CVE-2026-89719: falha em Linux
zram: fix out-of-bounds access in read_block_state()
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3Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackepss 0.2%
probabilidade de exploração
0.2%top 94% das CVEs
exploração observada
nãonenhuma fonte reporta
In the Linux kernel, the following vulnerability has been resolved:
zram: fix out-of-bounds access in read_block_state()
read_block_state() calculates nr_pages before taking dev_lock. If the
device is reset and reinitialized with a smaller disksize before lock
acquisition, nr_pages still describes the old table. The subsequent loop
can then call slot_lock() past the end of the newly allocated table.
Read disksize after acquiring dev_lock and checking that the device is
initialized. The read lock then keeps the table and its bound stable for
the duration of the scan.
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