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Fencer Vulns
medium 4.9

CVE-2009-0787 json

The ecryptfs_write_metadata_to_contents function in the eCryptfs functionality in the Linux kernel 2.6.28 before 2.6.28.9 uses an incorrect…

published 2009-03-25 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-0785

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

The ecryptfs_write_metadata_to_contents function in the eCryptfs functionality in the Linux kernel 2.6.28 before 2.6.28.9 uses an incorrect size when writing kernel memory to an eCryptfs file header, which triggers an out-of-bounds read and allows local users to obtain portions of kernel memory.

Patch / fix

  • kernel RHEL 5 2.6.18-128.1.10.el5
  • kernel-PAE RHEL 5 2.6.18-128.1.10.el5
  • kernel-xen RHEL 5 2.6.18-128.1.10.el5
  • kernel-kdump RHEL 5 2.6.18-128.1.10.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-128.1.10.el5

red hat advisories RHSA-2009:0473

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-0787 updated cvss 1.9

kernel: ecryptfs file header infoleak

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-128.1.10.el5, kernel-PAE 2.6.18-128.1.10.el5, kernel-xen 2.6.18-128.1.10.el5, kernel-kdump 2.6.18-128.1.10.el5, kernel-debuginfo-common 2.6.18-128.1.10.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-128.1.10.el5, kernel-PAE 2.6.18-128.1.10.el5, kernel-xen 2.6.18-128.1.10.el5, kernel-kdump 2.6.18-128.1.10.el5, kernel-debuginfo-common 2.6.18-128.1.10.el5
    fixed: vendor fix RHSA-2009:0473

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:C/I:N/A:N

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.