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Linux » Linux Kernel : Security Vulnerabilities (CVSS score >= 7)

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# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2013-1763 20 3 +Priv 2013-02-28 2014-05-16
7.2
None Local Low Not required Complete Complete Complete
Array index error in the __sock_diag_rcv_msg function in net/core/sock_diag.c in the Linux kernel before 3.7.10 allows local users to gain privileges via a large family value in a Netlink message.
2 CVE-2009-2692 119 2 Overflow +Priv 2009-08-14 2018-10-10
7.2
None Local Low Not required Complete Complete Complete
The Linux kernel 2.6.0 through 2.6.30.4, and 2.4.4 through 2.4.37.4, does not initialize all function pointers for socket operations in proto_ops structures, which allows local users to trigger a NULL pointer dereference and gain privileges by using mmap to map page zero, placing arbitrary code on this page, and then invoking an unavailable operation, as demonstrated by the sendpage operation (sock_sendpage function) on a PF_PPPOX socket.
3 CVE-2015-1328 264 1 2016-11-28 2017-09-21
7.2
None Local Low Not required Complete Complete Complete
The overlayfs implementation in the linux (aka Linux kernel) package before 3.19.0-21.21 in Ubuntu through 15.04 does not properly check permissions for file creation in the upper filesystem directory, which allows local users to obtain root access by leveraging a configuration in which overlayfs is permitted in an arbitrary mount namespace.
4 CVE-2014-9322 269 1 +Priv 2014-12-17 2020-08-14
7.2
None Local Low Not required Complete Complete Complete
arch/x86/kernel/entry_64.S in the Linux kernel before 3.17.5 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to gain privileges by triggering an IRET instruction that leads to access to a GS Base address from the wrong space.
5 CVE-2014-3631 1 DoS 2014-09-28 2015-03-18
7.2
None Local Low Not required Complete Complete Complete
The assoc_array_gc function in the associative-array implementation in lib/assoc_array.c in the Linux kernel before 3.16.3 does not properly implement garbage collection, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via multiple "keyctl newring" operations followed by a "keyctl timeout" operation.
6 CVE-2014-3153 269 1 +Priv 2014-06-07 2021-02-08
7.2
None Local Low Not required Complete Complete Complete
The futex_requeue function in kernel/futex.c in the Linux kernel through 3.14.5 does not ensure that calls have two different futex addresses, which allows local users to gain privileges via a crafted FUTEX_REQUEUE command that facilitates unsafe waiter modification.
7 CVE-2013-2094 189 1 +Priv 2013-05-14 2017-01-07
7.2
None Local Low Not required Complete Complete Complete
The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows local users to gain privileges via a crafted perf_event_open system call.
8 CVE-2021-33200 787 2021-05-27 2021-06-02
7.2
None Local Low Not required Complete Complete Complete
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.
9 CVE-2021-32606 416 2021-05-11 2021-06-04
7.2
None Local Low Not required Complete Complete Complete
In the Linux kernel 5.11 through 5.12.2, isotp_setsockopt in net/can/isotp.c allows privilege escalation to root by leveraging a use-after-free. (This does not affect earlier versions that lack CAN ISOTP SF_BROADCAST support.)
10 CVE-2021-29266 416 2021-03-26 2021-05-17
7.2
None Local Low Not required Complete Complete Complete
An issue was discovered in the Linux kernel before 5.11.9. drivers/vhost/vdpa.c has a use-after-free because v->config_ctx has an invalid value upon re-opening a character device, aka CID-f6bbf0010ba0.
11 CVE-2021-29154 77 Exec Code 2021-04-08 2021-06-08
7.2
None Local Low Not required Complete Complete Complete
BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c.
12 CVE-2021-28972 120 Overflow 2021-03-22 2021-04-30
7.2
None Local Low Not required Complete Complete Complete
In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination, aka CID-cc7a0bb058b8.
13 CVE-2021-28660 787 2021-03-17 2021-03-31
7.2
None Local Low Not required Complete Complete Complete
rtw_wx_set_scan in drivers/staging/rtl8188eu/os_dep/ioctl_linux.c in the Linux kernel through 5.11.6 allows writing beyond the end of the ->ssid[] array. NOTE: from the perspective of kernel.org releases, CVE IDs are not normally used for drivers/staging/* (unfinished work); however, system integrators may have situations in which a drivers/staging issue is relevant to their own customer base.
14 CVE-2021-28375 269 2021-03-15 2021-04-01
7.2
None Local Low Not required Complete Complete Complete
An issue was discovered in the Linux kernel through 5.11.6. fastrpc_internal_invoke in drivers/misc/fastrpc.c does not prevent user applications from sending kernel RPC messages, aka CID-20c40794eb85. This is a related issue to CVE-2019-2308.
15 CVE-2021-20292 416 Exec Code 2021-05-28 2021-06-02
7.2
None Local Low Not required Complete Complete Complete
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.
16 CVE-2021-3491 787 Exec Code Overflow Bypass 2021-06-04 2021-06-11
7.2
None Local Low Not required Complete Complete Complete
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).
17 CVE-2021-3490 125 Exec Code 2021-06-04 2021-06-14
7.2
None Local Low Not required Complete Complete Complete
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).
18 CVE-2021-3489 787 Exec Code 2021-06-04 2021-06-14
7.2
None Local Low Not required Complete Complete Complete
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).
19 CVE-2021-3347 416 Exec Code 2021-01-29 2021-03-15
7.2
None Local Low Not required Complete Complete Complete
An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.
20 CVE-2020-36387 416 2021-06-07 2021-06-21
7.2
None Local Low Not required Complete Complete Complete
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.
21 CVE-2020-36158 120 Exec Code 2021-01-05 2021-03-09
7.2
None Local Low Not required Complete Complete Complete
mwifiex_cmd_802_11_ad_hoc_start in drivers/net/wireless/marvell/mwifiex/join.c in the Linux kernel through 5.10.4 might allow remote attackers to execute arbitrary code via a long SSID value, aka CID-5c455c5ab332.
22 CVE-2020-35499 476 +Info 2021-02-19 2021-02-25
7.2
None Local Low Not required Complete Complete Complete
A NULL pointer dereference flaw in Linux kernel versions prior to 5.11 may be seen if sco_sock_getsockopt function in net/bluetooth/sco.c do not have a sanity check for a socket connection, when using BT_SNDMTU/BT_RCVMTU for SCO sockets. This could allow a local attacker with a special user privilege to crash the system (DOS) or leak kernel internal information.
23 CVE-2020-29661 416 2020-12-09 2021-03-09
7.2
None Local Low Not required Complete Complete Complete
A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.
24 CVE-2020-29569 252 +Info 2020-12-15 2021-03-15
7.2
None Local Low Not required Complete Complete Complete
An issue was discovered in the Linux kernel through 5.10.1, as used with Xen through 4.14.x. The Linux kernel PV block backend expects the kernel thread handler to reset ring->xenblkd to NULL when stopped. However, the handler may not have time to run if the frontend quickly toggles between the states connect and disconnect. As a consequence, the block backend may re-use a pointer after it was freed. A misbehaving guest can trigger a dom0 crash by continuously connecting / disconnecting a block frontend. Privilege escalation and information leaks cannot be ruled out. This only affects systems with a Linux blkback.
25 CVE-2020-29534 2020-12-03 2021-06-02
7.2
None Local Low Not required Complete Complete Complete
An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94.
26 CVE-2020-27786 416 Exec Code Mem. Corr. 2020-12-11 2021-05-12
7.2
None Local Low Not required Complete Complete Complete
A flaw was found in the Linux kernel’s implementation of MIDI, where an attacker with a local account and the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to this specific memory while freed and before use causes the flow of execution to change and possibly allow for memory corruption or privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
27 CVE-2020-27777 862 2020-12-15 2020-12-22
7.2
None Local Low Not required Complete Complete Complete
A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel.
28 CVE-2020-25671 416 2021-05-26 2021-06-04
7.2
None Local Low Not required Complete Complete Complete
A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-free which might lead to privilege escalations.
29 CVE-2020-25670 416 2021-05-26 2021-06-03
7.2
None Local Low Not required Complete Complete Complete
A vulnerability was found in Linux Kernel where refcount leak in llcp_sock_bind() causing use-after-free which might lead to privilege escalations.
30 CVE-2020-25669 416 2021-05-26 2021-06-04
7.2
None Local Low Not required Complete Complete Complete
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.
31 CVE-2020-25643 20 DoS Overflow Mem. Corr. 2020-10-06 2020-11-03
7.5
None Remote Medium ??? Partial Partial Complete
A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
32 CVE-2020-25221 672 2020-09-10 2020-10-01
7.2
None Local Low Not required Complete Complete Complete
get_gate_page in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting (caused by gate page mishandling) of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit process that can use ptrace() or process_vm_readv(), aka CID-9fa2dd946743.
33 CVE-2020-25220 416 2020-09-10 2021-01-20
7.2
None Local Low Not required Complete Complete Complete
The Linux kernel 4.9.x before 4.9.233, 4.14.x before 4.14.194, and 4.19.x before 4.19.140 has a use-after-free because skcd->no_refcnt was not considered during a backport of a CVE-2020-14356 patch. This is related to the cgroups feature.
34 CVE-2020-15780 863 Bypass 2020-07-15 2020-08-21
7.2
None Local Low Not required Complete Complete Complete
An issue was discovered in drivers/acpi/acpi_configfs.c in the Linux kernel before 5.7.7. Injection of malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot restrictions, aka CID-75b0cea7bf30.
35 CVE-2020-15436 416 DoS +Priv 2020-11-23 2020-12-18
7.2
None Local Low Not required Complete Complete Complete
Use-after-free vulnerability in fs/block_dev.c in the Linux kernel before 5.8 allows local users to gain privileges or cause a denial of service by leveraging improper access to a certain error field.
36 CVE-2020-14386 787 +Priv Mem. Corr. 2020-09-16 2020-11-02
7.2
None Local Low Not required Complete Complete Complete
A flaw was found in the Linux kernel before 5.9-rc4. Memory corruption can be exploited to gain root privileges from unprivileged processes. The highest threat from this vulnerability is to data confidentiality and integrity.
37 CVE-2020-14356 476 2020-08-19 2020-11-02
7.2
None Local Low Not required Complete Complete Complete
A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found in the way when reboot the system. A local user could use this flaw to crash the system or escalate their privileges on the system.
38 CVE-2020-14331 787 2020-09-15 2021-01-13
7.2
None Local Low Not required Complete Complete Complete
A flaw was found in the Linux kernel’s implementation of the invert video code on VGA consoles when a local attacker attempts to resize the console, calling an ioctl VT_RESIZE, which causes an out-of-bounds write to occur. This flaw allows a local user with access to the VGA console to crash the system, potentially escalating their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
39 CVE-2020-14305 787 DoS 2020-12-02 2020-12-10
8.3
None Remote Medium Not required Partial Partial Complete
An out-of-bounds memory write flaw was found in how the Linux kernel’s Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
40 CVE-2020-13974 190 Overflow 2020-06-09 2021-01-04
7.2
None Local Low Not required Complete Complete Complete
An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/keyboard.c has an integer overflow if k_ascii is called several times in a row, aka CID-b86dab054059. NOTE: Members in the community argue that the integer overflow does not lead to a security issue in this case.
41 CVE-2020-12659 787 2020-05-05 2020-06-17
7.2
None Local Low Not required Complete Complete Complete
An issue was discovered in the Linux kernel before 5.6.7. xdp_umem_reg in net/xdp/xdp_umem.c has an out-of-bounds write (by a user with the CAP_NET_ADMIN capability) because of a lack of headroom validation.
42 CVE-2020-12465 120 Overflow 2020-04-29 2020-06-08
7.2
None Local Low Not required Complete Complete Complete
An array overflow was discovered in mt76_add_fragment in drivers/net/wireless/mediatek/mt76/dma.c in the Linux kernel before 5.5.10, aka CID-b102f0c522cf. An oversized packet with too many rx fragments can corrupt memory of adjacent pages.
43 CVE-2020-12464 416 2020-04-29 2020-06-22
7.2
None Local Low Not required Complete Complete Complete
usb_sg_cancel in drivers/usb/core/message.c in the Linux kernel before 5.6.8 has a use-after-free because a transfer occurs without a reference, aka CID-056ad39ee925.
44 CVE-2020-8835 119 Overflow 2020-04-02 2020-04-30
7.2
None Local Low Not required Complete Complete Complete
In the Linux kernel 5.5.0 and newer, the bpf verifier (kernel/bpf/verifier.c) did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the introducing commit was backported to that branch. This vulnerability was fixed in 5.6.1, 5.5.14, and 5.4.29. (issue is aka ZDI-CAN-10780)
45 CVE-2019-25044 416 Exec Code 2021-05-14 2021-05-21
7.2
None Local Low Not required Complete Complete Complete
The block subsystem in the Linux kernel before 5.2 has a use-after-free that can lead to arbitrary code execution in the kernel context and privilege escalation, aka CID-c3e2219216c9. This is related to blk_mq_free_rqs and blk_cleanup_queue.
46 CVE-2019-20636 787 2020-04-08 2020-06-10
7.2
None Local Low Not required Complete Complete Complete
In the Linux kernel before 5.4.12, drivers/input/input.c has out-of-bounds writes via a crafted keycode table, as demonstrated by input_set_keycode, aka CID-cb222aed03d7.
47 CVE-2019-19816 787 2019-12-17 2021-03-15
9.3
None Remote Medium Not required Complete Complete Complete
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled.
48 CVE-2019-19815 476 2019-12-17 2020-01-03
7.1
None Remote Medium Not required None None Complete
In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can cause a NULL pointer dereference in f2fs_recover_fsync_data in fs/f2fs/recovery.c. This is related to F2FS_P_SB in fs/f2fs/f2fs.h.
49 CVE-2019-19814 787 2019-12-17 2020-01-03
9.3
None Remote Medium Not required Complete Complete Complete
In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can cause __remove_dirty_segment slab-out-of-bounds write access because an array is bounded by the number of dirty types (8) but the array index can exceed this.
50 CVE-2019-19813 416 2019-12-17 2021-03-12
7.1
None Remote Medium Not required None None Complete
In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a use-after-free in __mutex_lock in kernel/locking/mutex.c. This is related to mutex_can_spin_on_owner in kernel/locking/mutex.c, __btrfs_qgroup_free_meta in fs/btrfs/qgroup.c, and btrfs_insert_delayed_items in fs/btrfs/delayed-inode.c.
Total number of vulnerabilities : 853   Page : 1 (This Page)2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
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