CVE-2024-39490
"IPv6 SR Linux Kernel Memory Leak Vulnerability"
Description
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.
INFO
Published Date :
July 10, 2024, 8:15 a.m.
Last Modified :
March 24, 2025, 5:23 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
2.5
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-39490.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-39490 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-39490 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Mar. 24, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.33 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.9.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.93 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.12 up to (excluding) 5.15.161 Added Reference Type CVE: https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940 Types: Patch -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 25, 2024
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-401 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9 Added Reference https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864 Added Reference https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a Added Reference https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8 Added Reference https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 10, 2024
Action Type Old Value New Value Added Description 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. Added Reference kernel.org https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-39490 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-39490
weaknesses.