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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
SHA-256 | a9dbb06b95adcc1214de8dcbbb7ca159f7a1029864b69e7390cb529d08ac8433
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
SHA-256 | 23104a0b9abf52386877248cf3fda61cea983577bc8d351a059a8b00c18b9e53
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
SHA-256 | e9e792aadc97786927427c783a1b1572627f4f272916fcaa582f0780c5890272
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
SHA-256 | c46a8944c6adf5f34311710cc344aabe4f1d2d9345df52ca204adc9b0c6bdfc1
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
SHA-256 | e408a3102f01f5fccf4da6ee68f082b7cb946810d6adaf4f91a34a0cd7d733ac
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
SHA-256 | 21c11ff5e2b4a56b072c318b8324099c90ae3de4a7b9f266fe9b4e164e3ad3aa
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
SHA-256 | dd6ff2e0e516de16930d5650c1e19da4171a897ed4034dbca85ee945498d6aae
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
SHA-256 | cee34c70ba2a3639f0d2c6c944ab8c33eaab079317385ea3e05356964547c138
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
SHA-256 | 4b711a1032c43404c0e37835be4261d9e099772127d146641dec44e28a1e8401
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
SHA-256 | 2904161141f71136657aa5feccfaf06d5562a735552e35829baa201b02b6a654
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
SHA-256 | c1b420569ebc8959d5320509d874c3ac3e68c8ce3904aad9c1f4621cbb321abf
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
SHA-256 | 5867502571fddea90398a56293a3dbe716d40185c1b280e5c8f3f22987a5cd52
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
SHA-256 | c12022788231ab722ec0ff37568bbea0399356655e3b6b0008944fa0995e1af1
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
SHA-256 | 87da7447cdcc58e1c011de3f09aca77987a1561e2e522ee7655b485e4b57846b
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
SHA-256 | 9410264f6fc934cc4b6e55a8421ce6e660fa9a5c59cee780c20d92dcd39b6903
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
SHA-256 | a13ef4d294465071b2a61382d84d80fe26c5944c7223069e6c86df3c652031ba
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
SHA-256 | 58d54e3f8882a8b5c415c501a401d5b5582c6e8aa8c6d834857d3ad3ef725a2d
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