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CVE-2014-7822

Status Candidate

Overview

The implementation of certain splice_write file operations in the Linux kernel before 3.16 does not enforce a restriction on the maximum size of a single file, which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted splice system call, as demonstrated by use of a file descriptor associated with an ext4 filesystem.

Related Files

Linux splice_write Kernel Panic
Posted Apr 11, 2015
Authored by Emeric Nasi

The implementation of certain splice_write file operations in the Linux kernel before 3.16 does not enforce a restriction on the maximum size of a single file which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted splice system call, as demonstrated by use of a file descriptor associated with an ext4 filesystem. This is proof of concept code that triggers the kernel panic.

tags | exploit, denial of service, kernel, local, proof of concept
systems | linux
advisories | CVE-2014-7822
SHA-256 | 7020e5cb8eb79147f24ae47ba61603cfdfc59462bdfbc98295dfc6b21c5a9a40
Ubuntu Security Notice USN-2541-1
Posted Mar 24, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2541-1 - The Linux kernel's splice system call did not correctly validate its parameters. A local, unprivileged user could exploit this flaw to cause a denial of service (system crash). A flaw was discovered in how Thread Local Storage (TLS) is handled by the task switching function in the Linux kernel for x86_64 based machines. A local user could exploit this flaw to bypass the Address Space Layout Randomization (ASLR) protection mechanism. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-7822, CVE-2014-9419, CVE-2014-9683, CVE-2015-1421
SHA-256 | 2d7e5b61dc25c61afcef553473cababbdf6689f4edd43072e65e8a190d46291b
Ubuntu Security Notice USN-2544-1
Posted Mar 24, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2544-1 - Eric Windisch discovered flaw in how the Linux kernel's XFS file system replaces remote attributes. A local access with access to an XFS file system could exploit this flaw to escalate their privileges. A flaw was discovered in the automatic loading of modules in the crypto subsystem of the Linux kernel. A local user could exploit this flaw to load installed kernel modules, increasing the attack surface and potentially using this to gain administrative privileges. Various other issues were also addressed.

tags | advisory, remote, kernel, local, crypto
systems | linux, ubuntu
advisories | CVE-2013-7421, CVE-2014-7822, CVE-2014-9644, CVE-2015-0274
SHA-256 | 9ddf124b2f1631a25b55a6630565e4ec8e300e7cba350a78679c54da8bfe363c
Ubuntu Security Notice USN-2543-1
Posted Mar 24, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2543-1 - Eric Windisch discovered flaw in how the Linux kernel's XFS file system replaces remote attributes. A local access with access to an XFS file system could exploit this flaw to escalate their privileges. A flaw was discovered in the automatic loading of modules in the crypto subsystem of the Linux kernel. A local user could exploit this flaw to load installed kernel modules, increasing the attack surface and potentially using this to gain administrative privileges. Various other issues were also addressed.

tags | advisory, remote, kernel, local, crypto
systems | linux, ubuntu
advisories | CVE-2013-7421, CVE-2014-7822, CVE-2014-9644, CVE-2015-0274
SHA-256 | 1d20f0a45ef3c2328018fdfae24660ad9d7b3abed4e42067fe621154e5dc00f9
Ubuntu Security Notice USN-2542-1
Posted Mar 24, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2542-1 - The Linux kernel's splice system call did not correctly validate its parameters. A local, unprivileged user could exploit this flaw to cause a denial of service (system crash). A flaw was discovered in how Thread Local Storage (TLS) is handled by the task switching function in the Linux kernel for x86_64 based machines. A local user could exploit this flaw to bypass the Address Space Layout Randomization (ASLR) protection mechanism. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-7822, CVE-2014-9419, CVE-2014-9683, CVE-2015-1421
SHA-256 | 6d16a19b701a03e7e17da5f559a14199c6b398ae3799e95bf7de7f4747bb2efe
Red Hat Security Advisory 2015-0694-01
Posted Mar 18, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-0694-01 - The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's XFS file system handled replacing of remote attributes under certain conditions. A local user with access to XFS file system mount could potentially use this flaw to escalate their privileges on the system. A flaw was found in the way the Linux kernel's splice() system call validated its parameters. On certain file systems, a local, unprivileged user could use this flaw to write past the maximum file size, and thus crash the system.

tags | advisory, remote, kernel, local
systems | linux, redhat
advisories | CVE-2014-7822, CVE-2014-8086, CVE-2014-8172, CVE-2014-8173, CVE-2015-0274
SHA-256 | 0e711acf0df6e837643b849c9bb486ba31ff24ef22e412c4d7f4581de627ee57
Red Hat Security Advisory 2015-0674-01
Posted Mar 11, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-0674-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. It was found that the Linux kernel's Infiniband subsystem did not properly sanitize input parameters while registering memory regions from user space via the verbs API. A local user with access to a /dev/infiniband/uverbsX device could use this flaw to crash the system or, potentially, escalate their privileges on the system. A flaw was found in the way the Linux kernel's splice() system call validated its parameters. On certain file systems, a local, unprivileged user could use this flaw to write past the maximum file size, and thus crash the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2014-7822, CVE-2014-8159, CVE-2014-8160, CVE-2014-8369
SHA-256 | 252d3a3f04735fff4c9e91df76c07d6a4f2fff78ef8e210b02cb32326371d925
Debian Security Advisory 3170-1
Posted Feb 26, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3170-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, information leaks or privilege escalation.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2013-7421, CVE-2014-7822, CVE-2014-8160, CVE-2014-8559, CVE-2014-9585, CVE-2014-9644, CVE-2014-9683, CVE-2015-0239, CVE-2015-1420, CVE-2015-1421, CVE-2015-1593
SHA-256 | bd8c99b2ab449bf19ff881a59d02a9213bd109f150a9ca0142efa66f7d734b69
Red Hat Security Advisory 2015-0164-01
Posted Feb 11, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-0164-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's splice() system call validated its parameters. On certain file systems, a local, unprivileged user could use this flaw to write past the maximum file size, and thus crash the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2014-7822
SHA-256 | 87d55d169bb1eb75a6d8b03b0fd74309e51ddd4db35ed7adce2773bdbe95e460
Red Hat Security Advisory 2015-0102-01
Posted Jan 29, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-0102-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's SCTP implementation validated INIT chunks when performing Address Configuration Change. A remote attacker could use this flaw to crash the system by sending a specially crafted SCTP packet to trigger a NULL pointer dereference on the system. A race condition flaw was found in the way the Linux kernel's mmap, madvise, and fallocate system calls interacted with each other while operating on virtual memory file system files. A local user could use this flaw to cause a denial of service.

tags | advisory, remote, denial of service, kernel, local
systems | linux, redhat
advisories | CVE-2014-4171, CVE-2014-5471, CVE-2014-5472, CVE-2014-7145, CVE-2014-7822, CVE-2014-7841
SHA-256 | d6cb35f9eec16000c013c4d690821d03205cdba86b1d5048733ff6c4beccc835
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