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CVE-2011-4131

Status Candidate

Overview

The NFSv4 implementation in the Linux kernel before 3.2.2 does not properly handle bitmap sizes in GETACL replies, which allows remote NFS servers to cause a denial of service (OOPS) by sending an excessive number of bitmap words.

Related Files

Red Hat Security Advisory 2012-1541-01
Posted Dec 4, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1541-01 - These packages contain the Linux kernel. A malicious NFSv4 server could return a crafted reply to a GETACL request, causing a denial of service on the client. A flaw in the dl2k driver could allow a local, unprivileged user to issue potentially harmful IOCTLs, possibly causing Ethernet adapters using the driver to malfunction.

tags | advisory, denial of service, kernel, local
systems | linux, redhat
advisories | CVE-2011-4131, CVE-2012-2313
SHA-256 | be0924f7d8cbe1f7cf8954b30f8836cc0f44bc53af0db061f11bc5a34bbe9465
Ubuntu Security Notice USN-1530-1
Posted Aug 13, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1530-1 - Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier. Various other issues were also addressed.

tags | advisory, remote, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2011-4131, CVE-2012-2123, CVE-2012-2136, CVE-2012-2313, CVE-2012-2319, CVE-2012-2372, CVE-2012-2375, CVE-2011-4131, CVE-2012-2123, CVE-2012-2136, CVE-2012-2313, CVE-2012-2319, CVE-2012-2372, CVE-2012-2375
SHA-256 | 1182d44ab2f37a093d4b3adc952b3b7cbf5002be8d366863ba89dea8ab42ea57
Red Hat Security Advisory 2012-0862-04
Posted Jun 20, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0862-04 - 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 Event Poll subsystem handled large, nested epoll structures. A local, unprivileged user could use this flaw to cause a denial of service. A malicious Network File System version 4 server could return a crafted reply to a GETACL request, causing a denial of service on the client.

tags | advisory, denial of service, kernel, local
systems | linux, redhat
advisories | CVE-2011-1083, CVE-2011-4131
SHA-256 | be99652631acf308081c309fa75b7d32c58d1a6344e7d63df7e8cfbd8b79fb8e
Ubuntu Security Notice USN-1476-1
Posted Jun 16, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1476-1 - Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. A flaw was discovered in the Linux kernel's KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. Schacher Raindel discovered a flaw in the Linux kernel's memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges. Various other issues were also addressed.

tags | advisory, remote, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2011-4131, CVE-2012-2121, CVE-2012-2133, CVE-2012-2313, CVE-2012-2319, CVE-2012-2383, CVE-2012-2384, CVE-2011-4131, CVE-2012-2121, CVE-2012-2133, CVE-2012-2313, CVE-2012-2319, CVE-2012-2383, CVE-2012-2384
SHA-256 | 7e88c5c50cfacbb71a7657d5d285ae7ef0a77ecd41daf8b7ac21c03f027c2faf
Ubuntu Security Notice USN-1472-1
Posted Jun 12, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1472-1 - Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. A flaw was discovered in the Linux kernel's KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. Schacher Raindel discovered a flaw in the Linux kernel's memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges. Various other issues were also addressed.

tags | advisory, remote, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2011-4131, CVE-2012-2121, CVE-2012-2133, CVE-2012-2313, CVE-2012-2319, CVE-2012-2383, CVE-2012-2384, CVE-2011-4131, CVE-2012-2121, CVE-2012-2133, CVE-2012-2313, CVE-2012-2319, CVE-2012-2383, CVE-2012-2384
SHA-256 | f6b10b2fbdb528f442cb96e52f6df2940c5be1eeabed260818c6143b69ef8d30
Ubuntu Security Notice USN-1470-1
Posted Jun 12, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1470-1 - Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. A flaw was discovered in the Linux kernel's KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. Various other issues were also addressed.

tags | advisory, remote, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2011-4131, CVE-2012-1601, CVE-2012-2121, CVE-2012-2123, CVE-2012-2133, CVE-2011-4131, CVE-2012-1601, CVE-2012-2121, CVE-2012-2123, CVE-2012-2133
SHA-256 | fe6b359af2c687cda0fce023e8e9c9304bee201b1d57cb22fcf7188bb397c2c7
Ubuntu Security Notice USN-1471-1
Posted Jun 12, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1471-1 - Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. A flaw was discovered in the Linux kernel's KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. Schacher Raindel discovered a flaw in the Linux kernel's memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges. Various other issues were also addressed.

tags | advisory, remote, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2011-4131, CVE-2012-2121, CVE-2012-2133, CVE-2012-2313, CVE-2012-2319, CVE-2012-2383, CVE-2012-2384, CVE-2011-4131, CVE-2012-2121, CVE-2012-2133, CVE-2012-2313, CVE-2012-2319, CVE-2012-2383, CVE-2012-2384
SHA-256 | 5da40a81e209efaa88fb4ba0a92153988d80335c08397b33d2a9d2f74e48edc2
Ubuntu Security Notice USN-1457-1
Posted Jun 1, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1457-1 - Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. A flaw was discovered in the Linux kernel's KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. Various other issues were also addressed.

tags | advisory, remote, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2011-4131, CVE-2012-1601, CVE-2012-2121, CVE-2012-2123, CVE-2012-2133, CVE-2011-4131, CVE-2012-1601, CVE-2012-2121, CVE-2012-2123, CVE-2012-2133
SHA-256 | 649c25f1d00b47ba22234b57faaf20821809ce2e942e784a0f40d1efe1ac41dc
Red Hat Security Advisory 2012-0333-01
Posted Feb 24, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0333-01 - Updates have been made to the Linux kernel. SG_IO ioctl SCSI requests on partitions or LVM volumes could be passed to the underlying block device, allowing a privileged user to bypass restrictions and gain read and write access to the entire block device. A local, unprivileged user could use an integer overflow flaw in drm_mode_dirtyfb_ioctl() to cause a denial of service or escalate their privileges. A local, unprivileged user could use an integer overflow flaw in drm_mode_dirtyfb_ioctl() to cause a denial of service or escalate their privileges. A local, unprivileged user could use a flaw in the Performance Events implementation to cause a denial of service. Various other issues have also been addressed.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, redhat
advisories | CVE-2011-2918, CVE-2011-4077, CVE-2011-4097, CVE-2011-4110, CVE-2011-4127, CVE-2011-4131, CVE-2011-4132, CVE-2012-0038, CVE-2012-0044, CVE-2012-0207, CVE-2012-0810
SHA-256 | ab385ec0a710376d5bd1648fee2d56710fe8b5e7cf9b6e8931a4f3a897ec925a
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