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swh:1:snp:49cd9498d6cccc5e78252c27dcb645bcf7bf0c91
Revision 1d6a821277aaa0cdd666278aaff93298df313d41 authored by Marc Zyngier on 15 February 2016, 17:04:04 UTC, committed by Marc Zyngier on 24 February 2016, 11:53:09 UTC 
arm/arm64: KVM: Feed initialized memory to MMIO accesses
 
On an MMIO access, we always copy the on-stack buffer info
the shared "run" structure, even if this is a read access.
This ends up leaking up to 8 bytes of uninitialized memory
into userspace, depending on the size of the access.

An obvious fix for this one is to only perform the copy if
this is an actual write.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
1 parent 236cf17
History
Tip revision: 644e9524388a5dbc6d4f58c492ee9ef7bd4ddf4d authored by Linus Torvalds on 26 November 2022, 02:02:49 UTC
Merge tag 'for-v6.1-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Tip revision: 644e952
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