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medium5.5

CVE-2023-53672

In the Linux kernel, the following vulnerability has been resolved: btrfs: output extra debug info if we failed to find an inline backref [BUG] Syzbot reported…

Impact

In the Linux kernel, the following vulnerability has been resolved: btrfs: output extra debug info if we failed to find an inline backref [BUG] Syzbot reported several warning triggered inside lookup_inline_extent_backref(). [CAUSE] As usual, the reproducer doesn't reliably trigger locally here, but at least we know the WARN_ON() is triggered when an inline backref can not be found, and it can only be triggered when @insert is true. (I.e. inserting a new inline backref, which means the backref should already exist) [ENHANCEMENT] After the WARN_ON(), dump all the parameters and the extent tree leaf to help debug.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 3.9.1 before 4.14.326
from 4.15 before 4.19.295
from 4.20 before 5.4.257
from 5.5 before 5.10.197
from 5.11 before 5.15.133
from 5.16 before 6.1.55

References