National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

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Search Parameters:
  • Contains Software Flaws (CVE)
  • CPE Product Version: cpe:/o:linux:linux_kernel:2.6.21:rc5
There are 2,402 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2012-0810

The int3 handler in the Linux kernel before 3.3 relies on a per-CPU debug stack, which allows local users to cause a denial of service (stack corruption and panic) via a crafted application that triggers certain lock contention.

Published: February 12, 2020; 09:15:10 AM -05:00
V3.1: 5.5 MEDIUM
    V2: 4.9 MEDIUM
CVE-2009-4067

Buffer overflow in the auerswald_probe function in the Auerswald Linux USB driver for the Linux kernel before 2.6.27 allows physically proximate attackers to execute arbitrary code, cause a denial of service via a crafted USB device, or take full control of the system.

Published: February 11, 2020; 02:15:10 PM -05:00
V3.1: 6.8 MEDIUM
    V2: 7.2 HIGH
CVE-2020-8649

There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vgacon_invert_region function in drivers/video/console/vgacon.c.

Published: February 05, 2020; 08:15:10 PM -05:00
V3.1: 7.1 HIGH
    V2: 3.6 LOW
CVE-2020-8648

There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the n_tty_receive_buf_common function in drivers/tty/n_tty.c.

Published: February 05, 2020; 08:15:10 PM -05:00
V3.1: 7.1 HIGH
    V2: 3.6 LOW
CVE-2020-8647

There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vc_do_resize function in drivers/tty/vt/vt.c.

Published: February 05, 2020; 08:15:10 PM -05:00
V3.1: 7.1 HIGH
    V2: 3.6 LOW
CVE-2019-20422

In the Linux kernel before 5.3.4, fib6_rule_lookup in net/ipv6/ip6_fib.c mishandles the RT6_LOOKUP_F_DST_NOREF flag in a reference-count decision, leading to (for example) a crash that was identified by syzkaller, aka CID-7b09c2d052db.

Published: January 27, 2020; 12:15:10 AM -05:00
V3.1: 5.5 MEDIUM
    V2: 2.1 LOW
CVE-2019-20096

In the Linux kernel before 5.1, there is a memory leak in __feat_register_sp() in net/dccp/feat.c, which may cause denial of service, aka CID-1d3ff0950e2b.

Published: December 30, 2019; 12:15:11 AM -05:00
V3.1: 5.5 MEDIUM
    V2: 4.9 MEDIUM
CVE-2019-20095

mwifiex_tm_cmd in drivers/net/wireless/marvell/mwifiex/cfg80211.c in the Linux kernel before 5.1.6 has some error-handling cases that did not free allocated hostcmd memory, aka CID-003b686ace82. This will cause a memory leak and denial of service.

Published: December 30, 2019; 12:15:11 AM -05:00
V3.1: 5.5 MEDIUM
    V2: 4.9 MEDIUM
CVE-2019-20054

In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.

Published: December 28, 2019; 12:15:11 AM -05:00
V3.1: 5.5 MEDIUM
    V2: 4.9 MEDIUM
CVE-2019-19966

In the Linux kernel before 5.1.6, there is a use-after-free in cpia2_exit() in drivers/media/usb/cpia2/cpia2_v4l.c that will cause denial of service, aka CID-dea37a972655.

Published: December 24, 2019; 11:15:12 PM -05:00
V3.1: 4.3 MEDIUM
    V2: 2.1 LOW
CVE-2019-19965

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.

Published: December 24, 2019; 11:15:12 PM -05:00
V3.1: 4.7 MEDIUM
    V2: 1.9 LOW
CVE-2019-19947

In the Linux kernel through 5.4.6, there are information leaks of uninitialized memory to a USB device in the drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c driver, aka CID-da2311a6385c.

Published: December 23, 2019; 07:15:10 PM -05:00
V3.1: 4.6 MEDIUM
    V2: 2.1 LOW
CVE-2019-5108

An exploitable denial-of-service vulnerability exists in the Linux kernel prior to mainline 5.3. An attacker could exploit this vulnerability by triggering AP to send IAPP location updates for stations before the required authentication process has completed. This could lead to different denial-of-service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby APs of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.

Published: December 23, 2019; 02:15:11 PM -05:00
V3.1: 6.5 MEDIUM
    V2: 3.3 LOW
CVE-2019-19922

kernel/sched/fair.c in the Linux kernel before 5.3.9, when cpu.cfs_quota_us is used (e.g., with Kubernetes), allows attackers to cause a denial of service against non-cpu-bound applications by generating a workload that triggers unwanted slice expiration, aka CID-de53fd7aedb1. (In other words, although this slice expiration would typically be seen with benign workloads, it is possible that an attacker could calculate how many stray requests are required to force an entire Kubernetes cluster into a low-performance state caused by slice expiration, and ensure that a DDoS attack sent that number of stray requests. An attack does not affect the stability of the kernel; it only causes mismanagement of application execution.)

Published: December 22, 2019; 03:15:10 PM -05:00
V3.1: 5.5 MEDIUM
    V2: 2.1 LOW
CVE-2019-19241

In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an unprivileged user, are sometimes performed by a kernel worker thread without considering that context.

Published: December 17, 2019; 03:15:11 PM -05:00
V3.1: 7.8 HIGH
    V2: 4.6 MEDIUM
CVE-2019-19807

In the Linux kernel before 5.3.11, sound/core/timer.c has a use-after-free caused by erroneous code refactoring, aka CID-e7af6307a8a5. This is related to snd_timer_open and snd_timer_close_locked. The timeri variable was originally intended to be for a newly created timer instance, but was used for a different purpose after refactoring.

Published: December 15, 2019; 06:15:11 PM -05:00
V3.1: 7.8 HIGH
    V2: 7.2 HIGH
CVE-2019-19770

In the Linux kernel 4.19.83, there is a use-after-free (read) in the debugfs_remove function in fs/debugfs/inode.c (which is used to remove a file or directory in debugfs that was previously created with a call to another debugfs function such as debugfs_create_file).

Published: December 12, 2019; 03:15:17 PM -05:00
V3.1: 7.5 HIGH
    V2: 5.0 MEDIUM
CVE-2019-19769

In the Linux kernel 5.3.10, there is a use-after-free (read) in the perf_trace_lock_acquire function (related to include/trace/events/lock.h).

Published: December 12, 2019; 03:15:17 PM -05:00
V3.1: 7.5 HIGH
    V2: 5.0 MEDIUM
CVE-2019-19767

The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka CID-4ea99936a163.

Published: December 12, 2019; 03:15:17 PM -05:00
V3.1: 5.5 MEDIUM
    V2: 4.3 MEDIUM
CVE-2019-19602

fpregs_state_valid in arch/x86/include/asm/fpu/internal.h in the Linux kernel before 5.4.2, when GCC 9 is used, allows context-dependent attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact because of incorrect fpu_fpregs_owner_ctx caching, as demonstrated by mishandling of signal-based non-cooperative preemption in Go 1.14 prereleases on amd64, aka CID-59c4bd853abc.

Published: December 05, 2019; 09:15:09 AM -05:00
V3.1: 7.8 HIGH
    V2: 6.9 MEDIUM