CVE-2009-0859: linux linux_kernel Improper Input Validation
Vulnerability summary
CVE-2009-0859 is a medium (CVSS 4.7) Improper Input Validation vulnerability in linux linux_kernel. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 30.5% of scored vulnerabilities.
Not severe (CVSS 4.7, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3Timeline
- 09-03-2009PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
Description
The shm_get_stat function in ipc/shm.c in the shm subsystem in the Linux kernel before 2.6.28.5, when CONFIG_SHMEM is disabled, misinterprets the data type of an inode, which allows local users to cause a denial of service (system hang) via an SHM_INFO shmctl call, as demonstrated by running the ipcs program.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
0.37%
Chance of exploitation in the next 30 days
Percentile
31%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.37% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication (CVSS vector). Other conditions: not stated in public data.
Linux1 product
- linux_kernel≤ 2.6.28.4
1 vendor · 1 product
References
22 links- git.kernel.orgX Refsource CONFIRM
- kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.5X Refsource CONFIRM
Show all 22 references
- patchwork.kernel.org/patch/6554/X Refsource CONFIRM