CVE-2009-1883
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.
Does this matter?
Lower severity and a low EPSS score (0.34%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 4.4 MEDIUMAV:L/AC:M/Au:N/C:P/I:P/A:P
- EPSS
- 0.34% probability · 27th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
EPSS 0.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00007.html
- http://secunia.com/advisories/36759Vendor Advisory
- http://secunia.com/advisories/37105
- http://www.openwall.com/lists/oss-security/2009/09/15/1
- http://www.openwall.com/lists/oss-security/2009/09/15/3
- http://www.redhat.com/support/errata/RHSA-2009-1438.htmlVendor Advisory
- http://www.ubuntu.com/usn/USN-852-1
- https://bugzilla.redhat.com/show_bug.cgi?id=505983Vendor Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9513
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00007.html
- http://secunia.com/advisories/36759Vendor Advisory
- http://secunia.com/advisories/37105
- http://www.openwall.com/lists/oss-security/2009/09/15/1
- http://www.openwall.com/lists/oss-security/2009/09/15/3
- http://www.redhat.com/support/errata/RHSA-2009-1438.htmlVendor Advisory
- http://www.ubuntu.com/usn/USN-852-1
- https://bugzilla.redhat.com/show_bug.cgi?id=505983Vendor Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9513
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.