High severity · published Jan 27, 2010
CVE-2009-4272
A certain Red Hat patch for net/ipv4/route.c in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 allows remote attackers to cause a denial of service (deadlock) via…
7.5
CVSS
11.1%
EPSS
No
On KEV
Description
A certain Red Hat patch for net/ipv4/route.c in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 allows remote attackers to cause a denial of service (deadlock) via crafted packets that force collisions in the IPv4 routing hash table, and trigger a routing "emergency" in which a hash chain is too long. NOTE: this is related to an issue in the Linux kernel before 2.6.31, when the kernel routing cache is disabled, involving an uninitialized pointer and a panic.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)11.1% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
2.6.18 · source: NVD
EL
Enterprise Linux Desktop · Redhat
5.0 · source: NVD
EL
Enterprise Linux Eus · Redhat
5.4 · source: NVD
EL
Enterprise Linux Server · Redhat
5.0 · source: NVD
EL
Enterprise Linux Workstation · Redhat
5.0 · source: NVD
VI
Virtualization · Redhat
5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2009-4272
CVE.org
https://www.cve.org/CVERecord?id=CVE-2009-4272
Broken Link
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=73e42897e8e5619eacb787d2ce69be12f47cfc21
Broken Link
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b6280b47a7a42970d098a3059f4ebe7e55e90d8d
Third Party Advisory
http://support.avaya.com/css/P8/documents/100073666
Broken Link
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31
Mailing List
http://www.openwall.com/lists/oss-security/2010/01/20/1
Mailing List
http://www.openwall.com/lists/oss-security/2010/01/20/6
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