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Search Results (Refine Search)

Search Parameters:
  • Keyword (text search): cpe:2.3:o:linux:linux_kernel:4.16:rc3:*:*:*:*:*:*
  • CPE Name Search: true
There are 2,082 matching records.
Displaying matches 1,201 through 1,220.
Vuln ID Summary CVSS Severity
CVE-2021-26931

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.

Published: February 16, 2021; 9:15:12 PM -0500
V4.0:(not available)
V3.1: 5.5 MEDIUM
V2.0: 1.9 LOW
CVE-2021-26930

An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later processing, resulting in the caller assuming successful mapping, and hence subsequent operations trying to access space that wasn't mapped. In another case, internal state would be insufficiently updated, preventing safe recovery from the error. This affects drivers/block/xen-blkback/blkback.c.

Published: February 16, 2021; 8:15:13 PM -0500
V4.0:(not available)
V3.1: 7.8 HIGH
V2.0: 4.6 MEDIUM
CVE-2020-16120

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.

Published: February 10, 2021; 3:15:15 PM -0500
V4.0:(not available)
V3.1: 4.4 MEDIUM
V2.0: 2.1 LOW
CVE-2021-3348

nbd_add_socket in drivers/block/nbd.c in the Linux kernel through 5.10.12 has an ndb_queue_rq use-after-free that could be triggered by local attackers (with access to the nbd device) via an I/O request at a certain point during device setup, aka CID-b98e762e3d71.

Published: January 31, 2021; 11:15:14 PM -0500
V4.0:(not available)
V3.1: 7.0 HIGH
V2.0: 4.4 MEDIUM
CVE-2021-3347

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.

Published: January 29, 2021; 12:15:12 PM -0500
V4.0:(not available)
V3.1: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2021-3178

fs/nfsd/nfs3xdr.c in the Linux kernel through 5.10.8, when there is an NFS export of a subdirectory of a filesystem, allows remote attackers to traverse to other parts of the filesystem via READDIRPLUS. NOTE: some parties argue that such a subdirectory export is not intended to prevent this attack; see also the exports(5) no_subtree_check default behavior

Published: January 19, 2021; 2:15:13 AM -0500
V4.0:(not available)
V3.1: 6.5 MEDIUM
V2.0: 5.5 MEDIUM
CVE-2020-28374

In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore.

Published: January 12, 2021; 11:15:12 PM -0500
V4.0:(not available)
V3.1: 8.1 HIGH
V2.0: 5.5 MEDIUM
CVE-2020-36158

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.

Published: January 05, 2021; 12:15:10 AM -0500
V4.0:(not available)
V3.1: 6.7 MEDIUM
V2.0: 7.2 HIGH
CVE-2020-29569

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.

Published: December 15, 2020; 12:15:14 PM -0500
V4.0:(not available)
V3.1: 8.8 HIGH
V2.0: 7.2 HIGH
CVE-2020-27777

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.

Published: December 15, 2020; 12:15:14 PM -0500
V4.0:(not available)
V3.1: 6.7 MEDIUM
V2.0: 7.2 HIGH
CVE-2020-27786

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.

Published: December 11, 2020; 12:15:12 AM -0500
V4.0:(not available)
V3.1: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2020-29661

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.

Published: December 09, 2020; 12:15:31 PM -0500
V4.0:(not available)
V3.1: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2020-29660

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.

Published: December 09, 2020; 12:15:31 PM -0500
V4.0:(not available)
V3.1: 4.4 MEDIUM
V2.0: 2.1 LOW
CVE-2020-14381

A flaw was found in the Linux kernel’s futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creating a futex on a filesystem that is about to be unmounted. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Published: December 03, 2020; 12:15:12 PM -0500
V4.0:(not available)
V3.1: 7.8 HIGH
V2.0: 4.6 MEDIUM
CVE-2020-14351

A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem allowing a local attacker with permission to monitor perf events to corrupt memory and possibly escalate privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Published: December 03, 2020; 12:15:12 PM -0500
V4.0:(not available)
V3.1: 7.8 HIGH
V2.0: 4.6 MEDIUM
CVE-2020-25704

A flaw memory leak in the Linux kernel performance monitoring subsystem was found in the way if using PERF_EVENT_IOC_SET_FILTER. A local user could use this flaw to starve the resources causing denial of service.

Published: December 01, 2020; 8:15:12 PM -0500
V4.0:(not available)
V3.1: 5.5 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2020-25656

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.

Published: December 01, 2020; 8:15:12 PM -0500
V4.0:(not available)
V3.1: 4.1 MEDIUM
V2.0: 1.9 LOW
CVE-2020-29374

An issue was discovered in the Linux kernel before 5.7.3, related to mm/gup.c and mm/huge_memory.c. The get_user_pages (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended write access, aka CID-17839856fd58.

Published: November 28, 2020; 2:15:11 AM -0500
V4.0:(not available)
V3.1: 3.6 LOW
V2.0: 3.3 LOW
CVE-2020-29373

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.

Published: November 28, 2020; 2:15:11 AM -0500
V4.0:(not available)
V3.1: 6.5 MEDIUM
V2.0: 2.1 LOW
CVE-2020-29372

An issue was discovered in do_madvise in mm/madvise.c in the Linux kernel before 5.6.8. There is a race condition between coredump operations and the IORING_OP_MADVISE implementation, aka CID-bc0c4d1e176e.

Published: November 28, 2020; 2:15:11 AM -0500
V4.0:(not available)
V3.1: 4.7 MEDIUM
V2.0: 4.7 MEDIUM