Vulnerability Name:

CCN-243018

Published:2021-12-19
Updated:2021-12-19
Summary:Linux Kernel is vulnerable to a denial of service, caused by a use-after-free flaw due to delegation race in nfsd. By sending a specially-crafted request, a local attacker could exploit this vulnerability to cause a denial of service condition.
CVSS v3 Severity:5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Consequences:Denial of Service
References:Source: XF
Type: UNKNOWN
linux-kernel-nfsd-dos(243018)

Source: CCN
Type: Linux Kernel GIT Repository
nfsd: fix use-after-free due to delegation race

Source: CCN
Type: Mend Vulnerability Database
WS-2021-0551

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/a:linux:linux_kernel:5.15:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    linux linux kernel 5.15 -