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| author | Florian Weimer <fweimer@redhat.com> | 2013-08-16 09:38:52 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2013-08-16 09:40:34 +0200 |
| commit | 91ce40854d0b7f865cf5024ef95a8026b76096f3 (patch) | |
| tree | 268277f390b889cc857152d268242bd603036b9e /manual/conf.texi | |
| parent | ca0a6bc4c5c53aa6c4a735c36336408a06b8cd89 (diff) | |
| download | glibc-91ce40854d0b7f865cf5024ef95a8026b76096f3.tar.gz glibc-91ce40854d0b7f865cf5024ef95a8026b76096f3.tar.xz glibc-91ce40854d0b7f865cf5024ef95a8026b76096f3.zip | |
CVE-2013-4237, BZ #14699: Buffer overflow in readdir_r
* sysdeps/posix/dirstream.h (struct __dirstream): Add errcode member. * sysdeps/posix/opendir.c (__alloc_dir): Initialize errcode member. * sysdeps/posix/rewinddir.c (rewinddir): Reset errcode member. * sysdeps/posix/readdir_r.c (__READDIR_R): Enforce NAME_MAX limit. Return delayed error code. Remove GETDENTS_64BIT_ALIGNED conditional. * sysdeps/unix/sysv/linux/wordsize-64/readdir_r.c: Do not define GETDENTS_64BIT_ALIGNED. * sysdeps/unix/sysv/linux/i386/readdir64_r.c: Likewise. * manual/filesys.texi (Reading/Closing Directory): Document ENAMETOOLONG return value of readdir_r. Recommend readdir more strongly. * manual/conf.texi (Limits for Files): Add portability note to NAME_MAX, PATH_MAX. (Pathconf): Add portability note for _PC_NAME_MAX, _PC_PATH_MAX.
Diffstat (limited to 'manual/conf.texi')
| -rw-r--r-- | manual/conf.texi | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/manual/conf.texi b/manual/conf.texi index 7eb8b3625a..c720063b83 100644 --- a/manual/conf.texi +++ b/manual/conf.texi @@ -1149,6 +1149,9 @@ typed ahead as input. @xref{I/O Queues}. @deftypevr Macro int NAME_MAX The uniform system limit (if any) for the length of a file name component, not including the terminating null character. + +@strong{Portability Note:} On some systems, @theglibc{} defines +@code{NAME_MAX}, but does not actually enforce this limit. @end deftypevr @comment limits.h @@ -1157,6 +1160,9 @@ including the terminating null character. The uniform system limit (if any) for the length of an entire file name (that is, the argument given to system calls such as @code{open}), including the terminating null character. + +@strong{Portability Note:} @Theglibc{} does not enforce this limit +even if @code{PATH_MAX} is defined. @end deftypevr @cindex limits, pipe buffer size @@ -1476,6 +1482,9 @@ Inquire about the value of @code{POSIX_REC_MIN_XFER_SIZE}. Inquire about the value of @code{POSIX_REC_XFER_ALIGN}. @end table +@strong{Portability Note:} On some systems, @theglibc{} does not +enforce @code{_PC_NAME_MAX} or @code{_PC_PATH_MAX} limits. + @node Utility Limits @section Utility Program Capacity Limits |