// For flags

CVE-2024-35936

btrfs: handle chunk tree lookup error in btrfs_relocate_sys_chunks()

Severity Score

"-"
*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

In the Linux kernel, the following vulnerability has been resolved:

btrfs: handle chunk tree lookup error in btrfs_relocate_sys_chunks()

The unhandled case in btrfs_relocate_sys_chunks() loop is a corruption,
as it could be caused only by two impossible conditions:

- at first the search key is set up to look for a chunk tree item, with
offset -1, this is an inexact search and the key->offset will contain
the correct offset upon a successful search, a valid chunk tree item
cannot have an offset -1

- after first successful search, the found_key corresponds to a chunk
item, the offset is decremented by 1 before the next loop, it's
impossible to find a chunk item there due to alignment and size
constraints

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: maneja el error de búsqueda del árbol de fragmentos en btrfs_relocate_sys_chunks() El caso no controlado en el bucle btrfs_relocate_sys_chunks() es una corrupción, ya que solo podría ser causado por dos condiciones imposibles: - al principio el La clave de búsqueda está configurada para buscar un elemento del árbol de fragmentos, con desplazamiento -1, esta es una búsqueda inexacta y la clave->desplazamiento contendrá el desplazamiento correcto tras una búsqueda exitosa, un elemento de árbol de fragmentos válido no puede tener un desplazamiento -1 - después de la primera búsqueda exitosa, found_key corresponde a un elemento fragmentado, el desplazamiento se reduce en 1 antes del siguiente ciclo, es imposible encontrar un elemento fragmentado allí debido a restricciones de alineación y tamaño

*Credits: N/A
CVSS Scores
Attack Vector
-
Attack Complexity
-
Privileges Required
-
User Interaction
-
Scope
-
Confidentiality
-
Integrity
-
Availability
-
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
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
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"
 < 4.19.312
Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.312"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 < 5.4.274
Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.274"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 < 5.10.215
Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.215"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 < 5.15.155
Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.155"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 < 6.1.86
Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.86"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 < 6.6.27
Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.27"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 < 6.8.6
Search vendor "Linux" for product "Linux Kernel" and version " < 6.8.6"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 < 6.9
Search vendor "Linux" for product "Linux Kernel" and version " < 6.9"
en
Affected