Use-after-free vulnerability in the fasync_helper function in fs/fcntl.c in the Linux kernel before 2.6.33-rc4-git1 allows local users to…

Description

Use-after-free vulnerability in the fasync_helper function in fs/fcntl.c in the Linux kernel before 2.6.33-rc4-git1 allows local users to gain privileges via vectors that include enabling O_ASYNC (aka FASYNC or FIOASYNC) on a locked file, and then closing this file.

Scores

EPSS (exploitation in 30 days)

0.97% · top 38% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.

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 (16)

• http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.33-rc4-git1.bz2 (opens in a new tab)x_refsource_CONFIRMx_transferred
• oval:org.mitre.oval:def:9201 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• 37806 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• http://twitter.com/taviso/statuses/7744108017 (opens in a new tab)x_refsource_MISCx_transferred
• http://support.avaya.com/css/P8/documents/100073666 (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=53281b6d34d44308372d16acb7fb5327609f68b6 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20100114 Locked fasync file descriptors can be referenced after free in >= 2.6.28 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
• oval:org.mitre.oval:def:7054 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=547906 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 39033 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://lock.cmpxchg8b.com/5ebe2294ecd0e0f08eab7690d2a6ee69/create_elf_tables.c (opens in a new tab)x_refsource_MISCx_transferred
• 38199 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• RHSA-2010:0095 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2010:0046 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• SUSE-SA:2010:010 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• RHSA-2010:0161 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_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-2009-4141](https://trackcve.app/badge/CVE-2009-4141.svg)](https://trackcve.app/cve/CVE-2009-4141)

Record last updated 7 Aug 2024, 06:54 UTC.