CVE-2012-2127
Ubuntu Security Notice USN-1594-1
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
4Exploited in Wild
-Decision
Descriptions
fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd.
fs/proc/root.c en las implementaciones de procfs del kernel de Linux anteriores a v3.2 no interactua adecuadamente con las llamadas al sistema de CLONE_NEWPID, lo que permite a atacantes remotos provocar una denegación de servicio (pérdida de referencia y consumo excesivo de memoria), haciendo muchas conexiones a un demonio que usa namespaces PID para aislar a los clientes, como lo demuestra vsftpd.
Vadim Ponomarev discovered a flaw in the Linux kernel causing a reference leak when PID namespaces are used. A remote attacker could exploit this flaw causing a denial of service. A flaw was found in how the Linux kernel's KVM (Kernel-based Virtual Machine) subsystem handled MSI (Message Signaled Interrupts). A local unprivileged user could exploit this flaw to cause a denial of service or potentially elevate privileges. Various other issues were also addressed.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2012-04-04 CVE Reserved
- 2012-06-21 CVE Published
- 2024-08-06 CVE Updated
- 2024-08-06 First Exploit
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CAPEC
References (11)
| URL | Tag | Source |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1 | X_refsource_confirm | |
| http://www.kernel.org/pub/linux/kernel/v3.x | X_refsource_confirm | |
| http://www.openwall.com/lists/oss-security/2012/04/22/1 | Mailing List |
|
| http://www.securityfocus.com/bid/55774 | Vdb Entry |
| URL | Date | SRC |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2012/04/20/25 | 2024-08-06 | |
| https://bugzilla.novell.com/show_bug.cgi?id=757783 | 2024-08-06 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=815188 | 2024-08-06 | |
| https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1 | 2024-08-06 |
| URL | Date | SRC |
|---|---|---|
| http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2 | 2023-02-13 |
| URL | Date | SRC |
|---|---|---|
| http://ubuntu.com/usn/usn-1607-1 | 2023-02-13 | |
| http://www.ubuntu.com/usn/USN-1594-1 | 2023-02-13 |
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" | <= 3.1.10 Search vendor "Linux" for product "Linux Kernel" and version " <= 3.1.10" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.1.1 Search vendor "Linux" for product "Linux Kernel" and version "3.1.1" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.1.2 Search vendor "Linux" for product "Linux Kernel" and version "3.1.2" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.1.3 Search vendor "Linux" for product "Linux Kernel" and version "3.1.3" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.1.4 Search vendor "Linux" for product "Linux Kernel" and version "3.1.4" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.1.5 Search vendor "Linux" for product "Linux Kernel" and version "3.1.5" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.1.6 Search vendor "Linux" for product "Linux Kernel" and version "3.1.6" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.1.7 Search vendor "Linux" for product "Linux Kernel" and version "3.1.7" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.1.8 Search vendor "Linux" for product "Linux Kernel" and version "3.1.8" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.1.9 Search vendor "Linux" for product "Linux Kernel" and version "3.1.9" | - |
Affected
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