CVE-2016-9604
It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as '.dns_resolver' in RHEL-7 or '.builtin_trusted_keys' upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 4.11-rc5 | 4.11-rc5.x |
| linux / linux_kernel | 4.11-rc2 | 4.11-rc2.x |
| linux / linux_kernel | - | 4.11.x |
| linux / linux_kernel | 4.11-rc3 | 4.11-rc3.x |
| linux / linux_kernel | 4.11-rc4 | 4.11-rc4.x |
| linux / linux_kernel | 4.11-rc6 | 4.11-rc6.x |
| linux / linux_kernel | 4.11-rc7 | 4.11-rc7.x |
| linux / linux_kernel | 4.11-rc1 | 4.11-rc1.x |
- http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html
- http://www.securityfocus.com/bid/102135
- https://access.redhat.com/errata/RHSA-2017:1842
- https://access.redhat.com/errata/RHSA-2017:2077
- https://access.redhat.com/errata/RHSA-2017:2669
- https://bugzilla.novell.com/show_bug.cgi?id=1035576
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f
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