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CVE-2009-1895

N/A
Published: July 16, 2009 at 03:00 PM UTC
Updated: June 16, 2026 at 11:08 PM UTC
3 products affected across 3 vendorsLinux KernelDebian LinuxUbuntu Linux

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Severity
N/A
Exploit prediction
EPSS 0.4%

Description

The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to (1) conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr protection mechanism, or (3) defeat address space layout randomization (ASLR).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (35)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
http://blog.cr0.org/2009/06/bypassing-linux-null-pointer.html
x_refsource_CONFIRM
Source: [email protected]
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f9fabcb58a6d26d6efde842d1703ac7cfa9427b6
x_refsource_CONFIRMPatchVendor Advisory
Source: [email protected]
http://patchwork.kernel.org/patch/32598/
Third Party Advisoryx_refsource_SECUNIA
Source: [email protected]
http://secunia.com/advisories/35801
Third Party Advisoryx_refsource_SECUNIA
Source: [email protected]
http://secunia.com/advisories/36045
Third Party Advisoryx_refsource_SECUNIA
Source: [email protected]
http://secunia.com/advisories/36051
Third Party Advisoryx_refsource_SECUNIA
Source: [email protected]
http://secunia.com/advisories/36054
Third Party Advisoryx_refsource_SECUNIA
Source: [email protected]
http://secunia.com/advisories/36116

CVSS

7.2HIGH[email protected]
Confidentiality
COMPLETE
Integrity
COMPLETE
Availability
COMPLETE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-16

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