RHSA-2026:1623
Vulnerability from csaf_redhat - Published: 2026-02-02 01:17 - Updated: 2026-10-30 03:20Summary
Red Hat Security Advisory: kernel-rt security update
Severity
Important
Notes
Topic: An update for kernel-rt is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: e1000e: fix heap overflow in e1000_set_eeprom (CVE-2025-39898)
* kernel: i40e: fix idx validation in config queues msg (CVE-2025-39971)
* kernel: Linux kernel: vsock vulnerability may lead to memory corruption (CVE-2025-40248)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A heap‑overflow vulnerability was discovered in the linux kernel e1000e driver’s e1000_set_eeprom() function, insufficient validation of the requested length for an EEPROM change could allow a local, low‑privilege user to trigger memory corruption (heap overflow). A local unprivileged user with access to the driver could exploit this flaw to cause memory corruption, potentially leading to confidentiality, integrity, and availability damage.
0.0 (None)
Affected products
Fixed
12 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-0:3.10.0-1160.146.1.rt56.1298.el7.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-0:3.10.0-1160.146.1.rt56.1298.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-debug-0:3.10.0-1160.146.1.rt56.1298.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-debug-debuginfo-0:3.10.0-1160.146.1.rt56.1298.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-debug-devel-0:3.10.0-1160.146.1.rt56.1298.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-debuginfo-0:3.10.0-1160.146.1.rt56.1298.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-debuginfo-common-x86_64-0:3.10.0-1160.146.1.rt56.1298.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-devel-0:3.10.0-1160.146.1.rt56.1298.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-doc-0:3.10.0-1160.146.1.rt56.1298.el7.noarch | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-trace-0:3.10.0-1160.146.1.rt56.1298.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-trace-debuginfo-0:3.10.0-1160.146.1.rt56.1298.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-RT-ELS:kernel-rt-trace-devel-0:3.10.0-1160.146.1.rt56.1298.el7.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
A flaw was found in the Linux kernel in the Intel i40e network driver such that in the function i40e_vc_config_queues_msg(), when iterating over vf->ch[idx], the idx value is not properly validated against the range of active/initialized traffic classes (TCs). An attacker with local privileges could supply a malformed value causing an out-of-bounds access, potentially leading to memory corruption, system crash, or possible arbitrary code execution.
7.6 (High)
Affected products
Fixed
12 products, the same list as for
CVE-2025-39898
Threats
Impact
Moderate
A flaw was identified in the Intel “i40e” Ethernet driver in the Linux Kernel where the ring_len parameter supplied by a VF (virtual function) is passed unchecked to the hardware memory context. If a malicious Virtual function provides a too-large or misaligned ring_len, it may allow the device to configure excessive Tx/Rx queue length leading to memory corruption or other undefined behaviour in the driver context.
7.5 (High)
Affected products
Fixed
12 products, the same list as for
CVE-2025-39898
Threats
Impact
Moderate
A flaw was found in the Linux kernel's `vsock` component. This vulnerability occurs when a `connect()` operation on an already established socket is interrupted by a signal or timeout, causing the system to mishandle the socket's state. This incorrect handling can lead to a race condition, potentially resulting in memory corruption, such as a use-after-free or null-pointer dereference. A local attacker could exploit this to cause a denial of service or potentially escalate privileges.
7.0 (High)
Affected products
Fixed
12 products, the same list as for
CVE-2025-39898
Threats
Impact
Important
References
26 references
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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Loading…
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.