5.15.79
Linux ≫ Linux Kernel Version >= 5.16 < 6.0.9
Linux ≫ Linux Kernel Version6.1 Updaterc1
Linux ≫ Linux Kernel Version6.1 Updaterc2
Linux ≫ Linux Kernel Version6.1 Updaterc3
Linux ≫ Linux Kernel Version6.1 Updaterc4
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.063
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 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
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/c9fe4719c662e0af17eea723cf345e37719fd3c9
Patch
https://git.kernel.org/stable/c/bc6c127c377010f136360552ebf91c2723081c1b
Patch
https://git.kernel.org/stable/c/0fca385d6ebc3cabb20f67bcf8a71f1448bdc001
Patch