In the Linux kernel, the following vulnerability has been resolved:
ipv6: sr: fix missing sk_buff release in seg6_input_core
The seg6_input() function is responsible for adding the SRH into a
packet, delegating the operation to the seg6_input_core(). This function
uses the skb_cow_head() to ensure that there is sufficient headroom in
the sk_buff for accommodating the link-layer header.
In the event that the skb_cow_header() function fails, the
seg6_input_core() catches the error but it does not release the sk_buff,
which will result in a memory leak.
This issue was introduced in commit af3b5158b89d ("ipv6: sr: fix BUG due
to headroom too small after SRH push") and persists even after commit
7a3f5b0de364 ("netfilter: add netfilter hooks to SRv6 data plane"),
where the entire seg6_input() code was refactored to deal with netfilter
hooks.
The proposed patch addresses the identified memory leak by requiring the
seg6_input_core() function to release the sk_buff in the event that
skb_cow_head() fails.
References
Configurations
Configuration 1 (hide)
|
History
24 Mar 2025, 17:23
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| First Time |
Linux
Linux linux Kernel |
|
| References | () https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9 - Patch | |
| References | () https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864 - Patch | |
| References | () https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a - Patch | |
| References | () https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8 - Patch | |
| References | () https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940 - Patch |
25 Nov 2024, 20:15
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.2 |
| CWE | CWE-401 |
21 Nov 2024, 09:27
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (es) En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: ipv6: sr: corrige la versión faltante de sk_buff en seg6_input_core La función seg6_input() es responsable de agregar el SRH a un paquete, delegando la operación al seg6_input_core(). Esta función utiliza skb_cow_head() para garantizar que haya suficiente espacio libre en sk_buff para acomodar el encabezado de la capa de enlace. En caso de que la función skb_cow_header() falle, seg6_input_core() detecta el error pero no libera sk_buff, lo que provocará una pérdida de memoria. Este problema se introdujo en el commit af3b5158b89d ("ipv6: sr: corrige el ERROR debido a un espacio libre demasiado pequeño después de la inserción de SRH") y persiste incluso después de el commit 7a3f5b0de364 ("netfilter: agregue enlaces de netfilter al plano de datos SRv6"), donde todo el seg6_input( ) el código fue refactorizado para lidiar con los ganchos de netfilter. El parche propuesto aborda la pérdida de memoria identificada al requerir que la función seg6_input_core() libere sk_buff en caso de que skb_cow_head() falle. | |
| References | () https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9 - | |
| References | () https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864 - | |
| References | () https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a - | |
| References | () https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8 - | |
| References | () https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940 - |
11 Jul 2024, 13:05
| Type | Values Removed | Values Added |
|---|---|---|
| Summary |
|
10 Jul 2024, 08:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-07-10 08:15
Updated : 2025-03-24 17:23
NVD link : CVE-2024-39490
Mitre link : CVE-2024-39490
CVE.ORG link : CVE-2024-39490
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-401
Missing Release of Memory after Effective Lifetime