kernel ecryptfs NULL pointer dereference
Published Oct 13, 2009
4.9
MEDIUMCVSS 2.0
EPSS 1.24%
Description
The d_delete function in fs/ecryptfs/inode.c in eCryptfs in the Linux kernel 2.6.31 allows local users to cause a denial of service (kernel OOPS) and possibly execute arbitrary code via unspecified vectors that cause a "negative dentry" and trigger a NULL pointer dereference, as demonstrated via a Mutt temporary directory in an eCryptfs mount.
Affected products
No data.
- 2.6.31
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-164.6.1.el5
Fixed · RHSA-2009:1548
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-164.6.1.el5 | Fixed | RHSA-2009:1548 |
No package ranges for this CVE.
Remediation
Red Hat statement
The Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, and Red Hat Enterprise MRG do not include support for eCryptfs, and therefore are not affected by this issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.24% (0.01243) | 68.18th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.22% (0.01223) | 64.74th | v5 (v2026.06.15) |
| Feb 12, 2026 | 2.96% (0.02956) | 86.15th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.88% (0.01876) | 72.12th | v4 (v2025.03.14) |
| Mar 19, 2025 | 3.14% (0.03135) | 85.38th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.31% (0.04308) | 88.13th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.27th | v2 (v2022.01.01) |
| Feb 13, 2023 | 2.17% (0.02172) | 79.78th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.55% (0.01547) | 74.40th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.34th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.15th | v2 (v2022.01.01) |
References (20)
- http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.31.y.git%3Ba=commit%3Bh=afc2b6932f48f200736d3e36ad66fee0ec733136 x_refsource_CONFIRM
- http://lists.vmware.com/pipermail/security-announce/2010/000082.html mailing-listx_refsource_MLIST
- http://secunia.com/advisories/37075 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/37105 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/38794 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/38834 third-party-advisoryx_refsource_SECUNIA
- http://www.openwall.com/lists/oss-security/2009/10/06/1 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/36639 vdb-entryx_refsource_BIDPatch
- http://www.ubuntu.com/usn/USN-852-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2010/0528 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2009-2908 Vendor Advisory
- https://bugs.launchpad.net/ecryptfs/+bug/387073 x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=527534 x_refsource_CONFIRMIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53693 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2009-2908
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10216 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6992 vdb-entrysignaturex_refsource_OVAL
- https://rhn.redhat.com/errata/RHSA-2009-1548.html vendor-advisoryx_refsource_REDHAT
- https://www.cve.org/CVERecord?id=CVE-2009-2908
- https://www.redhat.com/archives/fedora-package-announce/2009-October/msg00483.html vendor-advisoryx_refsource_FEDORA
Change history (0)
No recorded changes yet.