CVE-2009-1883 Missing authorization in n/a

What is CVE-2009-1883?

CVE-2009-1883 is a medium-severity missing authorization vulnerability in Linux kernel, published on 18 Sep 2009. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The z90crypt_unlocked_ioctl function in the z90crypt driver in the Linux kernel 2.6.9 does not perform a capability check for the Z90QUIESCE operation, which allows local users to leverage euid 0 privileges to force a driver outage.

Weakness: CWE-264

Which versions are affected by CVE-2009-1883?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2009-1883?

Apply the vendor's patch.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2009-1883 being exploited?

There is no known exploitation of CVE-2009-1883 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-h3m4-w364-g2gg.