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CVE-2009-1243

Date: April 6, 2009

net/ipv4/udp.c in the Linux kernel before 2.6.29.1 performs an unlocking step in certain incorrect circumstances, which allows local users to cause a denial of service (panic) by reading zero bytes from the /proc/net/udp file and unspecified other files, related to the "udp seq_file infrastructure."

Language: C

Severity Score

Related Resources (10)

http://secunia.com/advisories/34478
https://exchange.xforce.ibmcloud.com/vulnerabilities/49595
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=30842f2989aacfaba3ccb39829b3417be9313dbe
http://openwall.com/lists/oss-security/2009/04/01/4
http://www.securityfocus.com/bid/34329
https://nvd.nist.gov/vuln/detail/CVE-2009-1243
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1
http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-proc-net-udp-8586
http://www.vupen.com/english/advisories/2009/0924
https://www.mend.io/vulnerability-database/CVE-2009-1243

Severity Score

Weakness Type (CWE)

Configuration

CWE-16

Improper Input Validation

CWE-20

Improper Locking

CWE-667

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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