SB2017080907 - OpenSUSE Linux update for the Linux Kernel
Published: August 9, 2017
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2017-11473)
The vulnerability allows a local attacker to gain elevated privileges on the target system.The weakness exists in the mp_override_legacy_irq() function in arch/x86/kernel/acpi/boot.c due to buffer overflow. A local attacker can submit a specially crafted ACPI table, trigger memory corruption and gain root privileges.
2) Race condition (CVE-ID: CVE-2017-7533)
The vulnerability allows a local user to execute arbitrary code with escalated privileges.The vulnerability exists due to a race condition in the fsnotify implementation in the Linux kernel through 4.12.4. A local user can create an application, which leverages simultaneous execution of the inotify_handle_event and vfs_rename functions and trigger memory corruption and denials of service attack or execute arbitrary code on the target system with root privileges.
Successful exploitation of this vulnerability may allow a local user to obtain elevated privileges on the system.
Note: this vulnerability is being active exploited in the wild for 32-bit systems in August 2017.
3) Buffer overflow (CVE-ID: CVE-2017-7541)
The vulnerability allows a local attacker to execute arbitrary code on the target system with elevated privileges.
The vulnerability exists due to boundary error in brcmf_cfg80211_mgmt_tx() function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c in the Linux kernel before 4.12.3. A local user can create a specially crafted NL80211_CMD_FRAME Netlink packet and trigger DoS conditions or execute arbitrary code on the target system with elevated privileges.
Successful exploitation of this vulnerability may allow an attacker to obtain elevated privileges.
4) Denial of service (CVE-ID: CVE-2017-7542)
The vulnerability allows a local attacker to cause DoS condition on the target system.The weakness exists in the ip6_find_1stfragopt function in net/ipv6/output_core.c due to leveraging the ability to open a raw socket. A local attacker can trigger integer overflow and infinite loop and cause a denial of service.
Remediation
Install update from vendor's website.