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| author | Krzysztof Wilczyński <kw@linux.com> | 2021-06-03 00:01:12 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-20 16:22:43 +0200 |
| commit | cf9c734840132c44b5e687532346208027ddbc3c (patch) | |
| tree | d65a095861eaa841ad9548283fe902c794c8787b /tools/perf/util/trace-event-scripting.c | |
| parent | 187f14fb88a9e62d55924748a274816fe6f34de6 (diff) | |
PCI/sysfs: Fix dsm_label_utf16s_to_utf8s() buffer overrun
[ Upstream commit bdcdaa13ad96f1a530711c29e6d4b8311eff767c ]
"utf16s_to_utf8s(..., buf, PAGE_SIZE)" puts up to PAGE_SIZE bytes into
"buf" and returns the number of bytes it actually put there. If it wrote
PAGE_SIZE bytes, the newline added by dsm_label_utf16s_to_utf8s() would
overrun "buf".
Reduce the size available for utf16s_to_utf8s() to use so there is always
space for the newline.
[bhelgaas: reorder patch in series, commit log]
Fixes: 6058989bad05 ("PCI: Export ACPI _DSM provided firmware instance number and string name to sysfs")
Link: https://lore.kernel.org/r/20210603000112.703037-7-kw@linux.com
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions