USN-4915-1 linux-oem-5.6 vulnerabilities

It was discovered that the overlayfs implementation in the Linux kernel did not properly validate the application of file system capabilities with respect to user namespaces. A local attacker could use this to gain elevated privileges. CVE-2021-3493 Vincent Dehors discovered that the shiftfs file...

PT-2024-11081 · Linux +4 · Linux Kernel +4

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.12.0-rc5 Description: The issue arises from the overlayfs not putting temporary dentry when there is a metacopy error, leading to dentry leaks when shutting down the related superblock. This results in busy...

DEBIAN-CVE-2020-16120

Overlayfs did not properly perform permission checking when copying up files in an overlayfs and could be exploited from within a user namespace, if, for example, unprivileged user namespaces were allowed. It was possible to have a file not readable by an unprivileged user to be copied to a...

CVE-2020-16120

Overlayfs did not properly perform permission checking when copying up files in an overlayfs and could be exploited from within a user namespace, if, for example, unprivileged user namespaces were allowed. It was possible to have a file not readable by an unprivileged user to be copied to a...

CVE-2021-26910

Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions because there is a TOCTOU race condition between a stat operation and an OverlayFS mount operation...

CVE-2020-16120

A flaw was found in the User namespace on an overlay filesystem in the Linux Kernel, Where a file with no access privilege was able to copy the file to a user defined mount point. An attacker with a special user privilege locally may lead to a kernel information leak problem. Mitigation Red Hat...

USN-4367-2 linux regression

USN-4367-1 fixed vulnerabilities in the 5.4 Linux kernel. Unfortunately, that update introduced a regression in overlayfs. This update corrects the problem. We apologize for the inconvenience. Original advisory details: It was discovered that the btrfs implementation in the Linux kernel did not...

USN-4369-2 linux, linux-raspi2, linux-raspi2-5.3 regression

USN-4369-1 fixed vulnerabilities in the 5.3 Linux kernel. Unfortunately, that update introduced a regression in overlayfs. This update corrects the problem. We apologize for the inconvenience. Original advisory details: It was discovered that the btrfs implementation in the Linux kernel did not...

USN-4209-1 linux, linux-aws, linux-aws-5.0, linux-gcp, linux-gke-5.0, linux-hwe, linux-kvm, linux-oem-osp1, linux-oracle, linux-oracle-5.0, linux-raspi2 vulnerabilities

Jann Horn discovered that the OverlayFS and ShiftFS Drivers in the Linux kernel did not properly handle reference counting during memory mapping operations when used in conjunction with AUFS. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary...

PT-2019-5308

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to the fixed version Ubuntu kernel series 5.0 and 5.3 Description The issue is related to the Overlayfs and ShiftFS drivers in the Linux kernel, specifically with operations on a resource after its expiration or...

kernel: overlayfs: NULL pointer dereference in ovl_posix_acl_create function in fs/overlayfs/dir.c

A vulnerability was found in Linux kernel's implementation of overlayfs. An attacker with local access can create a denial of service situation via NULL pointer dereference in ovlposixaclcreate function in fs/overlayfs/dir.c. This can allow attackers with ability to create directories on overlayf...

PT-2019-5609 · Linux +2 · Linux Kernel +2

Name of the Vulnerable Software and Affected Versions: Linux kernel versions up to 3.10 Description: A denial of service situation can be created by an attacker with local access via a NULL pointer dereference in the ovl posix acl create function in fs/overlayfs/dir.c. This allows attackers who c...

UBUNTU-CVE-2018-16597

An issue was discovered in the Linux kernel before 4.8. Incorrect access checking in overlayfs mounts could be used by local attackers to modify or truncate files in the underlying filesystem...

kernel: Memory leaks in xfs_attr_list.c error paths

A flaw was found in the Linux kernel's implementation of XFS file attributes. Two memory leaks were detected in xfsattrshortformlist and xfsattr3leaflistint when running a docker container backed by xfs/overlay2. A dedicated attacker could possible exhaust all memory and create a denial of servic...

DEBIAN-CVE-2014-9922

The eCryptfs subsystem in the Linux kernel before 3.18 allows local users to gain privileges via a large filesystem stack that includes an overlayfs layer, related to fs/ecryptfs/main.c and fs/overlayfs/super.c...

kernel: vfs: missing detection of hardlinks in vfs_rename() on overlayfs

A flaw was found that the vfsrename function did not detect hard links on overlayfs. A local, unprivileged user could use the rename syscall on overlayfs on top of xfs to crash the system...

kernel: overlayfs file truncation without permissions

An issue was discovered in the Linux kernel where an incorrect access check in overlayfs mounts could be used by local attackers to modify or truncate files in the underlying filesystem...

kernel: vfs: missing detection of hardlinks in vfs_rename() on overlayfs

A flaw was found that the vfsrename function did not detect hard links on overlayfs. A local, unprivileged user could use the rename syscall on overlayfs on top of xfs to crash the system...

DEBIAN-CVE-2015-8953

fs/overlayfs/copyup.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service dentry reference leak via filesystem operations on a large file in a lower overlayfs layer...

CVE-2015-8953

fs/overlayfs/copyup.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service dentry reference leak via filesystem operations on a large file in a lower overlayfs layer...