Re: [PATCH v7 0/3] ima: Fix IMA mishandling of LSM based rule during

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On Mon, 2023-01-09 at 21:51 -0500, Paul Moore wrote:
> On Thu, Jan 5, 2023 at 8:24 PM GUO Zihua <guozihua@xxxxxxxxxx> wrote:
> >
> > Backports the following three patches to fix the issue of IMA mishandling
> > LSM based rule during LSM policy update, causing a file to match an
> > unexpected rule.
> >
> > v7:
> >   Fixed the target for free in ima_lsm_copy_rule().
> >
> > v6:
> >   Removed the redundent i in ima_free_rule().
> >
> > v5:
> >   goes back to ima_lsm_free_rule() instead to avoid freeing
> > rule->fsname.
> >
> > v4:
> >   Make use of the exisiting ima_free_rule() instead of backported
> > ima_lsm_free_rule(). Which resolves additional memory leak issues.
> >
> > v3:
> >   Backport "LSM: switch to blocking policy update notifiers" as well, as
> > the prerequsite of "ima: use the lsm policy update notifier".
> >
> > v2:
> >   Re-adjust the bacported logic.
> >
> > GUO Zihua (1):
> >   ima: Handle -ESTALE returned by ima_filter_rule_match()
> >
> > Janne Karhunen (2):
> >   LSM: switch to blocking policy update notifiers
> >   ima: use the lsm policy update notifier
> 
> I'll defer to Mimi for the IMA bits, but the LSM and SELinux related
> bits looks fine to me and appear to be faithful backports of patches
> already in Linus' tree.

Thanks, Paul, for reviewing and confirming that it looks fine.

Mimi

> 
> >  drivers/infiniband/core/device.c    |   4 +-
> >  include/linux/security.h            |  12 +--
> >  security/integrity/ima/ima.h        |   2 +
> >  security/integrity/ima/ima_main.c   |   8 ++
> >  security/integrity/ima/ima_policy.c | 151 ++++++++++++++++++++++------
> >  security/security.c                 |  23 +++--
> >  security/selinux/hooks.c            |   2 +-
> >  security/selinux/selinuxfs.c        |   2 +-
> >  8 files changed, 155 insertions(+), 49 deletions(-)
> >
> > --
> > 2.17.1
> 





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