The mm_for_maps function in fs/proc/base.c in the Linux kernel 2.6.30.4 and earlier allows local users to read (1) maps and (2) smaps…

Description

The mm_for_maps function in fs/proc/base.c in the Linux kernel 2.6.30.4 and earlier allows local users to read (1) maps and (2) smaps files under proc/ via vectors related to ELF loading, a setuid process, and a race condition.

Scores

EPSS (exploitation in 30 days)

0.39% · top 66% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.1.

Weakness

• n/a
• CWE-200 (opens in a new tab)All about CWE-200 and its CVEs

Affected products

• n/a

  • affected n/a

References (17)

• [linux-kernel] 20090623 [PATCH 1/1] mm_for_maps: simplify, use ptrace_may_access() (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• 36265 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• [linux-kernel] 20090623 [PATCH 0/1] mm_for_maps: simplify, use ptrace_may_access() (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=516171 (opens in a new tab)x_refsource_CONFIRMx_transferred
• RHSA-2009:1540 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 36019 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=00f89d218523b9bf6b522349c039d5ac80aa536d (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=704b836cbf19e885f8366bccb2e4b0474346c02d (opens in a new tab)x_refsource_CONFIRMx_transferred
• [oss-security] 20090811 CVE-2009-2691 kernel: /proc/$pid/maps visible during initial setuid ELF loading (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [linux-kernel] 20090710 [PATCH 1/2] mm_for_maps: shift down_read(mmap_sem) to the caller (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• FEDORA-2009-9044 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• ADV-2009-2246 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=13f0feafa6b8aead57a2a328e2fca6a5828bf286 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 36501 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• DSA-2005 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• linux-kernel-mmformaps-info-disclosure(52401) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• [linux-kernel] 20090710 [PATCH 2/2] mm_for_maps: take ->cred_guard_mutex to fix the race (opens in a new tab)mailing-listx_refsource_MLISTx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2009-2691](https://trackcve.app/badge/CVE-2009-2691.svg)](https://trackcve.app/cve/CVE-2009-2691)

Record last updated 7 Aug 2024, 05:59 UTC.