CVE-2021-47006
ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook
The commit 1879445dfa7b ("perf/core: Set event's default
::overflow_handler()") set a default event->overflow_handler in
perf_event_alloc(), and replace the check event->overflow_handler with
is_default_overflow_handler(), but one is missing.
Currently, the bp->overflow_handler can not be NULL. As a result,
enable_single_step() is always not invoked.
Comments from Zhen Lei:
https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ARM: 9064/1: hw_breakpoint: no comprobar directamente el gancho overflow_handler del evento. el commit 1879445dfa7b ("perf/core: establecer el valor predeterminado del evento ::overflow_handler()") establece un valor predeterminado event->overflow_handler en perf_event_alloc(), y reemplace check event->overflow_handler con is_default_overflow_handler(), pero falta uno. Actualmente, bp->overflow_handler no puede ser NULL. Como resultado, enable_single_step() no siempre se invoca. Comentarios de Zhen Lei: https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-27 CVE Reserved
- 2024-02-28 CVE Published
- 2024-02-29 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (9)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/1879445dfa7bbd6fe21b09c5cc72f4934798afed | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.7 < 4.9.269 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.7 < 4.9.269" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.7 < 4.14.233 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.7 < 4.14.233" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.7 < 4.19.191 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.7 < 4.19.191" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.7 < 5.4.120 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.7 < 5.4.120" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.7 < 5.10.38 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.7 < 5.10.38" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.7 < 5.11.22 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.7 < 5.11.22" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.7 < 5.12.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.7 < 5.12.5" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.7 < 5.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.7 < 5.13" | en |
Affected
| ||||||