The fuse_direct_io function in fs/fuse/file.c in the fuse subsystem in the Linux kernel before 2.6.32-rc7 might allow attackers to cause a…

Description

The fuse_direct_io function in fs/fuse/file.c in the fuse subsystem in the Linux kernel before 2.6.32-rc7 might allow attackers to cause a denial of service (invalid pointer dereference and OOPS) via vectors possibly related to a memory-consumption attack.

Scores

EPSS (exploitation in 30 days)

0.41% · top 64% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.9.

Weakness

• n/a
• CWE-399 (opens in a new tab)All about CWE-399 and its CVEs

Affected products

• n/a

  • affected n/a

References (20)

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f60311d5f7670d9539b424e4ed8b5c0872fc9e83 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7 (opens in a new tab)x_refsource_CONFIRMx_transferred
• SUSE-SA:2009:061 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• SUSE-SA:2010:001 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 37069 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• [oss-security] 20091119 CVE request: kernel: fuse: prevent fuse_put_request on invalid pointer (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• kernel-fusedirectio-dos(54358) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• http://support.avaya.com/css/P8/documents/100073666 (opens in a new tab)x_refsource_CONFIRMx_transferred
• SUSE-SA:2010:012 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 37909 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=538734 (opens in a new tab)x_refsource_CONFIRMx_transferred
• SUSE-SA:2009:064 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• oval:org.mitre.oval:def:6955 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• RHSA-2010:0095 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• oval:org.mitre.oval:def:10516 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• RHSA-2010:0046 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• DSA-2005 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• [oss-security] 20091124 Re: CVE request: kernel: fuse: prevent fuse_put_request on invalid pointer (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• RHSA-2010:0041 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 38017 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_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-2009-4021](https://trackcve.app/badge/CVE-2009-4021.svg)](https://trackcve.app/cve/CVE-2009-4021)

Record last updated 7 Aug 2024, 06:45 UTC.