// For flags

CVE-2021-47301

igb: Fix use-after-free error during reset

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:

igb: Fix use-after-free error during reset

Cleans the next descriptor to watch (next_to_watch) when cleaning the
TX ring.

Failure to do so can cause invalid memory accesses. If igb_poll() runs
while the controller is reset this can lead to the driver try to free
a skb that was already freed.

(The crash is harder to reproduce with the igb driver, but the same
potential problem exists as the code is identical to igc)

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: igb: corrige el error de use after free durante el reinicio. Limpia el siguiente descriptor a observar (next_to_watch) al limpiar el anillo TX. De lo contrario, se pueden producir accesos a la memoria no válidos. Si igb_poll() se ejecuta mientras se reinicia el controlador, esto puede hacer que el controlador intente liberar un skb que ya estaba liberado. (El fallo es más difícil de reproducir con el controlador igb, pero existe el mismo problema potencial ya que el código es idéntico al de igc)

*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
  • 2024-05-21 CVE Reserved
  • 2024-05-21 CVE Published
  • 2024-05-22 EPSS Updated
  • 2024-12-19 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"
>= 4.12 < 4.14.241
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 4.14.241"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 4.12 < 4.19.199
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 4.19.199"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 4.12 < 5.4.136
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 5.4.136"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 4.12 < 5.10.54
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 5.10.54"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 4.12 < 5.13.6
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 5.13.6"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 4.12 < 5.14
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 5.14"
en
Affected