What is CVE-2010-2538?

CVE-2010-2538 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.5/10. Published 2010-09-30.

How severe is CVE-2010-2538?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Information disclosure in Linux Kernel

CVE-2010-2538

Integer overflow in the btrfs_ioctl_clone function in fs/btrfs/ioctl.c in the Linux kernel before 2.6.35 might allow local users to obtain sensitive information via a BTRFS_IOC_CLONE_RANGE ioctl call.

Vulnerability class: Information Disclosure

Published 2010-09-30 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (30.4th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Linux Kernel
Canonical Ubuntu Linux — versions 10.04, 9.10, 10.10
SUSE Linux Enterprise Desktop — versions 11
SUSE Linux Enterprise High Availability Extension — versions 11
SUSE Linux Enterprise Server — versions 11

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

www.securityfocus.com/bid/41854 (VDB Entry, Third Party Advisory, vdb-entry)
www.ubuntu.com/usn/USN-1041-1 (vendor-advisory, Third Party Advisory)
www.openwall.com/lists/oss-security/2010/07/21/10 (mailing-list, Patch, Mailing List, Third Party Advisory)
lists.opensuse.org/opensuse-security-announce/2010-09/msg00004.html (vendor-advisory, Mailing List, Third Party Advisory)
www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35 (Broken Link)
secunia.com/advisories/42758 (Broken Link, third-party-advisory)
bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
git.kernel.org/
www.vupen.com/english/advisories/2011/0070 (vdb-entry, Broken Link)
www.openwall.com/lists/oss-security/2010/07/21/4 (mailing-list, Patch, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2010-2538?: CVE-2010-2538 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.5/10. Published 2010-09-30.
How severe is CVE-2010-2538?: Medium severity. CVSS v3 base score is 5.5 out of 10.