CVE-2024-35905
bpf: Protect against int overflow for stack access size
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
bpf: Protect against int overflow for stack access size
This patch re-introduces protection against the size of access to stack
memory being negative; the access size can appear negative as a result
of overflowing its signed int representation. This should not actually
happen, as there are other protections along the way, but we should
protect against it anyway. One code path was missing such protections
(fixed in the previous patch in the series), causing out-of-bounds array
accesses in check_stack_range_initialized(). This patch causes the
verification of a program with such a non-sensical access size to fail.
This check used to exist in a more indirect way, but was inadvertendly
removed in a833a17aeac7.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Protección contra desbordamiento int para el tamaño de acceso a la pila. Este parche reintroduce la protección contra que el tamaño de acceso a la memoria de la pila sea negativo; el tamaño de acceso puede parecer negativo como resultado de desbordar su representación int firmada. En realidad, esto no debería suceder, ya que existen otras protecciones en el camino, pero debemos protegernos contra ello de todos modos. A una ruta de código le faltaban dichas protecciones (corregidas en el parche anterior de la serie), lo que provocaba accesos a matrices fuera de los límites en check_stack_range_initialized(). Este parche hace que falle la verificación de un programa con un tamaño de acceso tan absurdo. Esta verificación solía existir de una manera más indirecta, pero se eliminó inadvertidamente en a833a17aeac7.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-05-17 CVE Reserved
- 2024-05-19 CVE Published
- 2024-05-20 EPSS Updated
- 2024-08-02 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (13)
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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" | >= 5.10.209 < 5.10.215 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10.209 < 5.10.215" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15.148 < 5.15.154 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15.148 < 5.15.154" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.1.75 < 6.1.85 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.1.75 < 6.1.85" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.6.14 < 6.6.26 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.6.14 < 6.6.26" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.8 < 6.8.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.8 < 6.8.5" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.8 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.8 < 6.9" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 6.7.2 Search vendor "Linux" for product "Linux Kernel" and version "6.7.2" | en |
Affected
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