CVE-2017-16995

Summary

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.

Affected Software

Weaknesses

• incorrect sign extension

ADP Enrichment

CVE Program Container

Additional References

• https://www.exploit-db.com/exploits/45058/
• https://github.com/torvalds/linux/commit/95a762e2c8c942780948091f8f2a4f32fce1ac6f
• https://usn.ubuntu.com/3619-2/
• https://bugs.chromium.org/p/project-zero/issues/detail?id=1454
• https://usn.ubuntu.com/3633-1/
• http://www.securityfocus.com/bid/102288
• https://www.exploit-db.com/exploits/44298/
• https://www.exploit-db.com/exploits/45010/
• https://www.debian.org/security/2017/dsa-4073
• https://usn.ubuntu.com/usn/usn-3523-2/
• http://openwall.com/lists/oss-security/2017/12/21/2
• https://usn.ubuntu.com/3619-1/
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95a762e2c8c942780948091f8f2a4f32fce1ac6f
• https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=a6132276ab5dcc38b3299082efeb25b948263adb

References

• https://www.exploit-db.com/exploits/45058/
• https://github.com/torvalds/linux/commit/95a762e2c8c942780948091f8f2a4f32fce1ac6f
• https://usn.ubuntu.com/3619-2/
• https://bugs.chromium.org/p/project-zero/issues/detail?id=1454
• https://usn.ubuntu.com/3633-1/
• http://www.securityfocus.com/bid/102288
• https://www.exploit-db.com/exploits/44298/
• https://www.exploit-db.com/exploits/45010/
• https://www.debian.org/security/2017/dsa-4073
• https://usn.ubuntu.com/usn/usn-3523-2/
• http://openwall.com/lists/oss-security/2017/12/21/2
• https://usn.ubuntu.com/3619-1/
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95a762e2c8c942780948091f8f2a4f32fce1ac6f
• https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=a6132276ab5dcc38b3299082efeb25b948263adb

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