SB2017050217 - Fedora 26 update for kernel
Published: May 2, 2017 Updated: April 24, 2025
Security Bulletin ID
SB2017050217
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2017-7477)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker on the local network execute arbitrary code on the target system.
The weakness exists due to heap-based buffer overflow in the skb_to_sgvec() function in the MACsec driver. A remote attacker can use a MAX_SKB_FRAGS+1 size in conjunction with the NETIF_F_FRAGLIST feature, trigger memory corruption and execute arbitrary code with root privileges.
Successful exploitation of the vulnerability results in arbitrary code execution.Remediation
Install update from vendor's website.