CVE-2007-2453 json
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 i…
published 2007-06-11 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-2446
- cvss
- 1.2
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- kernel RHEL 5 2.6.18-8.1.6.el5
- kernel-PAE RHEL 5 2.6.18-8.1.6.el5
- kernel-xen RHEL 5 2.6.18-8.1.6.el5
- kernel-kdump RHEL 5 2.6.18-8.1.6.el5
- kernel-debuginfo-common RHEL 5 2.6.18-8.1.6.el5
red hat advisories RHSA-2007:0376
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2007-2453 updated
/dev/random broken
-
Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-8.1.6.el5, kernel-PAE 2.6.18-8.1.6.el5, kernel-xen 2.6.18-8.1.6.el5, kernel-kdump 2.6.18-8.1.6.el5, kernel-debuginfo-common 2.6.18-8.1.6.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-8.1.6.el5, kernel-PAE 2.6.18-8.1.6.el5, kernel-xen 2.6.18-8.1.6.el5, kernel-kdump 2.6.18-8.1.6.el5, kernel-debuginfo-common 2.6.18-8.1.6.el5fixed: vendor fix RHSA-2007:0376
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 1.2 | AV:L/AC:H/Au:N/C:P/I:N/A:N |
Classification
- Technology feeds
References
-
marc.info
/?l=linux-kernel&m=118128622431272&w=2
mailing-list, patch
-
marc.info
/?l=linux-kernel&m=118128610219959&w=2
mailing-list, patch
-
ubuntu.com
/usn/usn-470-1
vendor-advisory
-
novell.com
/linux/security/advisories/2007_51_kernel.html
vendor-advisory
-
novell.com
/linux/security/advisories/2007_43_kernel.html
vendor-advisory
-
mandriva.com
/security/advisories?name=MDKSA-2007:171
vendor-advisory
-
debian.org
/security/2007/dsa-1356
vendor-advisory
-
mandriva.com
/security/advisories?name=MDKSA-2007:216
vendor-advisory
-
ubuntu.com
/usn/usn-489-1
vendor-advisory
-
mandriva.com
/security/advisories?name=MDKSA-2007:196
vendor-advisory
-
rhn.redhat.com
/errata/RHSA-2007-0376.html
vendor-advisory
-
ubuntu.com
/usn/usn-486-1
vendor-advisory
-
securitytracker.com
/id?1018248
vdb-entry
-
secunia.com
/advisories/26664
third-party-advisory
-
vupen.com
/english/advisories/2007/2105
vdb-entry
-
securityfocus.com
/bid/24390
vdb-entry
-
exchange.xforce.ibmcloud.com
/vulnerabilities/34781
vdb-entry
-
secunia.com
/advisories/26620
third-party-advisory
-
secunia.com
/advisories/25961
third-party-advisory
-
osvdb.org
/37114
vdb-entry
-
secunia.com
/advisories/25596
third-party-advisory
-
secunia.com
/advisories/26450
third-party-advisory
- kernel.org /pub/linux/kernel/v2.6/ChangeLog-2.6.21.4
-
secunia.com
/advisories/25700
third-party-advisory
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9960
vdb-entry, signature
-
secunia.com
/advisories/26139
third-party-advisory
-
secunia.com
/advisories/26133
third-party-advisory
Sources
- CVE List CVE-2007-2453
- NVD CVE-2007-2453
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