kernel: mm: avoid wrapping vm_pgoff in mremap() and stack expansions
Published Jun 13, 2012
4.9
MEDIUMCVSS 2.0
EPSS 0.49%
Description
Integer overflow in the vma_to_resize function in mm/mremap.c in the Linux kernel before 2.6.39 allows local users to cause a denial of service (BUG_ON and system crash) via a crafted mremap system call that expands a memory mapping.
Affected products
No data.
- ≤ 2.6.38.8
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38
- 2.6.38.1
- 2.6.38.2
- 2.6.38.3
- 2.6.38.4
- 2.6.38.5
- 2.6.38.6
- 2.6.38.7
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-274.7.1.el5
Fixed · RHSA-2011:1386
Red Hat Enterprise Linux 6
kernel-0:2.6.32-131.17.1.el6
Fixed · RHSA-2011:1350
Red Hat Enterprise MRG 2
kernel-rt-0:2.6.33.9-rt31.75.el6rt
Fixed · RHSA-2011:1253
Red Hat Enterprise Linux 4
kernel
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-274.7.1.el5 | Fixed | RHSA-2011:1386 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-131.17.1.el6 | Fixed | RHSA-2011:1350 |
| Red Hat Enterprise MRG 2 | kernel-rt-0:2.6.33.9-rt31.75.el6rt | Fixed | RHSA-2011:1253 |
| Red Hat Enterprise Linux 4 | kernel | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:C
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.49% (0.00487) | 39.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.49% (0.00487) | 37.87th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.15% (0.00151) | 33.12th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Feb 13, 2023 | 0.95% (0.00950) | 31.86th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.28% (0.01282) | 67.60th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
References (8)
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39 x_refsource_CONFIRM
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=982134ba62618c2d69fbbbd166d0a11ee3b7e3d8 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2011/06/27/2 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2011-2496 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=716538 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/982134ba62618c2d69fbbbd166d0a11ee3b7e3d8 x_refsource_CONFIRMExploitPatch
- https://nvd.nist.gov/vuln/detail/CVE-2011-2496
- https://www.cve.org/CVERecord?id=CVE-2011-2496
| Link | Providers | Tags |
|---|---|---|
| http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39 | x_refsource_CONFIRM | |
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=982134ba62618c2d69fbbbd166d0a11ee3b7e3d8 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2011/06/27/2 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2011-2496 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=716538 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/torvalds/linux/commit/982134ba62618c2d69fbbbd166d0a11ee3b7e3d8 | x_refsource_CONFIRMExploitPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-2496 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-2496 |
Change history (0)
No recorded changes yet.