CVE-2009-2846

7.8 HIGH 8% exploit odds Fix listed Memory safety OS & kernel

What it is

The eisa_eeprom_read function in the parisc isa-eeprom component (drivers/parisc/eisa_eeprom.c) in the Linux kernel before 2.6.31-rc6 allows local users to access restricted memory via a negative ppos argument, which bypasses a check that assumes that ppos is positive and causes an out-of-bounds read in the readb function.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure.
Exploit odds: 8.2% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2009-08-18 21:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:10 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 8.2% in the next 30 days (EPSS).
Severity: 7.8 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2009-08-18 21:00 UTC
Last modified: 2026-06-16 23:10 UTC
Exploit probability: 8.2% · EPSS, next 30 days
Weakness: CWE-264
Record status: Modified

Affected

Linux Kernel ≤ 2.6.31
Linux Kernel 2.6.0
Linux Kernel 2.6.1
Linux Kernel 2.6.2
Linux Kernel 2.6.3
Linux Kernel 2.6.4
Linux Kernel 2.6.5
Linux Kernel 2.6.6

Attack profile CVSS 2.0 · 7.8

Attack vector: Network
Complexity: Low
Authentication: None
Confidentiality: Complete
Integrity: None
Availability: None

Raw vector

AV:N/AC:L/Au:N/C:C/I:N/A:N

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2009-2846.md and follow it. Check whether this project is affected by CVE-2009-2846. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record