kernel: Information leak when truncating of compressed/inlined extents on BTRFS
Published Dec 28, 2015
4.0
MEDIUMCVSS 3.0
EPSS 0.50%
Description
fs/btrfs/inode.c in the Linux kernel before 4.3.3 mishandles compressed inline extents, which allows local users to obtain sensitive pre-truncation information from a file via a clone action.
Affected products
No data.
- ≤ 4.3.2
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-514.el7
Fixed · RHSA-2016:2574
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-514.rt56.420.el7
Fixed · RHSA-2016:2584
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Will not fix
Red Hat Enterprise MRG 2
realtime-kernel
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-514.el7 | Fixed | RHSA-2016:2574 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-514.rt56.420.el7 | Fixed | RHSA-2016:2584 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Will not fix | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 as the code with the flaw is not present in the products listed. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6 and is not currently planned to be addressed in future updates. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2. Future Linux kernel updates for the respective releases might address this issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
AV:L/AC:L/Au:N/C:P/I:N/A:N
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 1, 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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.50% (0.00501) | 40.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.51% (0.00505) | 38.94th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00035) | 6.80th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.14% (0.00144) | 51.78th | v3 (v2023.03.01) |
| Jul 12, 2023 | 0.14% (0.00144) | 49.41th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00101) | 39.96th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (24)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0305cd5f7fca85dae392b9ba85b116896eb7c1c7 x_refsource_CONFIRMVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2574.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2016-2584.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2015/dsa-3426 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2015/11/27/2 mailing-listx_refsource_MLIST
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/78219 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1034895 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2886-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2887-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2887-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2888-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2889-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2889-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2890-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2890-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2890-3 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-8374 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1286261 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/0305cd5f7fca85dae392b9ba85b116896eb7c1c7 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2015-8374
- https://www.cve.org/CVERecord?id=CVE-2015-8374
Change history (0)
No recorded changes yet.