Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +12 | 2.6.18-128.1.10.el5 | RHSA-2009:0473 |
Advisories 1
- RHSA-2009:0473 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- 34422 third-party-advisory
- 52860 vdb-entry
- linux-kernel-ecryptfs-information-disclosure(49355) vdb-entry
- ADV-2009-0802 vdb-entry
- 37471 third-party-advisory
- 1022177 vdb-entry
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=8faece5f906725c10e7a1f6caf84452abadbdc7b
- 34216 vdb-entry
- 35015 third-party-advisory
- 20091120 VMSA-2009-0016 VMware vCenter and ESX update release and vMA patch release address multiple security issue in third party components mailing-list
- oval:org.mitre.oval:def:8319 vdb-entry signature
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.9
- oval:org.mitre.oval:def:11068 vdb-entry signature
- RHSA-2009:0473 vendor-advisory
- ADV-2009-3316 vdb-entry