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Code Issues Releases Wiki Activity

Add a bounds check on ff_close, ff_pwrite and ff_pread

pull/904/head
Yosuke Shimizu 2026-04-03 08:06:44 +09:00
parent e8f54ae3d0
commit 96b6724cbb
1 changed files with 12 additions and 2 deletions
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14
src/wolfsftp.c
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@ -1977,6 +1977,8 @@ int ff_open(const char *fname, int flag, int perm)
int ff_close(int fd)
{
if (fd < 0 || fd >= WOLFSSH_FATFS_MAX_FILES)
return -1;
f_close(&fd_pool[fd].f);
if (fd_pool[fd].used)
fd_pool[fd].used = 0;
@ -1985,9 +1987,13 @@ int ff_close(int fd)
int ff_pwrite(int fd, const byte *buffer, int sz)
{
FIL *f = &fd_pool[fd].f;
FIL *f;
FRESULT ret;
unsigned int rsz;
if (fd < 0 || fd >= WOLFSSH_FATFS_MAX_FILES)
return -1;
f = &fd_pool[fd].f;
if (fd_pool[fd].used == 0)
return -1;
ret = f_write(f, buffer, sz, &rsz);
@ -1997,9 +2003,13 @@ int ff_pwrite(int fd, const byte *buffer, int sz)
}
int ff_pread(int fd, byte *buffer, int sz)
{
FIL *f = &fd_pool[fd].f;
FIL *f;
FRESULT ret;
unsigned int rsz;
if (fd < 0 || fd >= WOLFSSH_FATFS_MAX_FILES)
return -1;
f = &fd_pool[fd].f;
if (fd_pool[fd].used == 0)
return -1;
ret = f_read(f, buffer, sz, &rsz);