CVE-2007-2453

Linux kernel <2.6.20.13, 2.6.21.x <2.6.21.4 - Info Disclosure

Title source: llm

Description

The random number feature in Linux kernel 2.6 before 2.6.20.13, and 2.6.21.x before 2.6.21.4, (1) does not properly seed pools when there is no entropy, or (2) uses an incorrect cast when extracting entropy, which might cause the random number generator to provide the same values after reboots on systems without an entropy source.

References (27)

[Patch] http://marc.info/?l=linux-kernel&m=118128610219959&w=2

[Patch] http://marc.info/?l=linux-kernel&m=118128622431272&w=2

[Vendor Advisory] http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.4

[Vendor Advisory] http://www.mandriva.com/security/advisories?name=MDKSA-2007:171

[Vendor Advisory] http://www.mandriva.com/security/advisories?name=MDKSA-2007:196

[Vendor Advisory] http://www.mandriva.com/security/advisories?name=MDKSA-2007:216

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/24390

[Vendor Advisory] http://www.ubuntu.com/usn/usn-470-1

[Vendor Advisory] http://www.ubuntu.com/usn/usn-486-1

[Vendor Advisory] http://www.ubuntu.com/usn/usn-489-1

[Third Party Advisory, VDB Entry] https://exchange.xforce.ibmcloud.com/vulnerabilities/34781

[Vendor Advisory] https://rhn.redhat.com/errata/RHSA-2007-0376.html

[Vendor Advisory] http://www.novell.com/linux/security/advisories/2007_43_kernel.html

[Vendor Advisory] http://www.novell.com/linux/security/advisories/2007_51_kernel.html

[Third Party Advisory] http://www.debian.org/security/2007/dsa-1356

[Third Party Advisory, VDB Entry] http://osvdb.org/37114

[Third Party Advisory, VDB Entry] https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9960

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id?1018248

[Third Party Advisory] http://secunia.com/advisories/25596

[Third Party Advisory] http://secunia.com/advisories/25700

... and 7 more

Scores

EPSS 0.0011

EPSS Percentile 29.1%

Classification

Status draft

Affected Products (50)

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

linux/linux_kernel

... and 35 more

Timeline

Published Jun 11, 2007

Tracked Since Feb 18, 2026