9.8
CRITICAL
CVSS 3.1
CVE-2026-74473
vxlan: use pskb_network_may_pull() in route_shortcircuit()
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: vxlan: use pskb_network_may_pull() in route_shortcircuit() route_shortcircuit() currently calls pskb_may_pull(skb, sizeof(struct iphdr)) (or ipv6hdr), which checks if bytes are available starting from skb->data. However, in vxlan_xmit(), skb->data points to the MAC header, so skb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, 20) only checks 20 bytes from skb->data (which is 14 bytes MAC header + 6 bytes of IP header), leaving the rest of the IP header potentially un-pulled in non-linear frags. Subsequent dereferences of ip_hdr(skb)->daddr can read beyond the pulled linear buffer length. Fix this by using pskb_network_may_pull(), which adds skb_network_offset(skb) to the length check to ensure the full network header is present in the linear buffer.
Details
INFO
Published Date :
Aug. 15, 2026, 1:17 p.m.
Last Modified :
Aug. 19, 2026, 5:21 p.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
Update the Linux kernel to fix a memory corruption vulnerability in the vxlan module.
- Update the Linux kernel to the latest version.
- Apply the specific patch for the vxlan module.
- Ensure network headers are properly handled.
- Verify network header integrity after updates.
References
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-2026-74473.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74473 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-2026-74473
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-2026-74473 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74473 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. 19, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/214ba43faf106cb06cd3dd30999c5c809c868b53 Added Reference https://git.kernel.org/stable/c/6bd0a3a1b5744166946f0c551a6665c3b46b05e4 Added Reference https://git.kernel.org/stable/c/c419af4924c1593500a40519730ed98575d04a3e Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '42887be7c4cf283cce02cd0fb6411221167c8b6c', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': 'aa0d31376d574ac858a40078431a77127bf04ee4', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': 'ee799977d7941dbfb11049e17edd9eaf4f8820f7', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '4f3f96e771a20263635bb5e1307c112d613b4bbd', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb', 'versionType': 'git'}], 'programFiles': ['drivers/net/vxlan/vxlan_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/vxlan/vxlan_core.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': 'c419af4924c1593500a40519730ed98575d04a3e', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '6bd0a3a1b5744166946f0c551a6665c3b46b05e4', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '214ba43faf106cb06cd3dd30999c5c809c868b53', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '42887be7c4cf283cce02cd0fb6411221167c8b6c', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': 'aa0d31376d574ac858a40078431a77127bf04ee4', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': 'ee799977d7941dbfb11049e17edd9eaf4f8820f7', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '4f3f96e771a20263635bb5e1307c112d613b4bbd', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb', 'versionType': 'git'}], 'programFiles': ['drivers/net/vxlan/vxlan_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.265', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.216', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.183', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/vxlan/vxlan_core.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/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': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '42887be7c4cf283cce02cd0fb6411221167c8b6c', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': 'aa0d31376d574ac858a40078431a77127bf04ee4', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': 'ee799977d7941dbfb11049e17edd9eaf4f8820f7', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '4f3f96e771a20263635bb5e1307c112d613b4bbd', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb', 'versionType': 'git'}], 'programFiles': ['drivers/net/vxlan/vxlan_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/vxlan/vxlan_core.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '42887be7c4cf283cce02cd0fb6411221167c8b6c', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': 'aa0d31376d574ac858a40078431a77127bf04ee4', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': 'ee799977d7941dbfb11049e17edd9eaf4f8820f7', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '4f3f96e771a20263635bb5e1307c112d613b4bbd', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb', 'versionType': 'git'}], 'programFiles': ['drivers/net/vxlan/vxlan_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/vxlan/vxlan_core.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': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '42887be7c4cf283cce02cd0fb6411221167c8b6c', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': 'aa0d31376d574ac858a40078431a77127bf04ee4', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': 'ee799977d7941dbfb11049e17edd9eaf4f8820f7', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '4f3f96e771a20263635bb5e1307c112d613b4bbd', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f67addf158f98f8197e08974966b18480dc751', 'lessThan': '26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb', 'versionType': 'git'}], 'programFiles': ['drivers/net/vxlan/vxlan_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/vxlan/vxlan_core.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: vxlan: use pskb_network_may_pull() in route_shortcircuit() route_shortcircuit() currently calls pskb_may_pull(skb, sizeof(struct iphdr)) (or ipv6hdr), which checks if bytes are available starting from skb->data. However, in vxlan_xmit(), skb->data points to the MAC header, so skb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, 20) only checks 20 bytes from skb->data (which is 14 bytes MAC header + 6 bytes of IP header), leaving the rest of the IP header potentially un-pulled in non-linear frags. Subsequent dereferences of ip_hdr(skb)->daddr can read beyond the pulled linear buffer length. Fix this by using pskb_network_may_pull(), which adds skb_network_offset(skb) to the length check to ensure the full network header is present in the linear buffer. Added Reference https://git.kernel.org/stable/c/26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb Added Reference https://git.kernel.org/stable/c/42887be7c4cf283cce02cd0fb6411221167c8b6c Added Reference https://git.kernel.org/stable/c/4f3f96e771a20263635bb5e1307c112d613b4bbd Added Reference https://git.kernel.org/stable/c/aa0d31376d574ac858a40078431a77127bf04ee4 Added Reference https://git.kernel.org/stable/c/ee799977d7941dbfb11049e17edd9eaf4f8820f7
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.