#VU92827 Out-of-bounds write in Linux kernel - CVE-2010-1451

Vulnerability identifier: #VU92827

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2010-1451

CWE-ID: CWE-787

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to manipulate data.

The TSB I-TLB load implementation in arch/sparc/kernel/tsb.S in the Linux kernel before 2.6.33 on the SPARC platform does not properly obtain the value of a certain _PAGE_EXEC_4U bit and consequently does not properly implement a non-executable stack, which makes it easier for context-dependent attackers to exploit stack-based buffer overflows via a crafted application.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://marc.info/?l=linux-sparc&m=126662159602378&w=2
https://marc.info/?l=linux-sparc&m=126662196902830&w=2
https://secunia.com/advisories/39830
https://www.debian.org/security/2010/dsa-2053
https://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.33
https://www.openwall.com/lists/oss-security/2010/02/24/1
https://www.openwall.com/lists/oss-security/2010/05/05/2

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.