Security readout for executives and security teams
Plain-English summary
A Linux TAP networking flaw can mishandle an undersized frame submitted through the XDP path. The resulting corrupted packet metadata may trigger access beyond the frame’s actual length or mislead downstream networking components. Exploitation requires local, low-privileged access according to the supplied CVSS vector; ordinary internet exposure alone is not identified as sufficient.
Executive priority
Treat this as an accelerated kernel-patching issue on multi-user or workload-hosting systems with reachable TAP/XDP networking. Prioritize exposed hosts, but do not characterize it as remotely exploitable or actively exploited without additional evidence. Use normal emergency-change controls where business-critical networking makes kernel updates operationally sensitive.
Technical view
tap_get_user_xdp() failed to reject frames shorter than ETH_HLEN before calling skb_set_network_header() and forwarding the skb. This can create header metadata inconsistent with the underlying buffer, enabling out-of-bounds access or incorrect downstream processing. The upstream correction aligns this path with tap_get_user() by dropping undersized Ethernet frames.
Likely exposure
Exposure is most likely on affected Linux kernels where an untrusted local user or workload can reach the TAP XDP frame-processing path. The supplied version data is insufficiently structured to determine every affected distribution package reliably, so kernel builds must be checked against vendor backport information and the referenced stable fixes.
Exploitation context
The supplied CVSS 3.1 score is 8.8 with local access, low privileges, low complexity, no user interaction, changed scope, and high potential impacts. The CVE is not marked as KEV, and the supplied sources provide no evidence of active exploitation. Practical exploitability remains dependent on access to the affected TAP/XDP path.
Researcher notes
The defect is a missing minimum-length check specific to tap_get_user_xdp(); the alternative tap_get_user() path already rejects frames shorter than an Ethernet header. The described outcomes are corrupted skb metadata, possible out-of-bounds access, and downstream confusion. The bundle does not establish a demonstrated exploit, affected configuration prevalence, or exact distribution-level version ranges.
Mitigation direction
- Apply the vendor kernel update incorporating the applicable upstream stable fix.
- Reboot and confirm the updated kernel is running.
- Check distribution advisories for exact package versions and backport status.
- Prioritize systems where low-privileged users or workloads can access TAP/XDP networking.
Validation and detection
- Inventory running kernel versions and distribution package revisions.
- Determine whether untrusted local principals can reach TAP interfaces using the XDP path.
- Confirm the installed kernel contains the applicable referenced stable fix or vendor backport.
- After remediation, verify every host booted into its updated kernel.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2024-41090 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H26LinuxVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/8be915fc5ff9a5e296f6538be12ea75a1a93bdeaCVE reference, Linux
- https://git.kernel.org/stable/c/7431144b406ae82807eb87d8c98e518475b0450fCVE reference, Linux
- https://git.kernel.org/stable/c/e5e5e63c506b93b89b01f522b6a7343585f784e6CVE reference, Linux
- https://git.kernel.org/stable/c/ee93e6da30377cf2a75e16cd32bb9fcd86a61c46CVE reference, Linux
- https://git.kernel.org/stable/c/aa6a5704cab861c9b2ae9f475076e1881e87f5aaCVE reference, Linux
- https://git.kernel.org/stable/c/73d462a38d5f782b7c872fe9ae8393d9ef5483daCVE reference, Linux
- https://git.kernel.org/stable/c/e1a786b9bbb767fd1c922d424aaa8078cc542309CVE reference, Linux
- https://git.kernel.org/stable/c/ed7f2afdd0e043a397677e597ced0830b83ba0b3CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.htmlCVE reference, CVE
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.