SB2026062584 - Out-of-bounds read in Linux kernel bpf
Published: June 25, 2026
Security Bulletin ID
SB2026062584
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-53074)
CWE-ID: CWE-125 - Out-of-bounds read
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:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an out-of-bounds read in bpf_prog_test_run_skb() when processing crafted IPv4 or IPv6 test inputs with an insufficient L3 header. A local user can supply a specially crafted Ethernet frame to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0a04db240effd85773f66244645a28cedddb72d2
- https://git.kernel.org/stable/c/12bec2bd4b76d81c5d3996bd14ec1b7f4d983747
- https://git.kernel.org/stable/c/1f882c492d46f90bdb36f4936876c88c28dab21c
- https://git.kernel.org/stable/c/6a9f38d5ff11e00bc54baab752642978805e81eb
- https://git.kernel.org/stable/c/6def5fe753cbe5b279ee5fd10327b2611cbddaca
- https://git.kernel.org/stable/c/7254267799d083280c0e53effc101a33add95f7b
- https://git.kernel.org/stable/c/8042240412de3222d27b31e89d29336961cad9e4
- https://git.kernel.org/stable/c/e6aa481f21fc7a41ed344767ea25aae9d03fae71