What’s Vulnerable › Vulnerabilities

CVE-2017-17862

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-12-27 · updated 2026-06-17
• Weakness: CWE-20

Description

kernel/bpf/verifier.c in the Linux kernel through 4.14.8 ignores unreachable code, even though it would still be processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service.

Affected products

• Debian Linux: 9.0
• Linux kernel: through 4.14.8

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c131187db2d3fa2f8bf32fdf4e9a4ef805168467
• http://www.securityfocus.com/bid/102325
• http://www.securitytracker.com/id/1040057
• https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-fix-branch-pruning-logic.patch?h=stretch-security
• https://github.com/torvalds/linux/commit/c131187db2d3fa2f8bf32fdf4e9a4ef805168467
• https://usn.ubuntu.com/3619-1/
• https://usn.ubuntu.com/3619-2/
• https://usn.ubuntu.com/usn/usn-3523-2/
• https://www.debian.org/security/2017/dsa-4073
• https://www.spinics.net/lists/stable/msg206984.html
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c131187db2d3fa2f8bf32fdf4e9a4ef805168467
• http://www.securityfocus.com/bid/102325

Get alerted when CVE-2017-17862 or the next vulnerability affects your stack