CVE-2026-74616
xdp: reject clones that overrun skb_shared_info tailroom
Description
In the Linux kernel, the following vulnerability has been resolved: xdp: reject clones that overrun skb_shared_info tailroom xdpf_clone() clones broadcast copies into a single page and sets frame_sz to PAGE_SIZE. __xdp_build_skb_from_frame() later treats that page like a normal XDP frame and expects the usual skb_shared_info tailroom at the end of the buffer. The current check only rejects frames whose linear xdp_frame header, headroom, and packet data exceed PAGE_SIZE. A source frame backed by a larger allocation can still satisfy that check while extending into the clone's required shared-info area. When such a clone is converted back into an skb, build_skb_around() places skb_shared_info over live packet bytes and later writes can corrupt XDP return metadata. Reject clones unless their linear area fits inside SKB_WITH_OVERHEAD(PAGE_SIZE), matching the tailroom requirement already enforced by the XDP-to-skb conversion path.
INFO
Published Date :
Aug. 22, 2026, 4:16 p.m.
Last Modified :
Aug. 22, 2026, 4:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-74616
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Linux kernel to the patched version.
- Verify XDP cloning and skb conversion logic.
- Ensure SKB_WITH_OVERHEAD check is correctly implemented.
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-2026-74616.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74616 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-2026-74616
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-2026-74616 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74616 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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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 22, 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': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': '58408982fa39f9758124cec169f42854d6f98f35', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': '685edea27ac68d08fe4dbd3de74b858d2ad8e830', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'ba13763d667e008e185fedf592d53846a5b457d1', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'ef4b7c7046d29a67090de15af0da0d1ae8d1b192', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'fab820f1691a9e26d9031f18aae1e9ce09078f92', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'f463b6f4957c9c3fd1c75f8d3e5af4879fa609c0', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'e48e8edbef2eb824201495daa5234560f632b23c', 'versionType': 'git'}], 'programFiles': ['net/core/xdp.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'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': '6.6.152', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.104', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.45', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.9', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/core/xdp.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: xdp: reject clones that overrun skb_shared_info tailroom xdpf_clone() clones broadcast copies into a single page and sets frame_sz to PAGE_SIZE. __xdp_build_skb_from_frame() later treats that page like a normal XDP frame and expects the usual skb_shared_info tailroom at the end of the buffer. The current check only rejects frames whose linear xdp_frame header, headroom, and packet data exceed PAGE_SIZE. A source frame backed by a larger allocation can still satisfy that check while extending into the clone's required shared-info area. When such a clone is converted back into an skb, build_skb_around() places skb_shared_info over live packet bytes and later writes can corrupt XDP return metadata. Reject clones unless their linear area fits inside SKB_WITH_OVERHEAD(PAGE_SIZE), matching the tailroom requirement already enforced by the XDP-to-skb conversion path. Added Reference https://git.kernel.org/stable/c/58408982fa39f9758124cec169f42854d6f98f35 Added Reference https://git.kernel.org/stable/c/685edea27ac68d08fe4dbd3de74b858d2ad8e830 Added Reference https://git.kernel.org/stable/c/ba13763d667e008e185fedf592d53846a5b457d1 Added Reference https://git.kernel.org/stable/c/e48e8edbef2eb824201495daa5234560f632b23c Added Reference https://git.kernel.org/stable/c/ef4b7c7046d29a67090de15af0da0d1ae8d1b192 Added Reference https://git.kernel.org/stable/c/f463b6f4957c9c3fd1c75f8d3e5af4879fa609c0 Added Reference https://git.kernel.org/stable/c/fab820f1691a9e26d9031f18aae1e9ce09078f92