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Vulnerability record · CVE-2009-2846 · published 18 August 2009

CVE-2009-2846: Linux kernel permissions and access controls vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 2.0 High EPSS 8.2% · top 5.3% CWE-264 · Permissions and access controls
7.8CVSS 2.0 base score
8.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References
16 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=6b4dbcd86a9d464057fcc7abe4d057409307
http://secunia.com/advisories/37105
http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
http://www.openwall.com/lists/oss-security/2009/08/10/1 Patch
http://www.openwall.com/lists/oss-security/2009/08/18/6 Patch
http://www.ubuntu.com/usn/USN-852-1
https://exchange.xforce.ibmcloud.com/vulnerabilities/52906
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=6b4dbcd86a9d464057fcc7abe4d057409307
http://secunia.com/advisories/37105
http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
http://www.openwall.com/lists/oss-security/2009/08/10/1 Patch
http://www.openwall.com/lists/oss-security/2009/08/18/6 Patch
http://www.ubuntu.com/usn/USN-852-1
https://exchange.xforce.ibmcloud.com/vulnerabilities/52906

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Source: NIST National Vulnerability Database (record CVE-2009-2846), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.