// For flags

CVE-2021-41864

kernel: eBPF multiplication integer overflow in prealloc_elems_and_freelist() in kernel/bpf/stackmap.c leads to out-of-bounds write

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.

prealloc_elems_and_freelist en kernel/bpf/stackmap.c en el kernel de Linux antes de la versión 5.14.12 permite a usuarios sin privilegios desencadenar un desbordamiento de enteros en la multiplicación de eBPF con una escritura fuera de los límites resultante.

An out-of-bounds (OOB) memory write flaw was found in prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the bpf in the Linux kernel. In this flaw, the multiplication to calculate the size could lead to an integer overflow which could allow a local attacker, with a special user privilege, to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-10-01 CVE Reserved
  • 2021-10-01 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-190: Integer Overflow or Wraparound
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Netapp
Search vendor "Netapp"
H410c Firmware
Search vendor "Netapp" for product "H410c Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
H410c
Search vendor "Netapp" for product "H410c"
--
Safe
Netapp
Search vendor "Netapp"
H300s Firmware
Search vendor "Netapp" for product "H300s Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
H300s
Search vendor "Netapp" for product "H300s"
--
Safe
Netapp
Search vendor "Netapp"
H500s Firmware
Search vendor "Netapp" for product "H500s Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
H500s
Search vendor "Netapp" for product "H500s"
--
Safe
Netapp
Search vendor "Netapp"
H700s Firmware
Search vendor "Netapp" for product "H700s Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
H700s
Search vendor "Netapp" for product "H700s"
--
Safe
Netapp
Search vendor "Netapp"
H300e Firmware
Search vendor "Netapp" for product "H300e Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
H300e
Search vendor "Netapp" for product "H300e"
--
Safe
Netapp
Search vendor "Netapp"
H500e Firmware
Search vendor "Netapp" for product "H500e Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
H500e
Search vendor "Netapp" for product "H500e"
--
Safe
Netapp
Search vendor "Netapp"
H700e Firmware
Search vendor "Netapp" for product "H700e Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
H700e
Search vendor "Netapp" for product "H700e"
--
Safe
Netapp
Search vendor "Netapp"
H410s Firmware
Search vendor "Netapp" for product "H410s Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
H410s
Search vendor "Netapp" for product "H410s"
--
Safe
Netapp
Search vendor "Netapp"
Solidfire Baseboard Management Controller Firmware
Search vendor "Netapp" for product "Solidfire Baseboard Management Controller Firmware"
--
Affected
in Netapp
Search vendor "Netapp"
Solidfire Baseboard Management Controller
Search vendor "Netapp" for product "Solidfire Baseboard Management Controller"
--
Safe
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
< 5.14.12
Search vendor "Linux" for product "Linux Kernel" and version " < 5.14.12"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
33
Search vendor "Fedoraproject" for product "Fedora" and version "33"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
34
Search vendor "Fedoraproject" for product "Fedora" and version "34"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
35
Search vendor "Fedoraproject" for product "Fedora" and version "35"
-
Affected
Netapp
Search vendor "Netapp"
Cloud Backup
Search vendor "Netapp" for product "Cloud Backup"
--
Affected
Netapp
Search vendor "Netapp"
Hci Management Node
Search vendor "Netapp" for product "Hci Management Node"
--
Affected
Netapp
Search vendor "Netapp"
Solidfire
Search vendor "Netapp" for product "Solidfire"
--
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected