Out-of-bounds read in Linux kernel - CVE-2016-9777
Published: December 28, 2016 / Updated: May 16, 2023
Vulnerability identifier: #VU90374
CSH Severity: Low
CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-9777
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to an out-of-bounds read error within the ioapic_read_indirect() function in arch/x86/kvm/ioapic.c. A local user can escalate privileges on the system.
Affected software
Linux kernel
Fedora
kernel
Fedora
kernel
How to mitigate CVE-2016-9777
Install update from vendor's website.
Linux kernel - update to 4.8.12
kernel - addressed in versions 4.8.12-100.fc23, 4.8.12-200.fc24, 4.8.12-300.fc25
kernel - addressed in versions 4.8.12-100.fc23, 4.8.12-200.fc24, 4.8.12-300.fc25
External References
- https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
- https://bugzilla.redhat.com/show_bug.cgi?id=1400804
- http://www.openwall.com/lists/oss-security/2016/12/02/2
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
- http://www.securityfocus.com/bid/94640