Description

The Linux kernel before 5.4.1 on powerpc allows Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs, aka CID-39e72bf96f58. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c.

References

http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html

http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html

http://www.openwall.com/lists/oss-security/2019/11/27/1

https://access.redhat.com/errata/RHSA-2020:0174

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.1

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=39e72bf96f5847ba87cc5bd7a3ce0fed813dc9ad

https://lists.fedoraproject.org/archives/list/[email protected]/message/LYIFGYEDQXP5DVJQQUARQRK2PXKBKQGY/

https://lists.fedoraproject.org/archives/list/[email protected]/message/YWWOOJKZ4NQYN4RMFIVJ3ZIXKJJI3MKP/

https://seclists.org/bugtraq/2020/Jan/10

https://security.netapp.com/advisory/ntap-20200103-0001/

https://usn.ubuntu.com/4225-1/

https://usn.ubuntu.com/4225-2/

https://usn.ubuntu.com/4226-1/

https://usn.ubuntu.com/4227-1/

https://usn.ubuntu.com/4227-2/

https://usn.ubuntu.com/4228-1/

https://usn.ubuntu.com/4228-2/

https://www.openwall.com/lists/oss-security/2019/11/27/1

Details

Risk Information

CVSS v2

CVSS v3