Filtered by vendor Canonical
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Filtered by product Ubuntu Linux
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Total
4151 CVE
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2021-3600 | 4 Canonical, Fedoraproject, Linux and 1 more | 4 Ubuntu Linux, Fedora, Linux Kernel and 1 more | 2024-11-21 | 7.8 High |
| It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code. | ||||
| CVE-2021-3560 | 4 Canonical, Debian, Polkit Project and 1 more | 10 Ubuntu Linux, Debian Linux, Polkit and 7 more | 2024-11-21 | 7.8 High |
| It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. | ||||
| CVE-2021-3493 | 1 Canonical | 1 Ubuntu Linux | 2024-11-21 | 8.8 High |
| The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting of file capabilities on files in an underlying file system. Due to the combination of unprivileged user namespaces along with a patch carried in the Ubuntu kernel to allow unprivileged overlay mounts, an attacker could use this to gain elevated privileges. | ||||
| CVE-2021-3492 | 1 Canonical | 1 Ubuntu Linux | 2024-11-21 | 8.8 High |
| Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could use this to cause a denial of service (kernel memory exhaustion) or gain privileges via executing arbitrary code. AKA ZDI-CAN-13562. | ||||
| CVE-2021-3491 | 2 Canonical, Linux | 2 Ubuntu Linux, Linux Kernel | 2024-11-21 | 7.8 High |
| The io_uring subsystem in the Linux kernel allowed the MAX_RW_COUNT limit to be bypassed in the PROVIDE_BUFFERS operation, which led to negative values being usedin mem_rw when reading /proc/<PID>/mem. This could be used to create a heap overflow leading to arbitrary code execution in the kernel. It was addressed via commit d1f82808877b ("io_uring: truncate lengths larger than MAX_RW_COUNT on provide buffers") (v5.13-rc1) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced in ddf0322db79c ("io_uring: add IORING_OP_PROVIDE_BUFFERS") (v5.7-rc1). | ||||
| CVE-2021-3490 | 2 Canonical, Linux | 2 Ubuntu Linux, Linux Kernel | 2024-11-21 | 7.8 High |
| The eBPF ALU32 bounds tracking for bitwise ops (AND, OR and XOR) in the Linux kernel did not properly update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and therefore, arbitrary code execution. This issue was fixed via commit 049c4e13714e ("bpf: Fix alu32 const subreg bound tracking on bitwise operations") (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. The AND/OR issues were introduced by commit 3f50f132d840 ("bpf: Verifier, do explicit ALU32 bounds tracking") (5.7-rc1) and the XOR variant was introduced by 2921c90d4718 ("bpf:Fix a verifier failure with xor") ( 5.10-rc1). | ||||
| CVE-2021-3489 | 3 Canonical, Linux, Redhat | 3 Ubuntu Linux, Linux Kernel, Enterprise Linux | 2024-11-21 | 7.8 High |
| The eBPF RINGBUF bpf_ringbuf_reserve() function in the Linux kernel did not check that the allocated size was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee ("bpf, ringbuf: Deny reserve of buffers larger than ringbuf") (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced via 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it") (v5.8-rc1). | ||||
| CVE-2021-3444 | 3 Canonical, Debian, Linux | 3 Ubuntu Linux, Debian Linux, Linux Kernel | 2024-11-21 | 7.8 High |
| The bpf verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker with the ability to load bpf programs could use this gain out-of-bounds reads in kernel memory leading to information disclosure (kernel memory), and possibly out-of-bounds writes that could potentially lead to code execution. This issue was addressed in the upstream kernel in commit 9b00f1b78809 ("bpf: Fix truncation handling for mod32 dst reg wrt zero") and in Linux stable kernels 5.11.2, 5.10.19, and 5.4.101. | ||||
| CVE-2021-3155 | 1 Canonical | 2 Snapd, Ubuntu Linux | 2024-11-21 | 3.8 Low |
| snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only permissions. This could allow a local attacker to read information that should have been private. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1 | ||||
| CVE-2021-32555 | 1 Canonical | 1 Ubuntu Linux | 2024-11-21 | 7.3 High |
| It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the xorg-hwe-18.04 package apport hooks, it could expose private data to other local users. | ||||
| CVE-2021-32554 | 1 Canonical | 1 Ubuntu Linux | 2024-11-21 | 7.3 High |
| It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the xorg package apport hooks, it could expose private data to other local users. | ||||
| CVE-2021-32553 | 2 Canonical, Oracle | 2 Ubuntu Linux, Openjdk | 2024-11-21 | 7.3 High |
| It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-17 package apport hooks, it could expose private data to other local users. | ||||
| CVE-2021-32552 | 1 Canonical | 1 Ubuntu Linux | 2024-11-21 | 7.3 High |
| It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-16 package apport hooks, it could expose private data to other local users. | ||||
| CVE-2021-32551 | 1 Canonical | 1 Ubuntu Linux | 2024-11-21 | 7.3 High |
| It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-15 package apport hooks, it could expose private data to other local users. | ||||
| CVE-2021-32550 | 1 Canonical | 1 Ubuntu Linux | 2024-11-21 | 7.3 High |
| It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-14 package apport hooks, it could expose private data to other local users. | ||||
| CVE-2021-32549 | 1 Canonical | 1 Ubuntu Linux | 2024-11-21 | 7.3 High |
| It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-13 package apport hooks, it could expose private data to other local users. | ||||
| CVE-2021-32548 | 1 Canonical | 1 Ubuntu Linux | 2024-11-21 | 7.3 High |
| It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-8 package apport hooks, it could expose private data to other local users. | ||||
| CVE-2021-32547 | 1 Canonical | 1 Ubuntu Linux | 2024-11-21 | 7.3 High |
| It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-lts package apport hooks, it could expose private data to other local users. | ||||
| CVE-2021-27364 | 6 Canonical, Debian, Linux and 3 more | 13 Ubuntu Linux, Debian Linux, Linux Kernel and 10 more | 2024-11-21 | 7.1 High |
| An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is adversely affected by the ability of an unprivileged user to craft Netlink messages. | ||||
| CVE-2020-9490 | 7 Apache, Canonical, Debian and 4 more | 28 Http Server, Ubuntu Linux, Debian Linux and 25 more | 2024-11-21 | 7.5 High |
| Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers. | ||||