kernel: Leakage of physical address mappings to non-privileged userspace
Published Mar 12, 2016
4.0
MEDIUMCVSS 3.0
EPSS 0.31%
Description
The pagemap_open function in fs/proc/task_mmu.c in the Linux kernel before 3.19.3, as used in Android 6.0.1 before 2016-03-01, allows local users to obtain sensitive physical-address information by reading a pagemap file, aka Android internal bug 25739721.
Affected products
No data.
Configuration 2
- ≤ 3.19.2
No data.
Red Hat Enterprise Linux 4
kernel
Not affected
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Will not fix
Red Hat Enterprise Linux 7
kernel
Will not fix
Red Hat Enterprise Linux 7
kernel-rt
Will not fix
Red Hat Enterprise MRG 2
realtime-kernel
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Will not fix | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5. This has been rated as having Low security impact and is not currently planned to be addressed in future updates of 6, 7, and MRG-2. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/ .
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.31% (0.00312) | 21.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.30% (0.00305) | 21.90th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.01% (0.00015) | 1.70th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00069) | 32.28th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.07% (0.00069) | 30.17th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00069) | 28.15th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (11)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ab676b7d6fbf4b294bf198fb27ade5b0e865c7ce x_refsource_CONFIRM
- http://googleprojectzero.blogspot.com/2015/03/exploiting-dram-rowhammer-bug-to-gain.html x_refsource_MISC
- http://source.android.com/security/bulletin/2016-03-01.html x_refsource_CONFIRMVendor Advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.3 x_refsource_CONFIRM
- http://www.securityfocus.com/bid/84265 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2016-0823 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1317576 Issue Tracking
- https://github.com/torvalds/linux/commit/ab676b7d6fbf4b294bf198fb27ade5b0e865c7ce x_refsource_CONFIRM
- https://googleprojectzero.blogspot.cz/2015/03/exploiting-dram-rowhammer-bug-to-gain.html
- https://nvd.nist.gov/vuln/detail/CVE-2016-0823
- https://www.cve.org/CVERecord?id=CVE-2016-0823
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ab676b7d6fbf4b294bf198fb27ade5b0e865c7ce | x_refsource_CONFIRM | |
| http://googleprojectzero.blogspot.com/2015/03/exploiting-dram-rowhammer-bug-to-gain.html | x_refsource_MISC | |
| http://source.android.com/security/bulletin/2016-03-01.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.3 | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/84265 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2016-0823 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1317576 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/ab676b7d6fbf4b294bf198fb27ade5b0e865c7ce | x_refsource_CONFIRM | |
| https://googleprojectzero.blogspot.cz/2015/03/exploiting-dram-rowhammer-bug-to-gain.html | ||
| https://nvd.nist.gov/vuln/detail/CVE-2016-0823 | ||
| https://www.cve.org/CVERecord?id=CVE-2016-0823 |
Change history (0)
No recorded changes yet.