CVE-2009-2846

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-08-18 · updated 2026-06-16
Weakness: CWE-264

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.

Affected products

Linux kernel: through 2.6.31; 2.6.0, 2.6.1, 2.6.2, 2.6.3, 2.6.4, 2.6.5 (+309)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=6b4dbcd86a9d464057fcc7abe4d0574093071fcc
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
http://www.openwall.com/lists/oss-security/2009/08/18/6
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=6b4dbcd86a9d464057fcc7abe4d0574093071fcc
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
http://www.openwall.com/lists/oss-security/2009/08/18/6

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