Zhang Zixun d49992de00 x86/mce/inject: Avoid out-of-bounds write when setting flags ... [ Upstream commit de768416b2 ] A contrived zero-length write, for example, by using write(2): ... ret = write(fd, str, 0); ... to the "flags" file causes: BUG: KASAN: stack-out-of-bounds in flags_write Write of size 1 at addr ffff888019be7ddf by task writefile/3787 CPU: 4 PID: 3787 Comm: writefile Not tainted 5.16.0-rc7+ #12 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014 due to accessing buf one char before its start. Prevent such out-of-bounds access. [ bp: Productize into a proper patch. Link below is the next best thing because the original mail didn't get archived on lore. ] Fixes: 0451d14d05 ("EDAC, mce_amd_inj: Modify flags attribute to use string arguments") Signed-off-by: Zhang Zixun <zhang133010@icloud.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/linux-edac/YcnePfF1OOqoQwrX@zn.tnic/ Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-01-27 09:19:35 +01:00
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arm	ARM: dts: armada-38x: Add generic compatible to UART nodes	2022-01-27 09:19:34 +01:00
arm64	arm64: dts: ti: k3-j721e: Fix the L2 cache sets	2022-01-27 09:19:32 +01:00
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x86	x86/mce/inject: Avoid out-of-bounds write when setting flags	2022-01-27 09:19:35 +01:00
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