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rtorrent
0001-utils-lockfile-avoid-stack-overflow-for-lo...
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File 0001-utils-lockfile-avoid-stack-overflow-for-lockfile-buf.patch of Package rtorrent
From 954bfb70f24578ef33b1f77cf1a3d64fc2f2f595 Mon Sep 17 00:00:00 2001 From: Aleksa Sarai <cyphar@cyphar.com> Date: Mon, 20 Jun 2022 19:09:57 +1000 Subject: [PATCH] utils: lockfile: avoid stack overflow for lockfile buffer References: https://github.com/rakshasa/rtorrent/pull/1169 Signed-off-by: Aleksa Sarai <cyphar@cyphar.com> --- src/utils/lockfile.cc | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/utils/lockfile.cc b/src/utils/lockfile.cc index 7d11d8c9970f..fac5cb23e26f 100644 --- a/src/utils/lockfile.cc +++ b/src/utils/lockfile.cc @@ -98,7 +98,8 @@ Lockfile::try_lock() { int pos = ::gethostname(buf, 255); if (pos == 0) { - ::snprintf(buf + std::strlen(buf), 255, ":+%i\n", ::getpid()); + ssize_t len = std::strlen(buf); + ::snprintf(buf + len, 255 - len, ":+%i\n", ::getpid()); int __UNUSED result = ::write(fd, buf, std::strlen(buf)); } -- 2.36.1
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