In the Linux kernel, the following vulnerability has been resolved: init/main.c: Fix potential static_command_line memory overflow We allocate memory of size 'xlen + strlen(boot_command_line) + 1' for static_command_line, but the strings copied into static_command_line are extra_command_line and command_line, rather than extra_command_line and boot_command_line. When strlen(command_line) > strlen(boot_command_line), static_command_line will overflow. This patch just recovers strlen(command_line) which was miss-consolidated with strlen(boot_command_line) in the commit f5c7310ac73e ("init/main: add checks for the return value of memblock_alloc*()")
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: init/main.c: soluciona un posible desbordamiento de memoria de static_command_line Asignamos memoria de tamaño 'xlen + strlen(boot_command_line) + 1' para static_command_line, pero las cadenas copiadas en static_command_line son extra_command_line y command_line, en lugar de extra_command_line y boot_command_line. Cuando strlen(command_line) > strlen(boot_command_line), static_command_line se desbordará. Este parche simplemente recupera strlen(command_line) que no se consolidó con strlen(boot_command_line) en el commit f5c7310ac73e ("init/main: agregue comprobaciones para el valor de retorno de memblock_alloc*()")
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | LOCAL |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | LOW |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | HIGH |
| Integrity Impact | HIGH |
| Availability Impact | HIGH |
| Source | Type | Description |
|---|---|---|
| [email protected] | Primary |
en
CWE-787
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd3105cb1c0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd2a1651300> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd36b80a580> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd360617a40> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd2a1b7af80> | Operating System |
| linux | linux_kernel | 6.9 | <built-in method update of dict object at 0x7fd2a1b7acc0> | Operating System |
| linux | linux_kernel | 6.9 | <built-in method update of dict object at 0x7fd31b2daec0> | Operating System |
| linux | linux_kernel | 6.9 | <built-in method update of dict object at 0x7fd3686611c0> | Operating System |
| linux | linux_kernel | 6.9 | <built-in method update of dict object at 0x7fd2a1b79740> | Operating System |
| debian | debian_linux | 10.0 | <built-in method update of dict object at 0x7fd3105cbe40> | Operating System |
| fedoraproject | fedora | 38 | <built-in method update of dict object at 0x7fd3401fee00> | Operating System |
| fedoraproject | fedora | 39 | <built-in method update of dict object at 0x7fd368d34440> | Operating System |
| fedoraproject | fedora | 40 | <built-in method update of dict object at 0x7fd340176d80> | Operating System |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:* |