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CVE-2019-19449

Status Candidate

Overview

In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can lead to slab-out-of-bounds read access in f2fs_build_segment_manager in fs/f2fs/segment.c, related to init_min_max_mtime in fs/f2fs/segment.c (because the second argument to get_seg_entry is not validated).

Related Files

Ubuntu Security Notice USN-5343-1
Posted Mar 23, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5343-1 - Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain administrative privileges. It was discovered that the aufs file system in the Linux kernel did not properly restrict mount namespaces, when mounted with the non-default allow_userns option set. A local attacker could use this to gain administrative privileges.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2016-2853, CVE-2016-2854, CVE-2018-5995, CVE-2019-19449, CVE-2020-12655, CVE-2020-25670, CVE-2020-25673, CVE-2020-26139, CVE-2020-26147, CVE-2020-26555, CVE-2020-26558, CVE-2020-36322, CVE-2020-36385, CVE-2021-20292, CVE-2021-20317, CVE-2021-23134, CVE-2021-28688, CVE-2021-28972, CVE-2021-29650, CVE-2021-32399, CVE-2021-33033, CVE-2021-33034, CVE-2021-33098, CVE-2021-34693, CVE-2021-3483, CVE-2021-3506, CVE-2021-3564
SHA-256 | f52b839ff13c30e863d5be66f515f639c4bbf6c3ac1911f54911c3a1db6abad1
Ubuntu Security Notice USN-5137-2
Posted Nov 11, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5137-2 - It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service or possibly execute arbitrary code. It was discovered that the Infiniband RDMA userspace connection manager implementation in the Linux kernel contained a race condition leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possible execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-19449, CVE-2020-36385, CVE-2021-3428, CVE-2021-34556, CVE-2021-35477, CVE-2021-3739, CVE-2021-3743, CVE-2021-3753, CVE-2021-3759
SHA-256 | 09ff616a3433c23ba31da4c5e5fa7d4a49f8585cf9a524473f6c9904ec46e4e7
Ubuntu Security Notice USN-5137-1
Posted Nov 9, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5137-1 - It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service or possibly execute arbitrary code. It was discovered that the Infiniband RDMA userspace connection manager implementation in the Linux kernel contained a race condition leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possible execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-19449, CVE-2020-36385, CVE-2021-3428, CVE-2021-34556, CVE-2021-35477, CVE-2021-3739, CVE-2021-3743, CVE-2021-3753, CVE-2021-3759, CVE-2021-42252
SHA-256 | 5fef8e7f5f28fbf71440acfa341c2c082504de263157b46ee9e4e00f76144514
Ubuntu Security Notice USN-5136-1
Posted Nov 9, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5136-1 - It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service or possibly execute arbitrary code. It was discovered that the FUSE user space file system implementation in the Linux kernel did not properly handle bad inodes 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, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2019-19449, CVE-2020-36322, CVE-2020-36385, CVE-2021-3655, CVE-2021-3743, CVE-2021-3753, CVE-2021-3759, CVE-2021-38199, CVE-2021-42252
SHA-256 | 28724fdbb83e4490e3fc8c3f933128c22cd04d060dad7537f8dd275bde2370b7
Ubuntu Security Notice USN-5120-1
Posted Oct 22, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5120-1 - It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service or possibly execute arbitrary code. It was discovered that the Linux kernel did not properly enforce certain types of entries in the Secure Boot Forbidden Signature Database protection mechanism. An attacker could use this to bypass UEFI Secure Boot restrictions. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2019-19449, CVE-2020-26541, CVE-2020-36311, CVE-2021-22543, CVE-2021-3612, CVE-2021-3759, CVE-2021-38199, CVE-2021-38207, CVE-2021-40490
SHA-256 | 0a4088e105c209023f79e6f139417f5c549e7100d2f58e29b718a130f141a387
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