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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2023-02-22 19:39:39 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-03-01 12:17:46 +0300 |
| commit | dd093fb08e8f8a958fec4eef36f9f09eac047f60 (patch) | |
| tree | b048e4c4d88c70fa710ed9de09342be501f4bc7b /Documentation | |
| parent | e02b50ca442e88122e1302d4dbc1b71a4808c13f (diff) | |
| download | linux-dd093fb08e8f8a958fec4eef36f9f09eac047f60.tar.xz | |
virt/sev-guest: Return -EIO if certificate buffer is not large enough
Commit
47894e0fa6a5 ("virt/sev-guest: Prevent IV reuse in the SNP guest driver")
changed the behavior associated with the return value when the caller
does not supply a large enough certificate buffer. Prior to the commit a
value of -EIO was returned. Now, 0 is returned. This breaks the
established ABI with the user.
Change the code to detect the buffer size error and return -EIO.
Fixes: 47894e0fa6a5 ("virt/sev-guest: Prevent IV reuse in the SNP guest driver")
Reported-by: Larry Dewey <larry.dewey@amd.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Larry Dewey <larry.dewey@amd.com>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/2afbcae6daf13f7ad5a4296692e0a0fe1bc1e4ee.1677083979.git.thomas.lendacky@amd.com
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions