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Merge tag 'integrity-v5.12-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity

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Pull integrity fix from Mimi Zohar:
 "Just one patch to address a NULL ptr dereferencing when there is a
  mismatch between the user enabled LSMs and IMA/EVM"

* tag 'integrity-v5.12-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
  integrity: double check iint_cache was initialized
This commit is contained in:
Linus Torvalds
2021-03-25 16:46:43 -07:00
parent 701c09c988 92063f3ca7
commit db24726bfe
1 changed files with 8 additions and 0 deletions
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8
security/integrity/iint.c
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@@ -98,6 +98,14 @@ struct integrity_iint_cache *integrity_inode_get(struct inode *inode)
struct rb_node *node, *parent = NULL;
struct integrity_iint_cache *iint, *test_iint;
/*
* The integrity's "iint_cache" is initialized at security_init(),
* unless it is not included in the ordered list of LSMs enabled
* on the boot command line.
*/
if (!iint_cache)
panic("%s: lsm=integrity required.\n", __func__);
iint = integrity_iint_find(inode);
if (iint)
return iint;