CVE-2011-2497
Integer underflow in the l2cap_config_req function in net/bluetooth/l2cap_core.c in the Linux...
8.3 HighFix available
CVE-2011-2497 is a high vulnerability (CVSS 8.3) in Linux Kernel, published August 29, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.97%, the 80th percentile. Fixed in linux-2.6 2.6.32-35squeeze1.
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.
Exploit likelihood
1.97%Unchanged since Feb 4, 2022
What each source reports
NVD Score used
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.
- Record
CVE-2011-2497- CVSS 2.0
- 8.3 High
AV:A/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-191
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2011-2497- Updated
- 2026-11-02
EUVDEUVD-2011-2484 No score
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.
- Record
EUVD-2011-2484- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-65mg-fq5m-qr37 No score
Integer underflow in the l2cap_config_req function in net/bluetooth/l2cap_core.c in the Linux...
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.
- Record
GHSA-65mg-fq5m-qr37- Weakness
- CWE-191
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2011-2497 No score
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.
- Record
UBUNTU-CVE-2011-2497- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
linux-2.6Debian:6.0 |
before 2.6.32-35squeeze1, plus listed versions 2.6.32-302.6.32-30+m68k.52.6.32-312.6.32-31~bpo50+12.6.32-32 Show 5 moreShow less2.6.32-332.6.32-342.6.32-34squeeze12.6.32-352.6.32-35~bpo50+1 |
2.6.32-35squeeze1 |
linux-2.6Debian:5.0 |
before 2.6.26-26lenny4, plus listed versions 2.6.26-132.6.26-13lenny22.6.26-13lenny2~bpo40+12.6.26-142.6.26-15 Show 35 moreShow less2.6.26-15lenny12.6.26-15lenny22.6.26-15lenny32.6.26-15~bpo40+12.6.26-15~bpo40+22.6.26-162.6.26-172.6.26-17lenny12.6.26-17lenny22.6.26-17lenny2~bpo40+12.6.26-17~bpo40+12.6.26-182.6.26-192.6.26-19lenny12.6.26-19lenny22.6.26-19~bpo40+12.6.26-202.6.26-20~bpo40+12.6.26-212.6.26-21lenny12.6.26-21lenny22.6.26-21lenny32.6.26-21lenny42.6.26-21~bpo40+12.6.26-222.6.26-22lenny12.6.26-232.6.26-242.6.26-24lenny12.6.26-252.6.26-25lenny12.6.26-262.6.26-26lenny12.6.26-26lenny22.6.26-26lenny3 |
2.6.26-26lenny4 |
kernelRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-bootwrapperRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-debugRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-debug-debuginfoRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-debug-develRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-debuginfoRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-debuginfo-common-i686Red Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-debuginfo-common-ppc64Red Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
Show 26 moreShow less
| Package | Affected | Fixed |
|---|---|---|
kernel-debuginfo-common-s390xRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-debuginfo-common-x86_64Red Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-develRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-docRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-firmwareRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-headersRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-kdumpRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-kdump-debuginfoRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-kdump-develRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
perfRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
perf-debuginfoRed Hat:enterprise_linux:6::server |
before 0:2.6.32-131.12.1.el6 | 0:2.6.32-131.12.1.el6 |
kernel-rtRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-debugRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-debug-debuginfoRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-debug-develRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-debuginfoRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-debuginfo-common-x86_64Red Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-develRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-docRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-firmwareRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-traceRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-trace-debuginfoRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-trace-develRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-vanillaRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-vanilla-debuginfoRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
kernel-rt-vanilla-develRed Hat:enterprise_mrg:2:server:el6 |
before 0:2.6.33.9-rt31.75.el6rt | 0:2.6.33.9-rt31.75.el6rt |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | affected | |
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
git.kernel.org?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ac28817536797fd40e9646452183606f9e17f71
kernel.org/pub/linux/kernel/v3.0/ChangeLog-3.0
openwall.com/lists/oss-security/2011/06/24/9
marc.info?l=linux-kernel&m=130891911909436&w=2
securityfocus.com/bid/48472
osvdb.org/74679
Show 171 moreShow less
securityreason.com/securityalert/8359
bugzilla.redhat.com/show_bug.cgi?id=716805
nvd.nist.gov/vuln/detail/CVE-2011-2497
access.redhat.com/errata/RHSA-2011:1189
github.com/advisories/GHSA-65mg-fq5m-qr37
docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.1_Technical_Notes/kernel.html
security.access.redhat.com/data/csaf/v2/advisories/2011/rhsa-2011_1189.json
cve.org/CVERecord?id=CVE-2011-1182
ubuntu.com/security/CVE-2011-2497