SB2017041323 - Fedora 25 update for kernel
Published: April 13, 2017 Updated: April 24, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Heap-out-of-bounds write (CVE-ID: CVE-2017-7308)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear
The vulnerability allows a local attacker to cause DoS conditions.
The weakness exists due to improper validation of certain block-size data by the packet_set_ring function in net/packet/af_packet.c. A local attacker can provide specific parameters to the PACKET_RX_RING option on an AF_PACKET socket with a TPACKET_V3 ring buffer version enabled, trigger heap-out-of-bounds write and cause denial of service.
Successful exploitation of the vulnerability results in denial of service.
2) Denial of service (CVE-ID: CVE-2017-7618)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists due to an API operation calling its own callback flaw in crypto/ahash.c. A local attacker can trigger EBUSY on a full queue and cause an infinite recursion on the system.
Successful exploitation of the vulnerability results in denial of service.
3) Information disclosure (CVE-ID: CVE-2017-7616)
CWE-ID: CWE-388 - Error Handling
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to obtain potentially sensitive information from system memory
The weakness exists due to an error handling flaw in the set_mempolicy() and mbind compat() system calls in 'mm/mempolicy.c'. A local attacker can trigger a failure of a certain bitmap operation and obtain sensitive information from uninitialized stack data.
Successful exploitation of the vulnerability results in information disclosure.
Remediation
Install update from vendor's website.