漏洞描述
The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging incorrect sign extension.
影响产品
修复建议
建议关注厂商安全公告，及时升级至已修复版本，并结合实际资产暴露情况采取缓解措施。
参考链接
openwall.comhttp://openwall.com/lists/oss-security/2017/12/21/2↗usn.ubuntu.comhttps://usn.ubuntu.com/3633-1/↗www.securityfocus.comhttp://www.securityfocus.com/bid/102288↗www.debian.orghttps://www.debian.org/security/2017/dsa-4073↗git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95a762e2c8c942780948091f8f2a4f32fce1ac6f↗usn.ubuntu.comhttps://usn.ubuntu.com/3619-1/↗usn.ubuntu.comhttps://usn.ubuntu.com/usn/usn-3523-2/↗usn.ubuntu.comhttps://usn.ubuntu.com/3619-2/↗bugs.chromium.orghttps://bugs.chromium.org/p/project-zero/issues/detail?id=1454↗git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=a6132276ab5dcc38b3299082efeb25b948263adb↗github.comhttps://github.com/torvalds/linux/commit/95a762e2c8c942780948091f8f2a4f32fce1ac6f↗