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CVE-2019-15792

Status Candidate

Overview

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file->private_data, a void* that points to a filesystem-dependent type, to a "struct shiftfs_file_info *". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code.

Related Files

Ubuntu Security Notice USN-4183-2: Posted Nov 14, 2019; Authored by Ubuntu | Site security.ubuntu.com; Ubuntu Security Notice 4183-2 - USN-4183-1 fixed vulnerabilities in the Linux kernel. It was discovered that the kernel fix for CVE-2019-0155 was incomplete on 64-bit Intel x86 systems. This update addresses the issue. Various other issues were also addressed.; tags | advisory, x86, kernel, vulnerability; systems | linux, ubuntu; advisories | CVE-2018-12207, CVE-2019-0154, CVE-2019-0155, CVE-2019-11135, CVE-2019-15791, CVE-2019-15792, CVE-2019-15793, CVE-2019-16746, CVE-2019-17666; MD5 | 63968a584ee33d219857ed9bdd445938; Download | Favorite | View

Ubuntu Security Notice USN-4184-2: Posted Nov 14, 2019; Authored by Ubuntu | Site security.ubuntu.com; Ubuntu Security Notice 4184-2 - USN-4184-1 fixed vulnerabilities in the Linux kernel. It was discovered that the kernel fix for CVE-2019-0155 was incomplete on 64-bit Intel x86 systems. Also, the update introduced a regression that broke KVM guests where extended page tables are disabled or not supported. This update addresses both issues. Various other issues were also addressed.; tags | advisory, x86, kernel, vulnerability; systems | linux, ubuntu; advisories | CVE-2018-12207, CVE-2019-0154, CVE-2019-0155, CVE-2019-11135, CVE-2019-15098, CVE-2019-15791, CVE-2019-15792, CVE-2019-15793, CVE-2019-17052, CVE-2019-17053, CVE-2019-17054, CVE-2019-17055, CVE-2019-17056, CVE-2019-17666; MD5 | 729df00f6313e1ee60a63c8d339f79f4; Download | Favorite | View