CVE-2011-2492
kernel: bluetooth: l2cap and rfcomm: fix 1 byte infoleak to userspace
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
1Exploited in Wild
-Decision
Descriptions
The bluetooth subsystem in the Linux kernel before 3.0-rc4 does not properly initialize certain data structures, which allows local users to obtain potentially sensitive information from kernel memory via a crafted getsockopt system call, related to (1) the l2cap_sock_getsockopt_old function in net/bluetooth/l2cap_sock.c and (2) the rfcomm_sock_getsockopt_old function in net/bluetooth/rfcomm/sock.c.
El subsistema de bluetooth en el kernel de Linux anteriores a v3.0-rc4 no inicializa correctamente algunas estructuras de datos, lo que permite a usuarios locales obtener información sensible de la memoria del kernel a través de una llamada getsockopt manipulada, en relación con (1) la función l2cap_sock_getsockopt_old en net/bluetooth/l2cap_sock.c y (2) la función rfcomm_sock_getsockopt_old en net/bluetooth/rfcomm/sock.c.
Updated kernel packages that fix several security issues, various bugs, and add two enhancements are now available for Red Hat Enterprise Linux 6. Using PCI passthrough without interrupt remapping support allowed KVM guests to generate MSI interrupts and thus potentially inject traps. A privileged guest user could use this flaw to crash the host or possibly escalate their privileges on the host. The fix for this issue can prevent PCI passthrough working and guests starting. Flaw in the client-side NLM implementation could allow a local, unprivileged user to cause a denial of service.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2011-06-15 CVE Reserved
- 2011-07-15 CVE Published
- 2011-09-14 First Exploit
- 2024-08-06 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
References (11)
| URL | Tag | Source |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8d03e971cf403305217b8e62db3a2e5ad2d6263f | X_refsource_confirm | |
| http://permalink.gmane.org/gmane.linux.bluez.kernel/12909 | Broken Link | |
| http://securitytracker.com/id?1025778 | Third Party Advisory | |
| http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc4 | Broken Link |
| URL | Date | SRC |
|---|---|---|
| https://packetstorm.news/files/id/105078 | 2011-09-14 |
| URL | Date | SRC |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2011/06/24/2 | 2023-02-13 | |
| http://www.openwall.com/lists/oss-security/2011/06/24/3 | 2023-02-13 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=703019 | 2011-09-12 |
| URL | Date | SRC |
|---|---|---|
| http://marc.info/?l=bugtraq&m=139447903326211&w=2 | 2023-02-13 | |
| http://rhn.redhat.com/errata/RHSA-2011-0927.html | 2023-02-13 | |
| https://access.redhat.com/security/cve/CVE-2011-2492 | 2011-09-12 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 3.0 Search vendor "Linux" for product "Linux Kernel" and version " < 3.0" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.0 Search vendor "Linux" for product "Linux Kernel" and version "3.0" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.0 Search vendor "Linux" for product "Linux Kernel" and version "3.0" | rc1 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.0 Search vendor "Linux" for product "Linux Kernel" and version "3.0" | rc2 |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.0 Search vendor "Linux" for product "Linux Kernel" and version "3.0" | rc3 |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Aus Search vendor "Redhat" for product "Enterprise Linux Aus" | 5.6 Search vendor "Redhat" for product "Enterprise Linux Aus" and version "5.6" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop" | 5.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "5.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus" | 5.6 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "5.6" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server" | 5.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "5.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 5.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "5.0" | - |
Affected
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