Security readout for executives and security teams
Plain-English summary
A Linux networking flaw can fail to release a packet buffer when an AF_XDP zero-copy receive queue is full. Repeated failures may exhaust resources and disrupt network service. The supplied CVSS score is 8.2, driven mainly by high availability impact; the source bundle does not document real-world attacks.
Executive priority
Treat as a high-priority availability risk for Linux systems using AF_XDP/XSK, especially performance-sensitive network infrastructure. Patch those systems promptly after compatibility testing. For systems not using the affected path, validate applicability before emergency action; the supplied evidence does not support declaring an active exploitation incident.
Technical view
In __xsk_rcv_zc(), failure to place a descriptor on the XSK receive queue omitted xsk_buff_free(). The stable-kernel correction recycles the buffer on that failure path. The record indicates high availability and low integrity impact, but provides no demonstrated exploitation mechanism or affected-distribution mapping.
Likely exposure
Exposure is most relevant to systems using the Linux AF_XDP/XSK zero-copy receive path where receive queues can become full. The supplied version data references Linux 6.6, 6.6.15, 6.7.3, and 6.8, but its flattened ranges are ambiguous. Confirm applicability through kernel or distribution advisories and fix inclusion.
Exploitation context
The supplied record is not in CISA KEV, and no cited source reports active exploitation or a public exploit. That does not establish absence of exploitation. The CVSS vector rates network reachability, low complexity, no privileges, and no user interaction, while practical exposure still depends on the affected XSK receive path being used.
Researcher notes
The failure condition is an unsuccessful descriptor production to a full XSK receive queue. The missing cleanup call leaves the associated buffer unrecycled. The cited commits are authoritative fix references, but the supplied bundle does not establish exploit reliability, observable indicators, distribution-specific package status, or the meaning of the CVSS integrity impact.
Mitigation direction
- Update to a vendor-supported kernel containing the referenced stable fix.
- Consult the Linux distribution advisory for exact fixed package versions.
- Prioritize network-intensive systems using AF_XDP or XSK zero-copy receive queues.
- Monitor exposed systems for resource exhaustion and unexplained network disruption.
Validation and detection
- Inventory kernel versions and distribution package release identifiers.
- Determine whether workloads configure AF_XDP or XSK zero-copy receive paths.
- Verify the installed kernel includes the referenced xsk_buff_free() correction.
- Review monitoring data for buffer exhaustion, receive failures, or service instability.
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
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ATT&CK lookup starting points
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CVE-2024-35834 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H3.94.2LinuxVulnerability scoring details
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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/cce713664548284daf977739e7ff1cd59e84189cCVE reference, Linux
- https://git.kernel.org/stable/c/7b4d93d31aade99210d41cd9d4cbd2957c98bc8cCVE reference, Linux
- https://git.kernel.org/stable/c/269009893146c495f41e9572dd9319e787c2eba9CVE reference, Linux
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.