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Linux » Linux Kernel : Security Vulnerabilities (CVSS score between 1 and 1.99)

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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-2021-28964 362 DoS 2021-03-22 2021-06-23
1.9
None Local Medium Not required None None Partial
A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.
2 CVE-2021-26932 2021-02-17 2021-03-31
1.9
None Local Medium Not required None None Partial
An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then loops over the results, performing follow-up actions based on the success or failure of each operation. Unfortunately, when running in PV mode, the Linux backend drivers mishandle this: Some errors are ignored, effectively implying their success from the success of related batch elements. In other cases, errors resulting from one batch element lead to further batch elements not being inspected, and hence successful ones to not be possible to properly unmap upon error recovery. Only systems with Linux backends running in PV mode are vulnerable. Linux backends run in HVM / PVH modes are not vulnerable. This affects arch/*/xen/p2m.c and drivers/xen/gntdev.c.
3 CVE-2021-26931 770 2021-02-17 2021-03-31
1.9
None Local Medium Not required None None Partial
An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests (such as out of memory conditions), it isn't correct to assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.
4 CVE-2020-27170 203 +Info 2021-03-20 2021-04-08
1.9
None Local Medium Not required Partial None None
An issue was discovered in the Linux kernel before 5.11.8. 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, aka CID-f232326f6966. This affects pointer types that do not define a ptr_limit.
5 CVE-2020-25656 416 2020-12-02 2020-12-18
1.9
None Local Medium Not required Partial None None
A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.
6 CVE-2020-25284 732 2020-09-13 2021-07-21
1.9
None Local Medium Not required None Partial None
The rbd block device driver in drivers/block/rbd.c in the Linux kernel through 5.8.9 used incomplete permission checking for access to rbd devices, which could be leveraged by local attackers to map or unmap rbd block devices, aka CID-f44d04e696fe.
7 CVE-2020-12114 362 DoS 2020-05-04 2021-06-14
1.9
None Local Medium Not required None None Partial
A pivot_root race condition in fs/namespace.c in the Linux kernel 4.4.x before 4.4.221, 4.9.x before 4.9.221, 4.14.x before 4.14.178, 4.19.x before 4.19.119, and 5.x before 5.3 allows local users to cause a denial of service (panic) by corrupting a mountpoint reference counter.
8 CVE-2020-10767 2020-09-15 2020-09-23
1.9
None Local Medium Not required Partial None None
A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB (Indirect Branch Prediction Barrier). The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation (IBRS) is available. This flaw allows a local attacker to perform a Spectre V2 style attack when this configuration is active. The highest threat from this vulnerability is to confidentiality.
9 CVE-2019-19965 362 2019-12-25 2021-07-21
1.9
None Local Medium Not required None None Partial
In the Linux kernel through 5.4.6, there is a NULL pointer dereference in drivers/scsi/libsas/sas_discover.c because of mishandling of port disconnection during discovery, related to a PHY down race condition, aka CID-f70267f379b5.
10 CVE-2019-19039 200 +Info 2019-11-21 2021-07-21
1.9
None Local Medium Not required Partial None None
** DISPUTED ** __btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfs_print_leaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as not being a vulnerability because “1) The kernel provide facilities to restrict access to dmesg - dmesg_restrict=1 sysctl option. So it's really up to the system administrator to judge whether dmesg access shall be disallowed or not. 2) WARN/WARN_ON are widely used macros in the linux kernel. If this CVE is considered valid this would mean there are literally thousands CVE lurking in the kernel - something which clearly is not the case.”
11 CVE-2019-18660 200 +Info 2019-11-27 2020-01-28
1.9
None Local Medium Not required Partial None None
The Linux kernel before 5.4.1 on powerpc allows Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs, aka CID-39e72bf96f58. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c.
12 CVE-2019-11191 362 Bypass 2019-04-12 2019-06-17
1.9
None Local Medium Not required Partial None None
** DISPUTED ** The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is called too late in load_aout_binary() in fs/binfmt_aout.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. NOTE: the software maintainer disputes that this is a vulnerability because ASLR for a.out format executables has never been supported.
13 CVE-2019-3901 667 Bypass 2019-04-22 2020-12-04
1.9
None Local Medium Not required Partial None None
A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8.
14 CVE-2019-3016 362 2020-01-31 2020-06-10
1.9
None Local Medium Not required Partial None None
In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. The problem mainly affects AMD processors but Intel CPUs cannot be ruled out.
15 CVE-2018-19854 200 +Info 2018-12-04 2019-11-06
1.9
None Local Medium Not required Partial None None
An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547 regression but with easier exploitability because the attacker does not need a capability (however, the system must have the CONFIG_CRYPTO_USER kconfig option).
16 CVE-2017-18224 362 DoS 2018-03-12 2018-05-03
1.9
None Local Medium Not required None None Partial
In the Linux kernel before 4.15, fs/ocfs2/aops.c omits use of a semaphore and consequently has a race condition for access to the extent tree during read operations in DIRECT mode, which allows local users to cause a denial of service (BUG) by modifying a certain e_cpos field.
17 CVE-2017-18203 362 DoS 2018-02-27 2018-06-20
1.9
None Local Medium Not required None None Partial
The dm_get_from_kobject function in drivers/md/dm.c in the Linux kernel before 4.14.3 allow local users to cause a denial of service (BUG) by leveraging a race condition with __dm_destroy during creation and removal of DM devices.
18 CVE-2017-17449 200 +Info 2017-12-07 2018-05-31
1.9
None Local Medium Not required Partial None None
The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system.
19 CVE-2017-16911 200 +Info 2018-01-31 2018-08-24
1.9
None Local Medium Not required Partial None None
The vhci_hcd driver in the Linux Kernel before version 4.14.8 and 4.4.114 allows allows local attackers to disclose kernel memory addresses. Successful exploitation requires that a USB device is attached over IP.
20 CVE-2016-6156 362 DoS 2016-08-06 2016-11-28
1.9
None Local Medium Not required None None Partial
Race condition in the ec_device_ioctl_xcmd function in drivers/platform/chrome/cros_ec_dev.c in the Linux kernel before 4.7 allows local users to cause a denial of service (out-of-bounds array access) by changing a certain size value, aka a "double fetch" vulnerability.
21 CVE-2016-6136 362 Bypass 2016-08-06 2018-01-05
1.9
None Local Medium Not required None Partial None
Race condition in the audit_log_single_execve_arg function in kernel/auditsc.c in the Linux kernel through 4.7 allows local users to bypass intended character-set restrictions or disrupt system-call auditing by changing a certain string, aka a "double fetch" vulnerability.
22 CVE-2016-6130 362 +Info 2016-07-03 2016-11-28
1.9
None Local Medium Not required Partial None None
Race condition in the sclp_ctl_ioctl_sccb function in drivers/s390/char/sclp_ctl.c in the Linux kernel before 4.6 allows local users to obtain sensitive information from kernel memory by changing a certain length value, aka a "double fetch" vulnerability.
23 CVE-2015-8839 362 DoS 2016-05-02 2020-10-02
1.9
None Local Medium Not required None None Partial
Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.
24 CVE-2015-8569 200 Bypass +Info 2015-12-28 2017-11-04
1.9
None Local Medium Not required Partial None None
The (1) pptp_bind and (2) pptp_connect functions in drivers/net/ppp/pptp.c in the Linux kernel through 4.3.3 do not verify an address length, which allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted application.
25 CVE-2015-7884 200 +Info 2015-12-28 2016-12-07
1.9
None Local Medium Not required Partial None None
The vivid_fb_ioctl function in drivers/media/platform/vivid/vivid-osd.c in the Linux kernel through 4.3.3 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel memory via a crafted application.
26 CVE-2015-2830 264 Bypass 2015-05-27 2018-01-05
1.9
None Local Medium Not required None Partial None
arch/x86/kernel/entry_64.S in the Linux kernel before 3.19.2 does not prevent the TS_COMPAT flag from reaching a user-mode task, which might allow local users to bypass the seccomp or audit protection mechanism via a crafted application that uses the (1) fork or (2) close system call, as demonstrated by an attack against seccomp before 3.16.
27 CVE-2015-1420 362 Bypass 2015-03-16 2016-12-28
1.9
None Local Medium Not required Partial None None
Race condition in the handle_to_path function in fs/fhandle.c in the Linux kernel through 3.19.1 allows local users to bypass intended size restrictions and trigger read operations on additional memory locations by changing the handle_bytes value of a file handle during the execution of this function.
28 CVE-2014-8134 Bypass 2014-12-12 2020-08-14
1.9
None Local Medium Not required Partial None None
The paravirt_ops_setup function in arch/x86/kernel/kvm.c in the Linux kernel through 3.18 uses an improper paravirt_enabled setting for KVM guest kernels, which makes it easier for guest OS users to bypass the ASLR protection mechanism via a crafted application that reads a 16-bit value.
29 CVE-2014-4652 362 +Info 2014-07-03 2020-08-14
1.9
None Local Medium Not required Partial None None
Race condition in the tlv handler functionality in the snd_ctl_elem_user_tlv function in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 allows local users to obtain sensitive information from kernel memory by leveraging /dev/snd/controlCX access.
30 CVE-2014-3647 DoS 2014-11-10 2020-08-13
1.9
None Local Medium Not required None None Partial
arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.
31 CVE-2014-1446 399 +Info 2014-01-18 2017-08-29
1.9
None Local Medium Not required Partial None None
The yam_ioctl function in drivers/net/hamradio/yam.c in the Linux kernel before 3.12.8 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability for an SIOCYAMGCFG ioctl call.
32 CVE-2014-1444 399 +Info 2014-01-18 2017-08-29
1.7
None Local Low ??? Partial None None
The fst_get_iface function in drivers/net/wan/farsync.c in the Linux kernel before 3.11.7 does not properly initialize a certain data structure, which allows local users to obtain sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability for an SIOCWANDEV ioctl call.
33 CVE-2013-2898 20 +Info 2013-09-16 2013-10-31
1.9
None Local Medium Not required Partial None None
drivers/hid/hid-sensor-hub.c in the Human Interface Device (HID) subsystem in the Linux kernel through 3.11, when CONFIG_HID_SENSOR_HUB is enabled, allows physically proximate attackers to obtain sensitive information from kernel memory via a crafted device.
34 CVE-2013-2636 399 +Info 2013-03-22 2013-04-05
1.9
None Local Medium Not required Partial None None
net/bridge/br_mdb.c in the Linux kernel before 3.8.4 does not initialize certain structures, which allows local users to obtain sensitive information from kernel memory via a crafted application.
35 CVE-2013-2635 399 +Info 2013-03-22 2014-02-07
1.9
None Local Medium Not required Partial None None
The rtnl_fill_ifinfo function in net/core/rtnetlink.c in the Linux kernel before 3.8.4 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.
36 CVE-2013-2634 399 +Info 2013-03-22 2014-02-07
1.9
None Local Medium Not required Partial None None
net/dcb/dcbnl.c in the Linux kernel before 3.8.4 does not initialize certain structures, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.
37 CVE-2013-1958 264 Bypass 2013-04-24 2013-05-01
1.9
None Local Medium Not required None Partial None
The scm_check_creds function in net/core/scm.c in the Linux kernel before 3.8.6 does not properly enforce capability requirements for controlling the PID value associated with a UNIX domain socket, which allows local users to bypass intended access restrictions by leveraging the time interval during which a user namespace has been created but a PID namespace has not been created.
38 CVE-2013-0349 200 +Info 2013-02-28 2013-06-05
1.9
None Local Medium Not required Partial None None
The hidp_setup_hid function in net/bluetooth/hidp/core.c in the Linux kernel before 3.7.6 does not properly copy a certain name field, which allows local users to obtain sensitive information from kernel memory by setting a long name and making an HIDPCONNADD ioctl call.
39 CVE-2012-6549 200 +Info 2013-03-15 2013-08-22
1.9
None Local Medium Not required Partial None None
The isofs_export_encode_fh function in fs/isofs/export.c in the Linux kernel before 3.6 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel heap memory via a crafted application.
40 CVE-2012-6548 200 +Info 2013-03-15 2019-04-22
1.9
None Local Medium Not required Partial None None
The udf_encode_fh function in fs/udf/namei.c in the Linux kernel before 3.6 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel heap memory via a crafted application.
41 CVE-2012-6547 200 +Info 2013-03-15 2013-08-22
1.9
None Local Medium Not required Partial None None
The __tun_chr_ioctl function in drivers/net/tun.c in the Linux kernel before 3.6 does not initialize a certain structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.
42 CVE-2012-6546 200 +Info 2013-03-15 2019-04-22
1.9
None Local Medium Not required Partial None None
The ATM implementation in the Linux kernel before 3.6 does not initialize certain structures, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.
43 CVE-2012-6545 200 +Info 2013-03-15 2019-04-22
1.9
None Local Medium Not required Partial None None
The Bluetooth RFCOMM implementation in the Linux kernel before 3.6 does not properly initialize certain structures, which allows local users to obtain sensitive information from kernel memory via a crafted application.
44 CVE-2012-6544 200 +Info 2013-03-15 2019-04-22
1.9
None Local Medium Not required Partial None None
The Bluetooth protocol stack in the Linux kernel before 3.6 does not properly initialize certain structures, which allows local users to obtain sensitive information from kernel stack memory via a crafted application that targets the (1) L2CAP or (2) HCI implementation.
45 CVE-2012-6543 200 +Info 2013-03-15 2013-03-18
1.9
None Local Medium Not required Partial None None
The l2tp_ip6_getname function in net/l2tp/l2tp_ip6.c in the Linux kernel before 3.6 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.
46 CVE-2012-6542 200 +Info 2013-03-15 2019-04-22
1.9
None Local Medium Not required Partial None None
The llc_ui_getname function in net/llc/af_llc.c in the Linux kernel before 3.6 has an incorrect return value in certain circumstances, which allows local users to obtain sensitive information from kernel stack memory via a crafted application that leverages an uninitialized pointer argument.
47 CVE-2012-6541 200 +Info 2013-03-15 2013-03-18
1.9
None Local Medium Not required Partial None None
The ccid3_hc_tx_getsockopt function in net/dccp/ccids/ccid3.c in the Linux kernel before 3.6 does not initialize a certain structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.
48 CVE-2012-6540 200 +Info 2013-03-15 2013-05-15
1.9
None Local Medium Not required Partial None None
The do_ip_vs_get_ctl function in net/netfilter/ipvs/ip_vs_ctl.c in the Linux kernel before 3.6 does not initialize a certain structure for IP_VS_SO_GET_TIMEOUT commands, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.
49 CVE-2012-6539 200 +Info 2013-03-15 2013-05-15
1.9
None Local Medium Not required Partial None None
The dev_ifconf function in net/socket.c in the Linux kernel before 3.6 does not initialize a certain structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.
50 CVE-2012-6538 200 +Info 2013-03-15 2019-04-22
1.9
None Local Medium Not required Partial None None
The copy_to_user_auth function in net/xfrm/xfrm_user.c in the Linux kernel before 3.6 uses an incorrect C library function for copying a string, which allows local users to obtain sensitive information from kernel heap memory by leveraging the CAP_NET_ADMIN capability.
Total number of vulnerabilities : 101   Page : 1 (This Page)2 3
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