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overlayfs fixes for 6.2-rc6

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Merge tag 'ovl-fixes-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs

Pull overlayfs fixes from Miklos Szeredi:
 "Fix two bugs, a recent one introduced in the last cycle, and an older
  one from v5.11"

* tag 'ovl-fixes-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: fail on invalid uid/gid mapping at copy up
  ovl: fix tmpfile leak
This commit is contained in:
Linus Torvalds 2023-01-27 13:39:30 -08:00
commit 0acffb235f
1 changed files with 5 additions and 1 deletions
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6
fs/overlayfs/copy_up.c
View file

@ -792,7 +792,7 @@ static int ovl_copy_up_tmpfile(struct ovl_copy_up_ctx *c)
if (!c->metacopy && c->stat.size) {
err = ovl_copy_up_file(ofs, c->dentry, tmpfile, c->stat.size);
if (err)
return err;
goto out_fput;
}
err = ovl_copy_up_metadata(c, temp);
@ -1011,6 +1011,10 @@ static int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry,
if (err)
return err;
if (!kuid_has_mapping(current_user_ns(), ctx.stat.uid) ||
!kgid_has_mapping(current_user_ns(), ctx.stat.gid))
return -EOVERFLOW;
ctx.metacopy = ovl_need_meta_copy_up(dentry, ctx.stat.mode, flags);
if (parent) {