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K
osvGoogleOSV:ALSA-2021:4356
HistoryNov 09, 2021 - 9:08 a.m.

Moderate: kernel security, bug fix, and enhancement update

2021-11-0909:08:02
Google
osv.dev
4

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.1 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.004 Low

EPSS

Percentile

73.0%

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

  • kernel: out-of-bounds reads in pinctrl subsystem (CVE-2020-0427)
  • kernel: Improper input validation in some Intel® Ethernet E810 Adapter drivers (CVE-2020-24502)
  • kernel: Insufficient access control in some Intel® Ethernet E810 Adapter drivers (CVE-2020-24503)
  • kernel: Uncontrolled resource consumption in some Intel® Ethernet E810 Adapter drivers (CVE-2020-24504)
  • kernel: Fragmentation cache not cleared on reconnection (CVE-2020-24586)
  • kernel: Reassembling fragments encrypted under different keys (CVE-2020-24587)
  • kernel: wifi frame payload being parsed incorrectly as an L2 frame (CVE-2020-24588)
  • kernel: Forwarding EAPOL from unauthenticated wifi client (CVE-2020-26139)
  • kernel: accepting plaintext data frames in protected networks (CVE-2020-26140)
  • kernel: not verifying TKIP MIC of fragmented frames (CVE-2020-26141)
  • kernel: accepting fragmented plaintext frames in protected networks (CVE-2020-26143)
  • kernel: accepting unencrypted A-MSDU frames that start with RFC1042 header (CVE-2020-26144)
  • kernel: accepting plaintext broadcast fragments as full frames (CVE-2020-26145)
  • kernel: powerpc: RTAS calls can be used to compromise kernel integrity (CVE-2020-27777)
  • kernel: locking inconsistency in tty_io.c and tty_jobctrl.c can lead to a read-after-free (CVE-2020-29660)
  • kernel: buffer overflow in mwifiex_cmd_802_11_ad_hoc_start function via a long SSID value (CVE-2020-36158)
  • kernel: slab out-of-bounds read in hci_extended_inquiry_result_evt() (CVE-2020-36386)
  • kernel: Improper access control in BlueZ may allow information disclosure vulnerability. (CVE-2021-0129)
  • kernel: Use-after-free in ndb_queue_rq() in drivers/block/nbd.c (CVE-2021-3348)
  • kernel: Linux kernel eBPF RINGBUF map oversized allocation (CVE-2021-3489)
  • kernel: double free in bluetooth subsystem when the HCI device initialization fails (CVE-2021-3564)
  • kernel: use-after-free in function hci_sock_bound_ioctl() (CVE-2021-3573)
  • kernel: eBPF 32-bit source register truncation on div/mod (CVE-2021-3600)
  • kernel: DoS in rb_per_cpu_empty() (CVE-2021-3679)
  • kernel: Mounting overlayfs inside an unprivileged user namespace can reveal files (CVE-2021-3732)
  • kernel: heap overflow in __cgroup_bpf_run_filter_getsockopt() (CVE-2021-20194)
  • kernel: Race condition in sctp_destroy_sock list_del (CVE-2021-23133)
  • kernel: fuse: stall on CPU can occur because a retry loop continually finds the same bad inode (CVE-2021-28950)
  • kernel: System crash in intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c (CVE-2021-28971)
  • kernel: protection can be bypassed to leak content of kernel memory (CVE-2021-29155)
  • kernel: improper input validation in tipc_nl_retrieve_key function in net/tipc/node.c (CVE-2021-29646)
  • kernel: lack a full memory barrier may lead to DoS (CVE-2021-29650)
  • kernel: local escalation of privileges in handling of eBPF programs (CVE-2021-31440)
  • kernel: protection of stack pointer against speculative pointer arithmetic can be bypassed to leak content of kernel memory (CVE-2021-31829)
  • kernel: out-of-bounds reads and writes due to enforcing incorrect limits for pointer arithmetic operations by BPF verifier (CVE-2021-33200)
  • kernel: reassembling encrypted fragments with non-consecutive packet numbers (CVE-2020-26146)
  • kernel: reassembling mixed encrypted/plaintext fragments (CVE-2020-26147)
  • kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check (CVE-2020-29368)
  • kernel: flowtable list del corruption with kernel BUG at lib/list_debug.c:50 (CVE-2021-3635)
  • kernel: NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c (CVE-2021-3659)
  • kernel: setsockopt System Call Untrusted Pointer Dereference Information Disclosure (CVE-2021-20239)
  • kernel: out of bounds array access in drivers/md/dm-ioctl.c (CVE-2021-31916)

References

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.1 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.004 Low

EPSS

Percentile

73.0%