CVE-2022-49710

dm mirror log: round up region bitmap size to BITS_PER_LONG

3Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackepss 0.3%

probabilidade de exploração

0.3%top 82% das CVEs

exploração observada

nãonenhuma fonte reporta

In the Linux kernel, the following vulnerability has been resolved: dm mirror log: round up region bitmap size to BITS_PER_LONG The code in dm-log rounds up bitset_size to 32 bits. It then uses find_next_zero_bit_le on the allocated region. find_next_zero_bit_le accesses the bitmap using unsigned long pointers. So, on 64-bit architectures, it may access 4 bytes beyond the allocated size. Fix this bug by rounding up bitset_size to BITS_PER_LONG. This bug was found by running the lvm2 testsuite with kasan.

Produtos afetados

Linux · Linux

Referências

https://git.kernel.org/stable/c/0d2209b54f1de0c2f99cab246d4cf2cfe24aaaa9 https://git.kernel.org/stable/c/85e123c27d5cbc22cfdc01de1e2ca1d9003a02d0 https://git.kernel.org/stable/c/9a02f3275acc628c0d956be771405ced79ac36df https://git.kernel.org/stable/c/ae460312875159285cef5bf3dc654593f404a1ef https://git.kernel.org/stable/c/ba751f0d25f07aa21ce9b85372a3792bf7969d13