kernel: bluetooth: buffer overflow in l2cap config request
Published Aug 29, 2011
8.3
HIGHCVSS 2.0
EPSS 1.97%
Description
Integer underflow in the l2cap_config_req function in net/bluetooth/l2cap_core.c in the Linux kernel before 3.0 allows remote attackers to cause a denial of service (heap memory corruption) or possibly have unspecified other impact via a small command-size value within the command header of a Logical Link Control and Adaptation Protocol (L2CAP) configuration request, leading to a buffer overflow.
Affected products
No data.
- < 3.0
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-131.12.1.el6
Fixed · RHSA-2011:1189
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
Not affected
Red Hat Enterprise Linux 5
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-131.12.1.el6 | Fixed | RHSA-2011:1189 |
| 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 | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4 and 5 as they did not backport the upstream commit 5dee9e7c that introduced this issue. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-1189.html, and https://rhn.redhat.com/errata/RHSA-2011-1253.html.
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:A/AC:L/Au:N/C:C/I:C/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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.97% (0.01974) | 79.72th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.97% (0.01974) | 77.79th | v5 (v2026.06.15) |
| Mar 17, 2025 | 2.79% (0.02792) | 85.15th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.19% (0.01192) | 85.77th | v3 (v2023.03.01) |
| Feb 27, 2024 | 0.84% (0.00843) | 81.63th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.77% (0.00771) | 80.68th | v3 (v2023.03.01) |
| Mar 29, 2023 | 0.77% (0.00771) | 78.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.84% (0.00842) | 79.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.97% (0.01974) | 78.97th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.97% (0.01974) | 78.46th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.54% (0.01537) | 73.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.97% (0.01974) | 77.12th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.97% (0.01974) | 56.20th | v2 (v2022.01.01) |
References (12)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ac28817536797fd40e9646452183606f9e17f71 x_refsource_CONFIRM
- http://marc.info/?l=linux-kernel&m=130891911909436&w=2 mailing-listx_refsource_MLISTPatchThird Party Advisory
- http://securityreason.com/securityalert/8359 third-party-advisoryx_refsource_SREASONPatchThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.0/ChangeLog-3.0 x_refsource_CONFIRMBroken Link
- http://www.openwall.com/lists/oss-security/2011/06/24/9 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2011/06/27/3 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.osvdb.org/74679 vdb-entryx_refsource_OSVDBBroken Link
- http://www.securityfocus.com/bid/48472 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2011-2497 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=716805 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2011-2497
- https://www.cve.org/CVERecord?id=CVE-2011-2497
Change history (0)
No recorded changes yet.