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CVE-2009-2406

Stack-based buffer overflow in the parse_tag_11_packet function in fs/ecryptfs/keystore.c in the...

6.9 Medium

CVE-2009-2406 is a medium vulnerability (CVSS 6.9) in Linux Kernel, published June 28, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.50%, the 43rd percentile. No source names a fixed version.

What does this mean?
Severity
6.9 MediumCVSS 2.0, NVD
Exploit chance
0.50%EPSS, 43rd percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

Stack-based buffer overflow in the parse_tag_11_packet function in fs/ecryptfs/keystore.c in the eCryptfs subsystem in the Linux kernel before 2.6.30.4 allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving a crafted eCryptfs file, related to not ensuring that the key signature length in a Tag 11 packet is compatible with the key signature buffer size.

Exploit likelihood

0.50%Down 1.0 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
linux-2.6.24
Debian:4.0
From an advisory covering 9 CVEs
before 2.6.24-6~etchnhalf.8etch2, plus listed versions
2.6.24-5~etchnhalf.12.6.24-6~etchnhalf.12.6.24-6~etchnhalf.22.6.24-6~etchnhalf.32.6.24-6~etchnhalf.4
Show 5 moreShow less
2.6.24-6~etchnhalf.52.6.24-6~etchnhalf.62.6.24-6~etchnhalf.72.6.24-6~etchnhalf.82.6.24-6~etchnhalf.8etch1
2.6.24-6~etchnhalf.8etch2
linux-2.6
Debian:5.0
From an advisory covering 4 CVEs
before 2.6.26-17lenny1, plus listed versions
2.6.26-132.6.26-13lenny22.6.26-13lenny2~bpo40+12.6.26-142.6.26-15
Show 8 moreShow less
2.6.26-15lenny12.6.26-15lenny22.6.26-15lenny32.6.26-15~bpo40+12.6.26-15~bpo40+22.6.26-162.6.26-172.6.26-17~bpo40+1
2.6.26-17lenny1
kernel
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
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Affected packages
PackageAffectedFixed
kernel-debuginfo-common
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-doc
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-headers
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-debuginfo
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-devel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-debuginfo
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-devel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debuginfo
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debuginfo-common
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-devel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-doc
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-headers
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump-debuginfo
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump-devel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-debuginfo
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-devel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debuginfo-common
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-doc
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-headers
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5

What each source reports

NVD Score used6.9

Stack-based buffer overflow in the parse_tag_11_packet function in fs/ecryptfs/keystore.c in the eCryptfs subsystem in the Linux kernel before 2.6.30.4 allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving a crafted eCryptfs file, related to not ensuring that the key signature length in a Tag 11 packet is compatible with the key signature buffer size.

Record
CVE-2009-2406
CVSS 2.0
6.9 MediumAV:L/AC:M/Au:N/C:C/I:C/A:C
Weakness
CWE-119
Updated
2026-11-02
CVE ListNo score

Stack-based buffer overflow in the parse_tag_11_packet function in fs/ecryptfs/keystore.c in the eCryptfs subsystem in the Linux kernel before 2.6.30.4 allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving a crafted eCryptfs file, related to not ensuring that the key signature length in a Tag 11 packet is compatible with the key signature buffer size.

Record
CVE-2009-2406
Updated
2026-11-02
EUVDEUVD-2009-2402No score

Stack-based buffer overflow in the parse_tag_11_packet function in fs/ecryptfs/keystore.c in the eCryptfs subsystem in the Linux kernel before 2.6.30.4 allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving a crafted eCryptfs file, related to not ensuring that the key signature length in a Tag 11 packet is compatible with the key signature buffer size.

Record
EUVD-2009-2402
Updated
2026-11-03
GitHub AdvisoriesGHSA-86jh-hvhg-x8w9No score

Stack-based buffer overflow in the parse_tag_11_packet function in fs/ecryptfs/keystore.c in the...

Stack-based buffer overflow in the parse_tag_11_packet function in fs/ecryptfs/keystore.c in the eCryptfs subsystem in the Linux kernel before 2.6.30.4 allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving a crafted eCryptfs file, related to not ensuring that the key signature length in a Tag 11 packet is compatible with the key signature buffer size.

Record
GHSA-86jh-hvhg-x8w9
Weakness
CWE-119
Updated
2026-11-02

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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