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authorBingJing Chang <bingjingc@synology.com>2021-01-29 05:53:15 +0100
committerJan Kara <jack@suse.cz>2021-02-03 19:05:52 +0100
commita0b3cb71a1f16942eb7be7483b2568c7b0fe0231 (patch)
tree97eddb543054909d8ea9cd0c2f1377f56bd7f208 /fs/isofs
parentparser: add unsigned int parser (diff)
downloadlinux-a0b3cb71a1f16942eb7be7483b2568c7b0fe0231.tar.xz
linux-a0b3cb71a1f16942eb7be7483b2568c7b0fe0231.zip
isofs: handle large user and group ID
If uid or gid of mount options is larger than INT_MAX, isofs_fill_super will return -EINVAL. The problem can be encountered by a domain user or reproduced via: mount -o loop,uid=2147483648 ubuntu-16.04.6-server-amd64.iso /mnt This can be fixed as commit 233a01fa9c4c ("fuse: handle large user and group ID"). Link: https://lore.kernel.org/r/20210129045315.10375-1-bingjingc@synology.com Reviewed-by: Robbie Ko <robbieko@synology.com> Reviewed-by: Chung-Chiang Cheng <cccheng@synology.com> Signed-off-by: BingJing Chang <bingjingc@synology.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/isofs')
-rw-r--r--fs/isofs/inode.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index ec90773527ee..21edc423b79f 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -339,6 +339,7 @@ static int parse_options(char *options, struct iso9660_options *popt)
{
char *p;
int option;
+ unsigned int uv;
popt->map = 'n';
popt->rock = 1;
@@ -434,17 +435,17 @@ static int parse_options(char *options, struct iso9660_options *popt)
case Opt_ignore:
break;
case Opt_uid:
- if (match_int(&args[0], &option))
+ if (match_uint(&args[0], &uv))
return 0;
- popt->uid = make_kuid(current_user_ns(), option);
+ popt->uid = make_kuid(current_user_ns(), uv);
if (!uid_valid(popt->uid))
return 0;
popt->uid_set = 1;
break;
case Opt_gid:
- if (match_int(&args[0], &option))
+ if (match_uint(&args[0], &uv))
return 0;
- popt->gid = make_kgid(current_user_ns(), option);
+ popt->gid = make_kgid(current_user_ns(), uv);
if (!gid_valid(popt->gid))
return 0;
popt->gid_set = 1;