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CVE-2020-11935

Status Candidate

Overview

It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service attack.

Related Files

Kernel Live Patch Security Notice LSN-0072-1
Posted Oct 14, 2020
Authored by Benjamin M. Romer

It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory). It was discovered that the Serial CAN interface driver in the Linux kernel did not properly initialize data. A local attacker could use this to expose sensitive information (kernel memory). Other issues where also addressed.

tags | advisory, kernel, local
systems | linux
advisories | CVE-2020-0067, CVE-2020-11494, CVE-2020-11935, CVE-2020-12114, CVE-2020-14386, CVE-2020-16119, CVE-2020-16120
SHA-256 | 93076523b60699a74659d86a99aa5642c64e2657baecd1f27345aa8fc2cd2b97
Ubuntu Security Notice USN-4440-1
Posted Jul 28, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4440-1 - It was discovered that the network block device implementation in the Linux kernel did not properly check for error conditions in some situations. An attacker could possibly use this to cause a denial of service. It was discovered that the kernel->user space relay implementation in the Linux kernel did not properly check return values in some situations. A local attacker could possibly use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-16089, CVE-2019-19462, CVE-2019-20810, CVE-2019-20908, CVE-2020-10732, CVE-2020-10757, CVE-2020-10766, CVE-2020-10767, CVE-2020-10768, CVE-2020-11935, CVE-2020-13974, CVE-2020-15780
SHA-256 | 93050dd9768e16bf8e7459dcfcb358a4a7847e519f51bfbd8b25246f475d27e4
Ubuntu Security Notice USN-4439-1
Posted Jul 28, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4439-1 - It was discovered that the network block device implementation in the Linux kernel did not properly check for error conditions in some situations. An attacker could possibly use this to cause a denial of service. It was discovered that the btrfs file system implementation in the Linux kernel did not properly validate file system metadata in some situations. An attacker could use this to construct a malicious btrfs image that, when mounted, could cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel
systems | linux, ubuntu
advisories | CVE-2019-12380, CVE-2019-16089, CVE-2019-19036, CVE-2019-19462, CVE-2019-20810, CVE-2019-20908, CVE-2020-10732, CVE-2020-10757, CVE-2020-10766, CVE-2020-10767, CVE-2020-10768, CVE-2020-11935, CVE-2020-13974, CVE-2020-15780
SHA-256 | 789e8f002f0de81a8d353f1ea8d5a4ecb5aa606f09d0d78851c94acd0cbcd044
Ubuntu Security Notice USN-4425-1
Posted Jul 22, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4425-1 - It was discovered that the network block device implementation in the Linux kernel did not properly check for error conditions in some situations. An attacker could possibly use this to cause a denial of service. It was discovered that the kernel->user space relay implementation in the Linux kernel did not properly check return values in some situations. A local attacker could possibly use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-16089, CVE-2019-19462, CVE-2020-11935, CVE-2020-15780
SHA-256 | cf4699147e9a8170a6b01cfad73d27e74fd7559a378c683fa8339ccc82663df9
Ubuntu Security Notice USN-4427-1
Posted Jul 22, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4427-1 - It was discovered that the Kvaser CAN/USB driver in the Linux kernel did not properly initialize memory in certain situations. A local attacker could possibly use this to expose sensitive information. Chuhong Yuan discovered that go7007 USB audio device driver in the Linux kernel did not properly deallocate memory in some failure conditions. A physically proximate attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-12380, CVE-2019-19947, CVE-2019-20810, CVE-2019-20908, CVE-2020-10732, CVE-2020-10766, CVE-2020-10767, CVE-2020-10768, CVE-2020-11935, CVE-2020-13974
SHA-256 | b977bb1eef5006f04c02310b64f67dfc0df0cf66bdb9c9980f831579b1b67812
Ubuntu Security Notice USN-4426-1
Posted Jul 22, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4426-1 - Jason A. Donenfeld discovered that the ACPI implementation in the Linux kernel did not properly restrict loading SSDT code from an EFI variable. A privileged attacker could use this to bypass Secure Boot lockdown restrictions and execute arbitrary code in the kernel. Fan Yang discovered that the mremap implementation in the Linux kernel did not properly handle DAX Huge Pages. A local attacker with access to DAX storage could use this to gain administrative privileges. Various other issues were also addressed.

tags | advisory, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-20908, CVE-2020-10757, CVE-2020-11935, CVE-2020-15780
SHA-256 | c08d99828ab0121536e6f7fbfa804274851e82d4f947dc4c837c3f5da9f63b08
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