jbd2: fix potential use-after-free in jbd2_fc_wait_bufs
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In the Linux kernel, the following vulnerability has been resolved:
jbd2: fix potential use-after-free in jbd2_fc_wait_bufs
In 'jbd2_fc_wait_bufs' use 'bh' after put buffer head reference count
which may lead to use-after-free.
So judge buffer if uptodate before put buffer head reference count.
Produtos afetados
Linux · LinuxReferências
https://git.kernel.org/stable/c/1d4d16daec2a6689b6d3fbfc7d2078643adc6619https://git.kernel.org/stable/c/243d1a5d505d0b0460c9af0ad56ed4a56ef0bebdhttps://git.kernel.org/stable/c/2e6d9f381c1ed844531a577783fc352de7a44c8ahttps://git.kernel.org/stable/c/d11d2ded293976a1a0d9d9471827a44dc9e3c63fhttps://git.kernel.org/stable/c/effd9b3c029ecdd853a11933dcf857f5a7ca8c3d