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ALSA-2021:4356 — Moderate: kernel security, bug fix, and enhancement update

Affected: AlmaLinux:8: kernel-tools-libs-devel

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(R) Ethernet E810 Adapter drivers (CVE-2020-24502) * kernel: Insufficient access control in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24503) * kernel: Uncontrolled resource consumption in some Intel(R) 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 SSI…

bdu:2021-03095

certfr-2021-avi-363 — De multiples vulnérabilités ont été découvertes dans les produits Juniper. Elles permettent à un attaquant de provoquer…

certfr-2021-avi-363

cisco-sa-wifi-faf-22epcEWu — Multiple Vulnerabilities in Frame Aggregation and Fragmentation Implementations of 802.11 Specification Affecting Cisco…

On May 11, 2021, the research paper Fragment and Forge: Breaking Wi-Fi Through Frame Aggregation and Fragmentation was made public. This paper discusses 12 vulnerabilities in the 802.11 standard. One vulnerability is in the frame aggregation functionality, two vulnerabilities are in the frame fragmentation functionality, and the other nine are implementation vulnerabilities. These vulnerabilities could allow an attacker to forge encrypted frames, which could in turn enable the exfiltration of sensitive data from a targeted device. This advisory will be updated as additional information becomes available.

cnvd-2021-34682

EUVD-2026-45194

fkie_cve-2020-24586

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.

GHSA-85mg-8m94-9jrr

gsd-2020-24586

ICSA-21-236-01 — Hitachi ABB Power Grids TropOS

The 802.11 standard that underpins Wi-Fi protected access (WPA, WPA2, and WPA3) and wired equivalent privacy (WEP) does not require 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 vulnerability can be exploited to inject arbitrary network packets and/or exfiltrate user data.CVE-2020-24586 has been assigned to this vulnerability. A CVSS v3 base score of 3.5 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N). The 802.11 standard that underpins Wi-Fi protected access (WPA, WPA2, and WPA3) and wired equivalent privacy (WEP) does not require all fragments of a frame are encrypted under the same key. An adversary could exploit this vulnerability to decrypt selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP encryption key is periodically renewed.CVE-2020-24587 has been assigned to this vulnerability. A CVSS v3 base score of 2.6 has been calculated; the CVSS vector string is (AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N). The 802.11 standard that underpins Wi-Fi protected access (WPA, WPA2, and WPA3) and wired equivalent privacy (WEP) does not require the A-MSDU flag in the plaintext QoS header field be authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an adversary could exploit this vulnerability to inject arbi…

openSUSE-SU-2021:0843-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

RHSA-2021:4140 — Red Hat Security Advisory: kernel-rt security and bug fix update

kernel: Intel graphics card information leak. kernel: out-of-bounds reads in pinctrl subsystem. kernel: Improper input validation in some Intel(R) Ethernet E810 Adapter drivers kernel: Insufficient access control in some Intel(R) Ethernet E810 Adapter drivers kernel: Uncontrolled resource consumption in some Intel(R) Ethernet E810 Adapter drivers kernel: Fragmentation cache not cleared on reconnection kernel: Reassembling fragments encrypted under different keys kernel: wifi frame payload being parsed incorrectly as an L2 frame kernel: Forwarding EAPOL from unauthenticated wifi client kernel: accepting plaintext data frames in protected networks kernel: not verifying TKIP MIC of fragmented frames kernel: accepting fragmented plaintext frames in protected networks kernel: accepting unencrypted A-MSDU frames that start with RFC1042 header kernel: accepting plaintext broadcast fragments as full frames kernel: reassembling encrypted fragments with non-consecutive packet numbers kernel: reassembling mixed encrypted/plaintext fragments kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check kernel: locking inconsistency in drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c can lead to a read-after-free kernel: buffer overflow in mwifiex_cmd_802_11_ad_hoc_start function in drivers/net/wireless/marvell/mwifiex/join.c via a long SSID value kernel: memory leak upon a kmalloc failure in kvm_io_bus_unregister_dev fun…

SUSE-SU-2021:14764-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2020-24586

Affected: Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux, Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:Pro:16.04:LTS: linux-aws-hwe, Ubuntu:Pro:16.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-gcp, Ubuntu:Pro:16.04:LTS: linux-hwe, Ubuntu:Pro:16.04:LTS: linux-oracle, Ubuntu:Pro:16.04:LTS: linux and 75 more

WID-SEC-W-2022-2069 — IEEE 802.11 (WLAN): Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in der IEEE 802.11 Spezifikation und zahlreichen Implementierungen ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Netzwerkverkehr zu manipulieren und um Informationen offenzulegen.