Vulnerability Name:

CCN-242360

Published:2021-09-14
Updated:2021-09-14
Summary:Linux Kernel is vulnerable to a denial of service, caused by a use-after-free flaw in the ieee80211_crypto_ccmp_decrypt function in in CCMP/GCMP RX. By sending a specially-crafted request, a local attacker could exploit this vulnerability to cause a denial of service condition.
CVSS v3 Severity:6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Consequences:Denial of Service
References:Source: CCN
Type: Kernel.org Bugzilla - Bug 214401
ieee80211_crypto_ccmp_decrypt() activates KFENCE use-after-free

Source: XF
Type: UNKNOWN
linux-kernel-mac80211-dos(242360)

Source: CCN
Type: Linux Kernel GIT Repository
mac80211: fix use-after-free in CCMP/GCMP RX

Source: CCN
Type: Mend Vulnerability Database
WS-2021-0467

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:5.13:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    linux linux kernel 5.13 -