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| author | Ludovic Courtès <ludo@gnu.org> | 2017-05-19 10:50:20 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2017-05-19 10:50:20 +0200 |
| commit | e7fbd49132406bb9ec12141ac77ac401f58ee267 (patch) | |
| tree | c11fc06d12dba52e12f596fba146cc287e09826d | |
| parent | 7afc2aabdf2041faac1d1adfc5752f1e92d29822 (diff) | |
| download | guix-e7fbd49132406bb9ec12141ac77ac401f58ee267.tar.gz guix-e7fbd49132406bb9ec12141ac77ac401f58ee267.zip | |
gnu: guile-ssh: Fix potential double-free/use-after-free issue.
Fixes <http://bugs.gnu.org/26976>.
Reported by Mark H Weaver <mhw@netris.org>.
* gnu/packages/patches/guile-ssh-double-free.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/ssh.scm (guile-ssh)[source](patches): Add it.
| -rw-r--r-- | gnu/local.mk | 1 | ||||
| -rw-r--r-- | gnu/packages/patches/guile-ssh-double-free.patch | 37 | ||||
| -rw-r--r-- | gnu/packages/ssh.scm | 3 |
3 files changed, 40 insertions, 1 deletions
diff --git a/gnu/local.mk b/gnu/local.mk index 922fb1a6bf..a1530af790 100644 --- a/gnu/local.mk +++ b/gnu/local.mk @@ -654,6 +654,7 @@ dist_patch_DATA = \ %D%/packages/patches/guile-relocatable.patch \ %D%/packages/patches/guile-rsvg-pkgconfig.patch \ %D%/packages/patches/guile-ssh-rexec-bug.patch \ + %D%/packages/patches/guile-ssh-double-free.patch \ %D%/packages/patches/gtk2-respect-GUIX_GTK2_PATH.patch \ %D%/packages/patches/gtk2-respect-GUIX_GTK2_IM_MODULE_FILE.patch \ %D%/packages/patches/gtk2-theme-paths.patch \ diff --git a/gnu/packages/patches/guile-ssh-double-free.patch b/gnu/packages/patches/guile-ssh-double-free.patch new file mode 100644 index 0000000000..9692b81d39 --- /dev/null +++ b/gnu/packages/patches/guile-ssh-double-free.patch @@ -0,0 +1,37 @@ +Fix a double-free or use-after-free issue with Guile-SSH used +with Guile 2.2. See <https://bugs.gnu.org/26976>. + +diff --git a/libguile-ssh/channel-type.c b/libguile-ssh/channel-type.c +index 3dd641f..0839854 100644 +--- a/libguile-ssh/channel-type.c ++++ b/libguile-ssh/channel-type.c +@@ -229,10 +229,11 @@ ptob_close (SCM channel) + ssh_channel_free (ch->ssh_channel); + } + ++ SCM_SETSTREAM (channel, NULL); ++ + #if USING_GUILE_BEFORE_2_2 + scm_gc_free (pt->write_buf, pt->write_buf_size, "port write buffer"); + scm_gc_free (pt->read_buf, pt->read_buf_size, "port read buffer"); +- SCM_SETSTREAM (channel, NULL); + + return 0; + #endif +diff --git a/libguile-ssh/sftp-file-type.c b/libguile-ssh/sftp-file-type.c +index 8879924..f87cf03 100644 +--- a/libguile-ssh/sftp-file-type.c ++++ b/libguile-ssh/sftp-file-type.c +@@ -224,10 +224,11 @@ ptob_close (SCM sftp_file) + sftp_close (fd->file); + } + ++ SCM_SETSTREAM (sftp_file, NULL); ++ + #if USING_GUILE_BEFORE_2_2 + scm_gc_free (pt->write_buf, pt->write_buf_size, "port write buffer"); + scm_gc_free (pt->read_buf, pt->read_buf_size, "port read buffer"); +- SCM_SETSTREAM (sftp_file, NULL); + + return 1; + #endif diff --git a/gnu/packages/ssh.scm b/gnu/packages/ssh.scm index 6a074d10fa..bb1898774b 100644 --- a/gnu/packages/ssh.scm +++ b/gnu/packages/ssh.scm @@ -226,7 +226,8 @@ Additionally, various channel-specific options can be negotiated.") (sha256 (base32 "0r261i8kc3avbmbwgyzak2vnqwssjlgz37g2y2fwm80w9bmn2m7j")) - (patches (search-patches "guile-ssh-rexec-bug.patch")) + (patches (search-patches "guile-ssh-rexec-bug.patch" + "guile-ssh-double-free.patch")) (modules '((guix build utils))) (snippet ;; 'configure.ac' mistakenly tries to link files from examples/ |