CVE-2026-68120
rtase: Workaround for TX hang caused by hardware packet parsing
Description
In the Linux kernel, the following vulnerability has been resolved: rtase: Workaround for TX hang caused by hardware packet parsing The hardware performs packet parsing before packet transmission. Parsing incomplete IPv4, IPv6, TCP, or UDP headers may trigger a TX hang because the hardware parser expects additional protocol header data that is not present in the packet. The hardware performs additional PTP parsing on UDP packets identified by destination ports 319/320 at the expected UDP destination port offset. If such a packet has transport data smaller than RTASE_MIN_PAD_LEN, the hardware parser expects additional packet data and may trigger a TX hang. To avoid these hardware issues, the driver applies the following workarounds. Drop malformed packets that may trigger this hardware issue before transmission. For IPv4 non-initial fragments, the hardware does not check the fragment offset before parsing the expected transport header location. As a result, these packets are still subject to transport header parsing even though they do not contain a transport header. If the transport data is shorter than the minimum transport header required by the hardware parser, pad the transport data to the minimum transport header length required by the hardware parser. Packets that also match the hardware PTP parsing conditions continue to follow the corresponding workaround. For IPv6 fragmented packets, neither of the above hardware issues occurs because the hardware only continues packet parsing when the IPv6 Base Header Next Header field directly indicates UDP. Packets carrying a Fragment Header do not continue through the subsequent packet parsing stages. For packets identified for hardware PTP parsing, pad the transport data so it reaches RTASE_MIN_PAD_LEN before transmission.
INFO
Published Date :
Aug. 10, 2026, 1:19 p.m.
Last Modified :
Aug. 17, 2026, 5:18 a.m.
Remotely Exploit :
Yes !
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
- Drop malformed packets before transmission.
- Pad transport data for certain fragmented packets.
- Pad transport data for PTP parsing packets.
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-2026-68120.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68120 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-2026-68120
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-2026-68120 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68120 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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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': 'fe3a7320711eec6537e4890892f7ab9776d8618f', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': '4a4f3aa6af205bee539b5670afa2cd4e4953750e', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': '0f54f5048615e4e2802697855ea6374613548301', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': '1c50efa1faf3a1a96e100b07ec7a2f3164d90bee', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/realtek/rtase/rtase.h', 'drivers/net/ethernet/realtek/rtase/rtase_main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/realtek/rtase/rtase.h', 'drivers/net/ethernet/realtek/rtase/rtase_main.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': 'fe3a7320711eec6537e4890892f7ab9776d8618f', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': '4a4f3aa6af205bee539b5670afa2cd4e4953750e', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': '0f54f5048615e4e2802697855ea6374613548301', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': '1c50efa1faf3a1a96e100b07ec7a2f3164d90bee', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/realtek/rtase/rtase.h', 'drivers/net/ethernet/realtek/rtase/rtase_main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/realtek/rtase/rtase.h', 'drivers/net/ethernet/realtek/rtase/rtase_main.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 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': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': 'fe3a7320711eec6537e4890892f7ab9776d8618f', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': '4a4f3aa6af205bee539b5670afa2cd4e4953750e', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': '0f54f5048615e4e2802697855ea6374613548301', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6e882b89fdf80be0ab4f914ec10f75215e49495', 'lessThan': '1c50efa1faf3a1a96e100b07ec7a2f3164d90bee', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/realtek/rtase/rtase.h', 'drivers/net/ethernet/realtek/rtase/rtase_main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/realtek/rtase/rtase.h', 'drivers/net/ethernet/realtek/rtase/rtase_main.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: rtase: Workaround for TX hang caused by hardware packet parsing The hardware performs packet parsing before packet transmission. Parsing incomplete IPv4, IPv6, TCP, or UDP headers may trigger a TX hang because the hardware parser expects additional protocol header data that is not present in the packet. The hardware performs additional PTP parsing on UDP packets identified by destination ports 319/320 at the expected UDP destination port offset. If such a packet has transport data smaller than RTASE_MIN_PAD_LEN, the hardware parser expects additional packet data and may trigger a TX hang. To avoid these hardware issues, the driver applies the following workarounds. Drop malformed packets that may trigger this hardware issue before transmission. For IPv4 non-initial fragments, the hardware does not check the fragment offset before parsing the expected transport header location. As a result, these packets are still subject to transport header parsing even though they do not contain a transport header. If the transport data is shorter than the minimum transport header required by the hardware parser, pad the transport data to the minimum transport header length required by the hardware parser. Packets that also match the hardware PTP parsing conditions continue to follow the corresponding workaround. For IPv6 fragmented packets, neither of the above hardware issues occurs because the hardware only continues packet parsing when the IPv6 Base Header Next Header field directly indicates UDP. Packets carrying a Fragment Header do not continue through the subsequent packet parsing stages. For packets identified for hardware PTP parsing, pad the transport data so it reaches RTASE_MIN_PAD_LEN before transmission. Added Reference https://git.kernel.org/stable/c/0f54f5048615e4e2802697855ea6374613548301 Added Reference https://git.kernel.org/stable/c/1c50efa1faf3a1a96e100b07ec7a2f3164d90bee Added Reference https://git.kernel.org/stable/c/4a4f3aa6af205bee539b5670afa2cd4e4953750e Added Reference https://git.kernel.org/stable/c/fe3a7320711eec6537e4890892f7ab9776d8618f