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CVE-2012-4530

Status Candidate

Overview

The load_script function in fs/binfmt_script.c in the Linux kernel before 3.7.2 does not properly handle recursion, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.

Related Files

Red Hat Security Advisory 2013-0566-01
Posted Mar 7, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-0566-01 - The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A buffer overflow flaw was found in the way UTF-8 characters were converted to UTF-16 in the utf8s_to_utf16s() function of the Linux kernel's FAT file system implementation. A local user able to mount a FAT file system with the "utf8=1" option could use this flaw to crash the system or, potentially, to escalate their privileges.

tags | advisory, overflow, kernel, local
systems | linux, redhat
advisories | CVE-2012-2375, CVE-2012-4530, CVE-2013-1772, CVE-2013-1773
MD5 | e141b91ac14947440648c4cac3c5c22c
Red Hat Security Advisory 2013-0223-01
Posted Feb 5, 2013
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2013-0223-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. It was found that a deadlock could occur in the Out of Memory killer. A process could trigger this deadlock by consuming a large amount of memory, and then causing request_module() to be called. A local, unprivileged user could use this flaw to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, redhat
advisories | CVE-2012-4398, CVE-2012-4461, CVE-2012-4530
MD5 | 7854394b7fa8ca6444bf727612d10d8b
Ubuntu Security Notice USN-1704-2
Posted Feb 2, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1704-2 - USN-1704-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated regression inotify/fanotify stopped working after upgrading. This update fixes the problem. Brad Spengler discovered a flaw in the Linux kernel's uname system call. An unprivileged user could exploit this flaw to read kernel stack memory. Jon Howell reported a flaw in the Linux kernel's KVM (Kernel-based virtual machine) subsystem's handling of the XSAVE feature. On hosts, using qemu userspace, without the XSAVE feature an unprivileged local attacker could exploit this flaw to crash the system. Dmitry Monakhov reported a race condition flaw the Linux ext4 filesystem that can expose stale data. An unprivileged user could exploit this flaw to cause an information leak. A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents. Rodrigo Freire discovered a flaw in the Linux kernel's TCP illinois congestion control algorithm. A local attacker could use this to cause a denial of service. A flaw was discovered in the Linux kernel's handling of new hot-plugged memory. An unprivileged local user could exploit this flaw to cause a denial of service by crashing the system. Florian Weimer discovered that hypervkvpd, which is distributed in the Linux kernel, was not correctly validating source addresses of netlink packets. An untrusted local user can cause a denial of service by causing hypervkvpd to exit. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, tcp, vulnerability
systems | linux, ubuntu
advisories | CVE-2012-0957, CVE-2012-4461, CVE-2012-4508, CVE-2012-4530, CVE-2012-4565, CVE-2012-5517, CVE-2012-5532
MD5 | ec938d9f9edb9255dc8518932ade6a5a
Ubuntu Security Notice USN-1698-2
Posted Feb 2, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1698-2 - USN-1698-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated regression inotify/fanotify stopped working after upgrading. This update fixes the problem. A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents. Florian Weimer discovered that hypervkvpd, which is distributed in the Linux kernel, was not correctly validating source addresses of netlink packets. An untrusted local user can cause a denial of service by causing hypervkvpd to exit. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2012-4530, CVE-2012-5532
MD5 | 819aa0088f3bca4338dd223563a74a4c
Ubuntu Security Notice USN-1696-2
Posted Feb 2, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1696-2 - USN-1696-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated regression inotify/fanotify stopped working after upgrading. This update fixes the problem. Jon Howell reported a flaw in the Linux kernel's KVM (Kernel-based virtual machine) subsystem's handling of the XSAVE feature. On hosts, using qemu userspace, without the XSAVE feature an unprivileged local attacker could exploit this flaw to crash the system. A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents. Florian Weimer discovered that hypervkvpd, which is distributed in the Linux kernel, was not correctly validating source addresses of netlink packets. An untrusted local user can cause a denial of service by causing hypervkvpd to exit. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2012-4461, CVE-2012-4530, CVE-2012-5532
MD5 | 06d065301a10db14243d93bdb6fbba2c
Ubuntu Security Notice USN-1700-2
Posted Feb 2, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1700-2 - USN-1700-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated regression inotify/fanotify stopped working after upgrading. This update fixes the problem. A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents. Florian Weimer discovered that hypervkvpd, which is distributed in the Linux kernel, was not correctly validating source addresses of netlink packets. An untrusted local user can cause a denial of service by causing hypervkvpd to exit. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2012-4530, CVE-2012-5532
MD5 | 4a39491f43725222ce9cc2821320b8bf
Ubuntu Security Notice USN-1699-2
Posted Feb 2, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1699-2 - USN-1699-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated regression inotify/fanotify stopped working after upgrading. This update fixes the problem. Jon Howell reported a flaw in the Linux kernel's KVM (Kernel-based virtual machine) subsystem's handling of the XSAVE CPU feature. On hosts without the XSAVE CPU feature, using qemu userspace, an unprivileged local attacker could exploit this flaw to crash the system. A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents. Florian Weimer discovered that hypervkvpd, which is distributed in the Linux kernel, was not correctly validating source addresses of netlink packets. An untrusted local user can cause a denial of service by causing hypervkvpd to exit. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2012-4461, CVE-2012-4530, CVE-2012-5532
MD5 | 1d1eb385fb8884295a6c07dfb32ae2fd
Ubuntu Security Notice USN-1704-1
Posted Jan 23, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1704-1 - Brad Spengler discovered a flaw in the Linux kernel's uname system call. An unprivileged user could exploit this flaw to read kernel stack memory. Jon Howell reported a flaw in the Linux kernel's KVM (Kernel-based virtual machine) subsystem's handling of the XSAVE feature. On hosts, using qemu userspace, without the XSAVE feature an unprivileged local attacker could exploit this flaw to crash the system. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-0957, CVE-2012-4461, CVE-2012-4508, CVE-2012-4530, CVE-2012-4565, CVE-2012-5517, CVE-2012-5532, CVE-2012-0957, CVE-2012-4461, CVE-2012-4508, CVE-2012-4530, CVE-2012-4565, CVE-2012-5517, CVE-2012-5532
MD5 | ad1dbf8308a60ea5598f6aae1851f7cd
Ubuntu Security Notice USN-1700-1
Posted Jan 18, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1700-1 - A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents. Florian Weimer discovered that hypervkvpd, which is distributed in the Linux kernel, was not correctly validating source addresses of netlink packets. An untrusted local user can cause a denial of service by causing hypervkvpd to exit. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-4530, CVE-2012-5532, CVE-2012-4530, CVE-2012-5532
MD5 | 91d4b117d3dc699dc84ae4b7d1d93fa2
Ubuntu Security Notice USN-1699-1
Posted Jan 18, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1699-1 - Jon Howell reported a flaw in the Linux kernel's KVM (Kernel-based virtual machine) subsystem's handling of the XSAVE CPU feature. On hosts without the XSAVE CPU feature, using qemu userspace, an unprivileged local attacker could exploit this flaw to crash the system. A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-4461, CVE-2012-4530, CVE-2012-5532, CVE-2012-4461, CVE-2012-4530, CVE-2012-5532
MD5 | e383cc98651277e4c1a2270e899d247c
Ubuntu Security Notice USN-1696-1
Posted Jan 18, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1696-1 - Jon Howell reported a flaw in the Linux kernel's KVM (Kernel-based virtual machine) subsystem's handling of the XSAVE CPU feature. On hosts without the XSAVE CPU feature, using qemu userspace, an unprivileged local attacker could exploit this flaw to crash the system. A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-4461, CVE-2012-4530, CVE-2012-5532, CVE-2012-4461, CVE-2012-4530, CVE-2012-5532
MD5 | feeac74e26d435190975c91486a7bb43
Ubuntu Security Notice USN-1698-1
Posted Jan 18, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1698-1 - A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents. Florian Weimer discovered that hypervkvpd, which is distributed in the Linux kernel, was not correctly validating source addresses of netlink packets. An untrusted local user can cause a denial of service by causing hypervkvpd to exit. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-4530, CVE-2012-5532, CVE-2012-4530, CVE-2012-5532
MD5 | 9958d5487e25d02367172e6f9d672cfa
Ubuntu Security Notice USN-1691-1
Posted Jan 15, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1691-1 - A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-4530
MD5 | f8cae02be1a35d467257df1941351ae0
Ubuntu Security Notice USN-1689-1
Posted Jan 15, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1689-1 - Jon Howell reported a flaw in the Linux kernel's KVM (Kernel-based virtual machine) subsystem's handling of the XSAVE feature. On hosts, using qemu userspace, without the XSAVE feature an unprivileged local attacker could exploit this flaw to crash the system. A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-4461, CVE-2012-4530, CVE-2012-4461, CVE-2012-4530
MD5 | 910941867190376e5a8ba8d02a70832c
Ubuntu Security Notice USN-1688-1
Posted Jan 15, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1688-1 - Jon Howell reported a flaw in the Linux kernel's KVM (Kernel-based virtual machine) subsystem's handling of the XSAVE feature. On hosts, using qemu userspace, without the XSAVE feature an unprivileged local attacker could exploit this flaw to crash the system. A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-4461, CVE-2012-4530, CVE-2012-4461, CVE-2012-4530
MD5 | 74954c800770c1962d255eaa98fecf85
Ubuntu Security Notice USN-1684-1
Posted Jan 10, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1684-1 - A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-4530
MD5 | 584630b2ba0b5110f9fedda129a9554b
Ubuntu Security Notice USN-1683-1
Posted Jan 10, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1683-1 - A flaw was discovered in the Linux kernel's handling of script execution when module loading is enabled. A local attacker could exploit this flaw to cause a leak of kernel stack contents.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2012-4530
MD5 | 891c0d276e115dc5319aa49e43a7fc1a
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