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Merge branch 'canon-fix' into 'main'

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glib: fix buffer overflow in g_canonicalize_filename()

See merge request GNOME/glib!2451
This commit is contained in:
Philip Withnall 2022-03-04 20:16:29 +00:00
commit f0baa136f9
1 changed files with 6 additions and 2 deletions
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8
glib/gfileutils.c
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@ -2754,8 +2754,12 @@ g_canonicalize_filename (const gchar *filename,
*output = G_DIR_SEPARATOR;
/* 1 to re-increment after the final decrement above (so that output >= canon),
* and 1 to skip the first `/` */
output += 2;
* and 1 to skip the first `/`. There might not be a first `/` if
* the @canon is a Windows `//server/share` style path with no
* trailing directories. @after_root will be '\0' in that case. */
output++;
if (*output == G_DIR_SEPARATOR)
output++;
/* POSIX allows double slashes at the start to mean something special
* (as does windows too). So, "//" != "/", but more than two slashes