diff options
Diffstat (limited to 'meta-openembedded/meta-filesystems/recipes-support/fuse/files/CVE-2018-10906-2.patch')
-rw-r--r-- | meta-openembedded/meta-filesystems/recipes-support/fuse/files/CVE-2018-10906-2.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/meta-openembedded/meta-filesystems/recipes-support/fuse/files/CVE-2018-10906-2.patch b/meta-openembedded/meta-filesystems/recipes-support/fuse/files/CVE-2018-10906-2.patch new file mode 100644 index 000000000..104aa171b --- /dev/null +++ b/meta-openembedded/meta-filesystems/recipes-support/fuse/files/CVE-2018-10906-2.patch @@ -0,0 +1,48 @@ +From 5018a0c016495155ee598b7e0167b43d5d902414 Mon Sep 17 00:00:00 2001 +From: Jann Horn <jannh@google.com> +Date: Sat, 14 Jul 2018 03:47:50 -0700 +Subject: [PATCH] fusermount: refuse unknown options + +Blacklists are notoriously fragile; especially if the kernel wishes to add +some security-critical mount option at a later date, all existing systems +with older versions of fusermount installed will suddenly have a security +problem. +Additionally, if the kernel's option parsing became a tiny bit laxer, the +blacklist could probably be bypassed. + +Whitelist known-harmless flags instead, even if it's slightly more +inconvenient. + +CVE: CVE-2018-10906 +Upstream-Status: Backport [https://github.com/libfuse/libfuse/commit/5018a0c016495155ee598b7e0167b43d5d902414] + +Signed-off-by: Jagadeesh Krishnanjanappa <jkrishnanjanappa@mvista.com> +--- + util/fusermount.c | 8 +++++++- + 1 file changed, 7 insertions(+), 1 deletion(-) + +diff --git a/util/fusermount.c b/util/fusermount.c +index 4e0f51a..2792407 100644 +--- a/util/fusermount.c ++++ b/util/fusermount.c +@@ -819,10 +819,16 @@ static int do_mount(const char *mnt, char **typep, mode_t rootmode, + flags |= flag; + else + flags &= ~flag; +- } else { ++ } else if (opt_eq(s, len, "default_permissions") || ++ opt_eq(s, len, "allow_other") || ++ begins_with(s, "max_read=") || ++ begins_with(s, "blksize=")) { + memcpy(d, s, len); + d += len; + *d++ = ','; ++ } else { ++ fprintf(stderr, "%s: unknown option '%.*s'\n", progname, len, s); ++ exit(1); + } + } + } +-- +2.13.3 + |