CVE-2009-1243

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 18.8% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-16.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2009-04-06 14:00Z17 YR AGO

Last updated

2024-08-07 05:04Z2 YR AGO

Reserved

2009-04-06

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-667Improper LockingClass

Data version

5.1

Document digest

3423926ee36559439aac9f8d819994e63110cebfea8549aa90f873a0ea2bbaa8

• www.kernel.orghttp://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1x_refsource_CONFIRM
• secunia.com34478http://secunia.com/advisories/34478third-party-advisoryx_refsource_SECUNIA
• openwall.com[oss-security] 20090401 CVE request: kernel: udp: Wrong locking code in udp seq_file infrastructurehttp://openwall.com/lists/oss-security/2009/04/01/4mailing-listx_refsource_MLIST
• www.securityfocus.com34329http://www.securityfocus.com/bid/34329vdb-entryx_refsource_BID
• exchange.xforce.ibmcloud.comlinux-kernel-procnetudp-dos(49595)https://exchange.xforce.ibmcloud.com/vulnerabilities/49595vdb-entryx_refsource_XF
• git.kernel.orghttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=30842f2989aacfaba3ccb39829b3417be9313dbex_refsource_CONFIRM
• vigilance.frhttp://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-proc-net-udp-8586x_refsource_MISC
• www.vupen.comADV-2009-0924http://www.vupen.com/english/advisories/2009/0924vdb-entryx_refsource_VUPEN