Vulnerability CVE-2023-40791


Published: 2023-10-16

Description:
extract_user_to_sg in lib/scatterlist.c in the Linux kernel before 6.4.12 fails to unpin pages in a certain situation, as demonstrated by a WARNING for try_grab_page.

 References:
https://lkml.org/lkml/2023/8/3/323
https://lore.kernel.org/linux-crypto/20571.1690369076@warthog.procyon.org.uk/
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.12
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f443fd5af5dbd531f880d3645d5dd36976cf087f

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