[PATCH v2 0/2] perf trace-event: Fix security vulnerabilities in trace-event-read.c

This series fixes two security issues in trace-event-read.c:

1. Stack buffer overflow in read_string() when a string exceeds
   BUFSIZ, due to a missing bounds check.

2. Integer truncation when passing 64-bit sizes into functions using
   'int' parameters, causing uninitialized memory to be dumped and
   parsers to read out of bounds.

Both are pre-existing bugs; this series fixes them.

Changes in v2:
- Added new patch to fix integer truncation in do_read() and skip().
- Organized as patch series to separate the two security fixes.

v1: https://lore.kernel.org/linux-perf-users/[email protected]/

Tanushree Shah (2):
  perf trace-event: Fix buffer overflow in read_string()
  perf trace-event: Fix integer truncation in do_read() and skip()

 tools/perf/util/trace-event-read.c | 33 +++++++++++++++++-------------
 1 file changed, 19 insertions(+), 14 deletions(-)

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2.47.3