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There are 86 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2021-33624

In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted (e.g., because of type confusion) and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db.

Published: June 23, 2021; 12:15:07 PM -0400
V3.x:(not available)
V2.0:(not available)
CVE-2021-32078

An Out-of-Bounds Read was discovered in arch/arm/mach-footbridge/personal-pci.c in the Linux kernel through 5.12.11 because of the lack of a check for a value that shouldn't be negative, e.g., access to element -2 of an array, aka CID-298a58e165e4.

Published: June 17, 2021; 11:15:07 AM -0400
V3.1: 7.1 HIGH
V2.0: 6.6 MEDIUM
CVE-2021-34693

net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized.

Published: June 14, 2021; 6:15:20 PM -0400
V3.1: 5.5 MEDIUM
V2.0: 2.1 LOW
CVE-2021-3564

A flaw double-free memory corruption in the Linux kernel HCI device initialization subsystem was found in the way user attach malicious HCI TTY Bluetooth device. A local user could use this flaw to crash the system. This flaw affects all the Linux kernel versions starting from 3.13.

Published: June 08, 2021; 8:15:11 AM -0400
V3.1: 5.5 MEDIUM
V2.0: 2.1 LOW
CVE-2020-36387

An issue was discovered in the Linux kernel before 5.8.2. fs/io_uring.c has a use-after-free related to io_async_task_func and ctx reference holding, aka CID-6d816e088c35.

Published: June 07, 2021; 4:15:08 PM -0400
V3.1: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2020-36386

An issue was discovered in the Linux kernel before 5.8.1. net/bluetooth/hci_event.c has a slab out-of-bounds read in hci_extended_inquiry_result_evt, aka CID-51c19bf3d5cf.

Published: June 07, 2021; 4:15:08 PM -0400
V3.1: 5.5 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2019-25045

An issue was discovered in the Linux kernel before 5.0.19. The XFRM subsystem has a use-after-free, related to an xfrm_state_fini panic, aka CID-dbb2483b2a46.

Published: June 07, 2021; 4:15:07 PM -0400
V3.1: 7.8 HIGH
V2.0: 4.6 MEDIUM
CVE-2018-25015

An issue was discovered in the Linux kernel before 4.14.16. There is a use-after-free in net/sctp/socket.c for a held lock after a peel off, aka CID-a0ff660058b8.

Published: June 07, 2021; 4:15:07 PM -0400
V3.1: 7.8 HIGH
V2.0: 4.6 MEDIUM
CVE-2020-36385

An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.

Published: June 07, 2021; 8:15:08 AM -0400
V3.1: 7.8 HIGH
V2.0: 6.8 MEDIUM
CVE-2021-3491

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).

Published: June 03, 2021; 10:15:07 PM -0400
V3.1: 8.8 HIGH
V2.0: 7.2 HIGH
CVE-2021-3490

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).

Published: June 03, 2021; 10:15:07 PM -0400
V3.1: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2021-3489

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).

Published: June 03, 2021; 10:15:07 PM -0400
V3.1: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2020-10742

A flaw was found in the Linux kernel. An index buffer overflow during Direct IO write leading to the NFS client to crash. In some cases, a reach out of the index after one memory allocation by kmalloc will cause a kernel panic. The highest threat from this vulnerability is to data confidentiality and system availability.

Published: June 02, 2021; 7:15:07 AM -0400
V3.1: 6.0 MEDIUM
V2.0: 3.6 LOW
CVE-2021-20292

There is a flaw reported in the Linux kernel in versions before 5.9 in drivers/gpu/drm/nouveau/nouveau_sgdma.c in nouveau_sgdma_create_ttm in Nouveau DRM subsystem. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker with a local account with a root privilege, can leverage this vulnerability to escalate privileges and execute code in the context of the kernel.

Published: May 28, 2021; 7:15:08 AM -0400
V3.1: 6.7 MEDIUM
V2.0: 7.2 HIGH
CVE-2021-20239

A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality.

Published: May 28, 2021; 7:15:08 AM -0400
V3.1: 3.3 LOW
V2.0: 2.1 LOW
CVE-2020-10774

A memory disclosure flaw was found in the Linux kernel's versions before 4.18.0-193.el8 in the sysctl subsystem when reading the /proc/sys/kernel/rh_features file. This flaw allows a local user to read uninitialized values from the kernel memory. The highest threat from this vulnerability is to confidentiality.

Published: May 27, 2021; 3:15:07 PM -0400
V3.1: 5.5 MEDIUM
V2.0: 2.1 LOW
CVE-2021-33200

kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.

Published: May 27, 2021; 9:15:08 AM -0400
V3.1: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2021-20177

A flaw was found in the Linux kernel's implementation of string matching within a packet. A privileged user (with root or CAP_NET_ADMIN) when inserting iptables rules could insert a rule which can panic the system. Kernel before kernel 5.5-rc1 is affected.

Published: May 26, 2021; 5:15:08 PM -0400
V3.1: 4.4 MEDIUM
V2.0: 2.1 LOW
CVE-2020-27815

A flaw was found in the JFS filesystem code in the Linux Kernel which allows a local attacker with the ability to set extended attributes to panic the system, causing memory corruption or escalating privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Published: May 26, 2021; 9:15:07 AM -0400
V3.1: 7.8 HIGH
V2.0: 6.1 MEDIUM
CVE-2020-25669

A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free.

Published: May 26, 2021; 8:15:15 AM -0400
V3.1: 7.8 HIGH
V2.0: 7.2 HIGH