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Linux : Security Vulnerabilities (CVSS score between 2 and 2.99)

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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-2021-43976 DoS 2021-11-17 2021-11-19
2.1
None Local Low Not required None None Partial
In the Linux kernel through 5.15.2, mwifiex_usb_recv in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker (who can connect a crafted USB device) to cause a denial of service (skb_over_panic).
2 CVE-2021-43389 125 2021-11-04 2021-11-09
2.1
None Local Low Not required None None Partial
An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c.
3 CVE-2021-38209 203 2021-08-08 2021-08-12
2.1
None Local Low Not required Partial None None
net/netfilter/nf_conntrack_standalone.c in the Linux kernel before 5.12.2 allows observation of changes in any net namespace because these changes are leaked into all other net namespaces. This is related to the NF_SYSCTL_CT_MAX, NF_SYSCTL_CT_EXPECT_MAX, and NF_SYSCTL_CT_BUCKETS sysctls.
4 CVE-2021-38208 476 DoS 2021-08-08 2021-09-21
2.1
None Local Low Not required None None Partial
net/nfc/llcp_sock.c in the Linux kernel before 5.12.10 allows local unprivileged users to cause a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call.
5 CVE-2021-38206 476 DoS 2021-08-08 2021-08-12
2.1
None Local Low Not required None None Partial
The mac80211 subsystem in the Linux kernel before 5.12.13, when a device supporting only 5 GHz is used, allows attackers to cause a denial of service (NULL pointer dereference in the radiotap parser) by injecting a frame with 802.11a rates.
6 CVE-2021-38205 824 2021-08-08 2021-11-12
2.1
None Local Low Not required None Partial None
drivers/net/ethernet/xilinx/xilinx_emaclite.c in the Linux kernel before 5.13.3 makes it easier for attackers to defeat an ASLR protection mechanism because it prints a kernel pointer (i.e., the real IOMEM pointer).
7 CVE-2021-38203 770 DoS 2021-08-08 2021-10-07
2.1
None Local Low Not required None None Partial
btrfs in the Linux kernel before 5.13.4 allows attackers to cause a denial of service (deadlock) via processes that trigger allocation of new system chunks during times when there is a shortage of free space in the system space_info.
8 CVE-2021-38200 476 DoS 2021-08-08 2021-08-12
2.1
None Local Low Not required None None Partial
arch/powerpc/perf/core-book3s.c in the Linux kernel before 5.12.13, on systems with perf_event_paranoid=-1 and no specific PMU driver support registered, allows local users to cause a denial of service (perf_instruction_pointer NULL pointer dereference and OOPS) via a "perf record" command.
9 CVE-2021-38198 2021-08-08 2021-11-11
2.1
None Local Low Not required None None Partial
arch/x86/kvm/mmu/paging_tmpl.h in the Linux kernel before 5.12.11 incorrectly computes the access permissions of a shadow page, leading to a missing guest protection page fault.
10 CVE-2021-35477 203 Bypass +Info 2021-08-02 2021-11-11
2.1
None Local Low Not required Partial None None
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.
11 CVE-2021-34693 909 +Info 2021-06-14 2021-09-20
2.1
None Local Low Not required Partial None None
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.
12 CVE-2021-34556 203 Bypass +Info 2021-08-02 2021-10-16
2.1
None Local Low Not required Partial None None
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack.
13 CVE-2021-31829 863 2021-05-06 2021-06-23
2.1
None Local Low Not required Partial None None
kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.
14 CVE-2021-30178 476 2021-04-07 2021-06-04
2.1
None Local Low Not required None None Partial
An issue was discovered in the Linux kernel through 5.11.11. synic_get in arch/x86/kvm/hyperv.c has a NULL pointer dereference for certain accesses to the SynIC Hyper-V context, aka CID-919f4ebc5987.
15 CVE-2021-30002 772 2021-04-02 2021-06-23
2.1
None Local Low Not required None None Partial
An issue was discovered in the Linux kernel before 5.11.3 when a webcam device exists. video_usercopy in drivers/media/v4l2-core/v4l2-ioctl.c has a memory leak for large arguments, aka CID-fb18802a338b.
16 CVE-2021-29647 +Info 2021-03-30 2021-06-23
2.1
None Local Low Not required Partial None None
An issue was discovered in the Linux kernel before 5.11.11. qrtr_recvmsg in net/qrtr/qrtr.c allows attackers to obtain sensitive information from kernel memory because of a partially uninitialized data structure, aka CID-50535249f624.
17 CVE-2021-29646 2021-03-30 2021-04-05
2.1
None Local Low Not required None None Partial
An issue was discovered in the Linux kernel before 5.11.11. tipc_nl_retrieve_key in net/tipc/node.c does not properly validate certain data sizes, aka CID-0217ed2848e8.
18 CVE-2021-29155 125 +Info 2021-04-20 2021-06-23
2.1
None Local Low Not required Partial None None
An issue was discovered in the Linux kernel through 5.11.x. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory. Specifically, for sequences of pointer arithmetic operations, the pointer modification performed by the first operation is not correctly accounted for when restricting subsequent operations.
19 CVE-2021-28950 834 2021-03-20 2021-06-23
2.1
None Local Low Not required None None Partial
An issue was discovered in fs/fuse/fuse_i.h in the Linux kernel before 5.11.8. A "stall on CPU" can occur because a retry loop continually finds the same bad inode, aka CID-775c5033a0d1.
20 CVE-2021-28688 665 2021-04-06 2021-06-23
2.1
None Local Low Not required None None Partial
The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains. All Linux versions having the fix for XSA-365 applied are vulnerable. XSA-365 was classified to affect versions back to at least 3.11.
21 CVE-2021-28039 400 2021-03-05 2021-04-09
2.1
None Local Low Not required None None Partial
An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG.
22 CVE-2021-25433 863 2021-07-08 2021-07-14
2.1
None Local Low Not required None None Partial
Improper authorization vulnerability in Tizen factory reset policy prior to Firmware update JUL-2021 Release allows untrusted applications to perform factory reset using dbus signal.
23 CVE-2021-21781 908 +Info 2021-08-18 2021-08-26
2.1
None Local Low Not required Partial None None
An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11
24 CVE-2021-20239 200 +Info 2021-05-28 2021-06-02
2.1
None Local Low Not required Partial None None
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.
25 CVE-2021-20219 697 DoS 2021-03-23 2021-03-26
2.1
None Local Low Not required None None Partial
A denial of service vulnerability was found in n_tty_receive_char_special in drivers/tty/n_tty.c of the Linux kernel. In this flaw a local attacker with a normal user privilege could delay the loop (due to a changing ldata->read_head, and a missing sanity check) and cause a threat to the system availability.
26 CVE-2021-20177 125 2021-05-26 2021-06-02
2.1
None Local Low Not required None None Partial
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.
27 CVE-2021-3679 400 DoS 2021-08-05 2021-10-18
2.1
None Local Low Not required None None Partial
A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.
28 CVE-2021-3655 909 2021-08-05 2021-10-16
2.1
None Local Low Not required Partial None None
A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory.
29 CVE-2021-3564 416 Mem. Corr. 2021-06-08 2021-07-08
2.1
None Local Low Not required None None Partial
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.
30 CVE-2020-36312 401 2021-04-07 2021-04-13
2.1
None Local Low Not required None None Partial
An issue was discovered in the Linux kernel before 5.8.10. virt/kvm/kvm_main.c has a kvm_io_bus_unregister_dev memory leak upon a kmalloc failure, aka CID-f65886606c2d.
31 CVE-2020-36311 DoS 2021-04-07 2021-07-21
2.1
None Local Low Not required None None Partial
An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.
32 CVE-2020-36310 835 2021-04-07 2021-04-13
2.1
None Local Low Not required None None Partial
An issue was discovered in the Linux kernel before 5.8. arch/x86/kvm/svm/svm.c allows a set_memory_region_test infinite loop for certain nested page faults, aka CID-e72436bc3a52.
33 CVE-2020-29660 416 2020-12-09 2021-11-12
2.1
None Local Low Not required Partial None None
A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24.
34 CVE-2020-29373 22 Dir. Trav. 2020-11-28 2020-12-02
2.1
None Local Low Not required Partial None None
An issue was discovered in fs/io_uring.c in the Linux kernel before 5.6. It unsafely handles the root directory during path lookups, and thus a process inside a mount namespace can escape to unintended filesystem locations, aka CID-ff002b30181d.
35 CVE-2020-29371 908 2020-11-28 2020-12-02
2.1
None Local Low Not required Partial None None
An issue was discovered in romfs_dev_read in fs/romfs/storage.c in the Linux kernel before 5.8.4. Uninitialized memory leaks to userspace, aka CID-bcf85fcedfdd.
36 CVE-2020-28588 681 +Info 2021-05-10 2021-05-19
2.1
None Local Low Not required Partial None None
An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel 5.1 Stable and 5.4.66. More specifically, this issue has been introduced in v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) and is still present in v5.10-rc4, so it’s likely that all versions in between are affected. An attacker can read /proc/pid/syscall to trigger this vulnerability, which leads to the kernel leaking memory contents.
37 CVE-2020-27830 476 2021-05-13 2021-09-07
2.1
None Local Low Not required None None Partial
A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash.
38 CVE-2020-27194 119 Overflow 2020-10-16 2020-10-30
2.1
None Local Low Not required None None Partial
An issue was discovered in the Linux kernel before 5.8.15. scalar32_min_max_or in kernel/bpf/verifier.c mishandles bounds tracking during use of 64-bit values, aka CID-5b9fbeb75b6a.
39 CVE-2020-27152 835 2020-11-06 2020-11-16
2.1
None Local Low Not required None None Partial
An issue was discovered in ioapic_lazy_update_eoi in arch/x86/kvm/ioapic.c in the Linux kernel before 5.9.2. It has an infinite loop related to improper interaction between a resampler and edge triggering, aka CID-77377064c3a9.
40 CVE-2020-26088 276 Bypass 2020-09-24 2020-11-02
2.1
None Local Low Not required None Partial None
A missing CAP_NET_RAW check in NFC socket creation in net/nfc/rawsock.c in the Linux kernel before 5.8.2 could be used by local attackers to create raw sockets, bypassing security mechanisms, aka CID-26896f01467a.
41 CVE-2020-24588 306 2021-05-11 2021-10-28
2.9
None Local Network Medium Not required None Partial None
The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an adversary can abuse this to inject arbitrary network packets.
42 CVE-2020-24586 2021-05-11 2021-10-28
2.9
None Local Network Medium Not required Partial None None
The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that received fragments be cleared from memory after (re)connecting to a network. Under the right circumstances, when another device sends fragmented frames encrypted using WEP, CCMP, or GCMP, this can be abused to inject arbitrary network packets and/or exfiltrate user data.
43 CVE-2020-16120 2021-02-10 2021-11-18
2.1
None Local Low Not required Partial None None
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 mountpoint controlled by the user, like a removable device. This was introduced in kernel version 4.19 by commit d1d04ef ("ovl: stack file ops"). This was fixed in kernel version 5.8 by commits 56230d9 ("ovl: verify permissions in ovl_path_open()"), 48bd024 ("ovl: switch to mounter creds in readdir") and 05acefb ("ovl: check permission to open real file"). Additionally, commits 130fdbc ("ovl: pass correct flags for opening real directory") and 292f902 ("ovl: call secutiry hook in ovl_real_ioctl()") in kernel 5.8 might also be desired or necessary. These additional commits introduced a regression in overlay mounts within user namespaces which prevented access to files with ownership outside of the user namespace. This regression was mitigated by subsequent commit b6650da ("ovl: do not fail because of O_NOATIMEi") in kernel 5.11.
44 CVE-2020-15393 772 2020-06-29 2021-07-21
2.1
None Local Low Not required None None Partial
In the Linux kernel 4.4 through 5.7.6, usbtest_disconnect in drivers/usb/misc/usbtest.c has a memory leak, aka CID-28ebeb8db770.
45 CVE-2020-14314 125 2020-09-15 2020-11-02
2.1
None Local Low Not required None None Partial
A memory out-of-bounds read flaw was found in the Linux kernel before 5.9-rc2 with the ext3/ext4 file system, in the way it accesses a directory with broken indexing. This flaw allows a local user to crash the system if the directory exists. The highest threat from this vulnerability is to system availability.
46 CVE-2020-14304 755 2020-09-15 2020-09-24
2.1
None Local Low Not required Partial None None
A memory disclosure flaw was found in the Linux kernel's ethernet drivers, in the way it read data from the EEPROM of the device. This flaw allows a local user to read uninitialized values from the kernel memory. The highest threat from this vulnerability is to confidentiality.
47 CVE-2020-12768 772 2020-05-09 2021-07-21
2.1
None Local Low Not required None None Partial
** DISPUTED ** An issue was discovered in the Linux kernel before 5.6. svm_cpu_uninit in arch/x86/kvm/svm.c has a memory leak, aka CID-d80b64ff297e. NOTE: third parties dispute this issue because it's a one-time leak at the boot, the size is negligible, and it can't be triggered at will.
48 CVE-2020-12656 772 2020-05-05 2021-07-21
2.1
None Local Low Not required None None Partial
** DISPUTED ** gss_mech_free in net/sunrpc/auth_gss/gss_mech_switch.c in the rpcsec_gss_krb5 implementation in the Linux kernel through 5.6.10 lacks certain domain_release calls, leading to a memory leak. Note: This was disputed with the assertion that the issue does not grant any access not already available. It is a problem that on unloading a specific kernel module some memory is leaked, but loading kernel modules is a privileged operation. A user could also write a kernel module to consume any amount of memory they like and load that replicating the effect of this bug.
49 CVE-2020-12655 400 2020-05-05 2020-11-02
2.1
None Local Low Not required None None Partial
An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10. Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767.
50 CVE-2020-11669 2020-04-10 2020-05-28
2.1
None Local Low Not required None None Partial
An issue was discovered in the Linux kernel before 5.2 on the powerpc platform. arch/powerpc/kernel/idle_book3s.S does not have save/restore functionality for PNV_POWERSAVE_AMR, PNV_POWERSAVE_UAMOR, and PNV_POWERSAVE_AMOR, aka CID-53a712bae5dd.
Total number of vulnerabilities : 445   Page : 1 (This Page)2 3 4 5 6 7 8 9
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