What’s Vulnerable › Vulnerabilities

CVE-2017-9059

• 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: 2017-05-18 · updated 2026-06-17
• Weakness: CWE-404

Description

The NFSv4 implementation in the Linux kernel through 4.11.1 allows local users to cause a denial of service (resource consumption) by leveraging improper channel callback shutdown when unmounting an NFSv4 filesystem, aka a "module reference and kernel daemon" leak.

Affected products

• Linux kernel: through 4.11.1

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c70422f760c120480fee4de6c38804c72aa26bc1
• http://www.securityfocus.com/bid/98551
• https://bugzilla.redhat.com/show_bug.cgi?id=1451386
• https://github.com/torvalds/linux/commit/c70422f760c120480fee4de6c38804c72aa26bc1
• https://www.spinics.net/lists/linux-nfs/msg63334.html
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c70422f760c120480fee4de6c38804c72aa26bc1
• http://www.securityfocus.com/bid/98551
• https://bugzilla.redhat.com/show_bug.cgi?id=1451386
• https://github.com/torvalds/linux/commit/c70422f760c120480fee4de6c38804c72aa26bc1
• https://www.spinics.net/lists/linux-nfs/msg63334.html

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