CVE-2026-74260
netfilter: nf_dup_netdev: add nf_dev_xmit_recursion*() helpers and use them
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_dup_netdev: add nf_dev_xmit_recursion*() helpers and use them Update nft_dup and nft_fwd to use the nf_dev_xmit_recursion() helpers. This patch also disables BH when transmitting the skb to address a possible migration to different CPU leading to imbalanced decrementation of the recursion counters. This is modeled after Florian Westphal's dev_xmit_recursion*() API available since commit 97cdcf37b57e ("net: place xmit recursion in softnet data") according to its current state in the tree.
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:19 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to the latest version.
- Ensure BH is disabled during transmission.
- Verify recursion counters are balanced.
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-2026-74260.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/2354e975932dabb06fad239f07a3b68fd1809737 | |
| https://git.kernel.org/stable/c/edf234f71fb327792196f813048ab8f5bd3bb712 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74260 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-2026-74260
weaknesses.
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-2026-74260 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74260 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.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f37ad91270397a6d053e8623bdb3cf79859691d2', 'lessThan': 'edf234f71fb327792196f813048ab8f5bd3bb712', 'versionType': 'git'}, {'status': 'affected', 'version': 'f37ad91270397a6d053e8623bdb3cf79859691d2', 'lessThan': '2354e975932dabb06fad239f07a3b68fd1809737', 'versionType': 'git'}], 'programFiles': ['include/net/netfilter/nf_dup_netdev.h', 'net/netfilter/nf_dup_netdev.c', 'net/netfilter/nft_fwd_netdev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['include/net/netfilter/nf_dup_netdev.h', 'net/netfilter/nf_dup_netdev.c', 'net/netfilter/nft_fwd_netdev.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f37ad91270397a6d053e8623bdb3cf79859691d2', 'lessThan': 'edf234f71fb327792196f813048ab8f5bd3bb712', 'versionType': 'git'}, {'status': 'affected', 'version': 'f37ad91270397a6d053e8623bdb3cf79859691d2', 'lessThan': '2354e975932dabb06fad239f07a3b68fd1809737', 'versionType': 'git'}], 'programFiles': ['include/net/netfilter/nf_dup_netdev.h', 'net/netfilter/nf_dup_netdev.c', 'net/netfilter/nft_fwd_netdev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['include/net/netfilter/nf_dup_netdev.h', 'net/netfilter/nf_dup_netdev.c', 'net/netfilter/nft_fwd_netdev.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f37ad91270397a6d053e8623bdb3cf79859691d2', 'lessThan': 'edf234f71fb327792196f813048ab8f5bd3bb712', 'versionType': 'git'}, {'status': 'affected', 'version': 'f37ad91270397a6d053e8623bdb3cf79859691d2', 'lessThan': '2354e975932dabb06fad239f07a3b68fd1809737', 'versionType': 'git'}], 'programFiles': ['include/net/netfilter/nf_dup_netdev.h', 'net/netfilter/nf_dup_netdev.c', 'net/netfilter/nft_fwd_netdev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['include/net/netfilter/nf_dup_netdev.h', 'net/netfilter/nf_dup_netdev.c', 'net/netfilter/nft_fwd_netdev.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_dup_netdev: add nf_dev_xmit_recursion*() helpers and use them Update nft_dup and nft_fwd to use the nf_dev_xmit_recursion() helpers. This patch also disables BH when transmitting the skb to address a possible migration to different CPU leading to imbalanced decrementation of the recursion counters. This is modeled after Florian Westphal's dev_xmit_recursion*() API available since commit 97cdcf37b57e ("net: place xmit recursion in softnet data") according to its current state in the tree. Added Reference https://git.kernel.org/stable/c/2354e975932dabb06fad239f07a3b68fd1809737 Added Reference https://git.kernel.org/stable/c/edf234f71fb327792196f813048ab8f5bd3bb712