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CVE-2017-7533

Status Candidate

Overview

Race condition in the fsnotify implementation in the Linux kernel through 4.12.4 allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that leverages simultaneous execution of the inotify_handle_event and vfs_rename functions.

Related Files

Red Hat Security Advisory 2017-2869-01
Posted Oct 10, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2869-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A race condition was found in the Linux kernel, present since v3.14-rc1 through v4.12. The race happens between threads of inotify_handle_event() and vfs_rename() while running the rename operation against the same file. As a result of the race the next slab data or the slab's free list pointer can be corrupted with attacker-controlled data, which may lead to the privilege escalation.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-7533
SHA-256 | 2c093cfe3a6362e9d3175b0d9885b9b9bb9d4ade02e8f45dd8a1a2fa06d59958
Red Hat Security Advisory 2017-2770-01
Posted Sep 20, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2770-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A race condition was found in the Linux kernel, present since v3.14-rc1 through v4.12. The race happens between threads of inotify_handle_event() and vfs_rename() while running the rename operation against the same file. As a result of the race the next slab data or the slab's free list pointer can be corrupted with attacker-controlled data, which may lead to the privilege escalation.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-7533
SHA-256 | 8ce1e8eda24ca99789ffae91e998f600aa35c54fea94475650ac19fd442faa90
Red Hat Security Advisory 2017-2669-01
Posted Sep 6, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2669-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: A race condition was found in the Linux kernel, present since v3.14-rc1 through v4.12. The race happens between threads of inotify_handle_event() and vfs_rename() while running the rename operation against the same file. As a result of the race the next slab data or the slab's free list pointer can be corrupted with attacker-controlled data, which may lead to the privilege escalation.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2015-8839, CVE-2016-10088, CVE-2016-7042, CVE-2016-7097, CVE-2016-8645, CVE-2016-9576, CVE-2016-9604, CVE-2016-9685, CVE-2016-9806, CVE-2017-2671, CVE-2017-5970, CVE-2017-6001, CVE-2017-6951, CVE-2017-7187, CVE-2017-7533, CVE-2017-7889, CVE-2017-8797, CVE-2017-8890, CVE-2017-9074, CVE-2017-9075, CVE-2017-9076, CVE-2017-9077
SHA-256 | e48d45b3299e25794baf01efaba70783d2cc37c96df4e1cb6cd794ff41e25ad0
Red Hat Security Advisory 2017-2585-01
Posted Sep 5, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2585-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: A race condition was found in the Linux kernel, present since v3.14-rc1 through v4.12. The race happens between threads of inotify_handle_event() and vfs_rename() while running the rename operation against the same file. As a result of the race the next slab data or the slab's free list pointer can be corrupted with attacker-controlled data, which may lead to the privilege escalation.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-7533
SHA-256 | 48195bf02672025f10f5c377258fedd33fea4c5f4758ecdcfa5a616f8ed58651
Ubuntu Security Notice USN-3392-2
Posted Aug 15, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3392-2 - USN-3392-1 fixed a regression in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. USN-3378-2 fixed vulnerabilities in the Linux Hardware Enablement kernel. Unfortunately, a regression was introduced that prevented conntrack from working correctly in some situations. This update fixes the problem. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-1000365, CVE-2017-10810, CVE-2017-7482, CVE-2017-7533
SHA-256 | 4ceb9f396710a55f870a4c100dea244d686b7a1aa5880daec8a3335ff4a68c80
Ubuntu Security Notice USN-3392-1
Posted Aug 15, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3392-1 - USN-3378-1 fixed vulnerabilities in the Linux kernel. Unfortunately, a regression was introduced that prevented conntrack from working correctly in some situations. This update fixes the problem. Fan Wu and Shixiong Zhao discovered a race condition between inotify events and vfs rename operations in the Linux kernel. An unprivileged local attacker could use this to cause a denial of service or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-1000365, CVE-2017-10810, CVE-2017-7482, CVE-2017-7533
SHA-256 | 057793077b8f9ddf5f50bf32c1d7bd103fa235baebb78eca47b42e9dbf8d08a1
Red Hat Security Advisory 2017-2473-01
Posted Aug 15, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2473-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A race condition was found in the Linux kernel, present since v3.14-rc1 through v4.12. The race happens between threads of inotify_handle_event() and vfs_rename() while running the rename operation against the same file. As a result of the race the next slab data or the slab's free list pointer can be corrupted with attacker-controlled data.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-7533
SHA-256 | 9652c71415d4cd5f986204ff51d606252a73679a56077c793a3a4248e7e099b3
Debian Security Advisory 3927-1
Posted Aug 7, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3927-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2017-1000365, CVE-2017-10810, CVE-2017-10911, CVE-2017-11176, CVE-2017-7346, CVE-2017-7482, CVE-2017-7533, CVE-2017-7541, CVE-2017-7542, CVE-2017-9605
SHA-256 | 9f9c5bb5b6146a8be5b426602758bdbc89de02e6443b2d13e49692986ac5645e
Kernel Live Patch Security Notice LSN-0027-1
Posted Aug 4, 2017
Authored by Benjamin M. Romer

Fan Wu and Shixiong Zhao discovered a race condition between inotify events and vfs rename operations in the Linux kernel. An unprivileged local attacker could use this to cause a denial of service (system crash) or execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux
advisories | CVE-2017-7533
SHA-256 | baef07895fca02ffacf267d405d435978b2686188ef7bf692a74c663aba84c69
Ubuntu Security Notice USN-3378-2
Posted Aug 4, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3378-2 - USN-3378-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Fan Wu and Shixiong Zhao discovered a race condition between inotify events and vfs rename operations in the Linux kernel. An unprivileged local attacker could use this to cause a denial of service or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-1000365, CVE-2017-10810, CVE-2017-7482, CVE-2017-7533
SHA-256 | abe4766276a137076dece92efb55e96aa808116441c78db8a7b24f99519e0fa9
Ubuntu Security Notice USN-3378-1
Posted Aug 4, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3378-1 - Fan Wu and Shixiong Zhao discovered a race condition between inotify events and vfs rename operations in the Linux kernel. An unprivileged local attacker could use this to cause a denial of service or execute arbitrary code. It was discovered that the Linux kernel did not properly restrict RLIMIT_STACK size. A local attacker could use this in conjunction with another vulnerability to possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-1000365, CVE-2017-10810, CVE-2017-7482, CVE-2017-7533
SHA-256 | 82fe655fdd3467cbdcaee0e489dd0aeaa8a64e7c143f2b57f5e7a9bc84d84d8c
Ubuntu Security Notice USN-3377-2
Posted Aug 4, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3377-2 - USN-3377-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS. Fan Wu and Shixiong Zhao discovered a race condition between inotify events and vfs rename operations in the Linux kernel. An unprivileged local attacker could use this to cause a denial of service or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-1000365, CVE-2017-10810, CVE-2017-7482, CVE-2017-7533
SHA-256 | b71610e325c47fd90e3cd3d9299fdf122d5a4541c010aa3e6a4e285a36db1520
Ubuntu Security Notice USN-3377-1
Posted Aug 4, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3377-1 - Fan Wu and Shixiong Zhao discovered a race condition between inotify events and vfs rename operations in the Linux kernel. An unprivileged local attacker could use this to cause a denial of service or execute arbitrary code. It was discovered that the Linux kernel did not properly restrict RLIMIT_STACK size. A local attacker could use this in conjunction with another vulnerability to possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-1000365, CVE-2017-10810, CVE-2017-7482, CVE-2017-7533
SHA-256 | 4b6c6fe505cf49adca37983f3faff4290a45654c3ad3dc8c4b7f3a78b31f6644
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