CVE-2021-46916
ixgbe: Fix NULL pointer dereference in ethtool loopback test
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
ixgbe: Fix NULL pointer dereference in ethtool loopback test
The ixgbe driver currently generates a NULL pointer dereference when
performing the ethtool loopback test. This is due to the fact that there
isn't a q_vector associated with the test ring when it is setup as
interrupts are not normally added to the test rings.
To address this I have added code that will check for a q_vector before
returning a napi_id value. If a q_vector is not present it will return a
value of 0.
En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ixgbe: corrige la desreferencia de puntero NULL en la prueba de bucle invertido de ethtool. El controlador ixgbe actualmente genera una desreferencia de puntero NULL cuando se realiza la prueba de bucle invertido de ethtool. Esto se debe al hecho de que no hay un q_vector asociado con el anillo de prueba cuando se configura, ya que normalmente no se agregan interrupciones a los anillos de prueba. Para solucionar esto, agregué un código que verificará si hay un q_vector antes de devolver un valor de napi_id. Si un q_vector no está presente, devolverá un valor de 0.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-25 CVE Reserved
- 2024-02-27 CVE Published
- 2024-02-27 EPSS Updated
- 2024-09-11 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/b02e5a0ebb172c8276cea3151942aac681f7a4a6 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://git.kernel.org/stable/c/758d19098df4b0bbca9f40d6ae6c82c9c18b9bba | 2021-04-21 | |
| https://git.kernel.org/stable/c/31166efb1cee348eb6314e9c0095d84cbeb66b9d | 2021-04-13 |
| 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" | >= 5.11 < 5.11.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.11.16" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.11 < 5.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.12" | en |
Affected
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