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NVD Vulnerability Details :
CVE-2026-64207
Received
More InfoOfficial Page
Source-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-20 Jul, 2026 | 17:18
Updated At-20 Jul, 2026 | 17:18

In the Linux kernel, the following vulnerability has been resolved: net/sched: dualpi2: fix GSO backlog accounting When DualPI2 splits a GSO skb into N segments, it propagates N additional packets to its parent before returning NET_XMIT_SUCCESS. The parent then accounts for the original skb once more, leaving its qlen one larger than the number of packets actually queued. With QFQ as the parent, after all real packets are dequeued, QFQ still has a non-zero qlen while its in-service aggregate has no active classes. qfq_choose_next_agg() returns NULL and qfq_dequeue() passes the result to qfq_peek_skb(), causing a NULL pointer dereference. Follow the same pattern used by tbf_segment() and taprio: count only successfully queued segments, propagate the difference between the original skb and those segments, and return NET_XMIT_SUCCESS whenever at least one segment was queued.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
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Evaluator Description

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References
HyperlinkSourceResource
https://git.kernel.org/stable/c/05ed733b65ab977dd931e7f7ac0f62fdb81205c2416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
https://git.kernel.org/stable/c/806586e33891066487db1f002be3d455cda6b516416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
https://git.kernel.org/stable/c/c4b70c1512b8f9f33f23c2c8196dfd1210207681416baaa9-dc9f-4396-8d5f-8c081fb06d67
N/A
Hyperlink: https://git.kernel.org/stable/c/05ed733b65ab977dd931e7f7ac0f62fdb81205c2
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/806586e33891066487db1f002be3d455cda6b516
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/c4b70c1512b8f9f33f23c2c8196dfd1210207681
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Resource: N/A
Change History
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