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CVE Vulnerability Details :
CVE-2026-46084
PUBLISHED
More InfoOfficial Page
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-27 May, 2026 | 12:58
Updated At-14 Jun, 2026 | 17:53
Rejected At-
▼CVE Numbering Authority (CNA)
RDMA/mana_ib: Disable RX steering on RSS QP destroy

In the Linux kernel, the following vulnerability has been resolved: RDMA/mana_ib: Disable RX steering on RSS QP destroy When an RSS QP is destroyed (e.g. DPDK exit), mana_ib_destroy_qp_rss() destroys the RX WQ objects but does not disable vPort RX steering in firmware. This leaves stale steering configuration that still points to the destroyed RX objects. If traffic continues to arrive (e.g. peer VM is still transmitting) and the VF interface is subsequently brought up (mana_open), the firmware may deliver completions using stale CQ IDs from the old RX objects. These CQ IDs can be reused by the ethernet driver for new TX CQs, causing RX completions to land on TX CQs: WARNING: mana_poll_tx_cq+0x1b8/0x220 [mana] (is_sq == false) WARNING: mana_gd_process_eq_events+0x209/0x290 (cq_table lookup fails) Fix this by disabling vPort RX steering before destroying RX WQ objects. Note that mana_fence_rqs() cannot be used here because the fence completion is delivered on the CQ, which is polled by user-mode (e.g. DPDK) and not visible to the kernel driver. Refactor the disable logic into a shared mana_disable_vport_rx() in mana_en, exported for use by mana_ib, replacing the duplicate code. The ethernet driver's mana_dealloc_queues() is also updated to call this common function.

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • drivers/infiniband/hw/mana/qp.c
  • drivers/net/ethernet/microsoft/mana/mana_en.c
  • include/net/mana/mana.h
Default Status
unaffected
Versions
Affected
  • From 0266a177631d4c6b963b5b12dd986a8c5abdbf06 before 6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f (git)
  • From 0266a177631d4c6b963b5b12dd986a8c5abdbf06 before f1ccc4d500a0b87a5599343fc2f798048836e184 (git)
  • From 0266a177631d4c6b963b5b12dd986a8c5abdbf06 before 8ba804869382ce307f2a15f5f6f2adfd791f41dc (git)
  • From 0266a177631d4c6b963b5b12dd986a8c5abdbf06 before 3be5ed233de03b00ae868cfc06e95331d8d9007c (git)
  • From 0266a177631d4c6b963b5b12dd986a8c5abdbf06 before dbeb256e8dd87233d891b170c0b32a6466467036 (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • drivers/infiniband/hw/mana/qp.c
  • drivers/net/ethernet/microsoft/mana/mana_en.c
  • include/net/mana/mana.h
Default Status
affected
Versions
Affected
  • 6.2
Unaffected
  • From 0 before 6.2 (semver)
  • From 6.6.140 through 6.6.* (semver)
  • From 6.12.86 through 6.12.* (semver)
  • From 6.18.27 through 6.18.* (semver)
  • From 7.0.4 through 7.0.* (semver)
  • From 7.1 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

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Credits

Timeline
EventDate
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References
HyperlinkResource
https://git.kernel.org/stable/c/6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f
N/A
https://git.kernel.org/stable/c/f1ccc4d500a0b87a5599343fc2f798048836e184
N/A
https://git.kernel.org/stable/c/8ba804869382ce307f2a15f5f6f2adfd791f41dc
N/A
https://git.kernel.org/stable/c/3be5ed233de03b00ae868cfc06e95331d8d9007c
N/A
https://git.kernel.org/stable/c/dbeb256e8dd87233d891b170c0b32a6466467036
N/A
Hyperlink: https://git.kernel.org/stable/c/6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/f1ccc4d500a0b87a5599343fc2f798048836e184
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/8ba804869382ce307f2a15f5f6f2adfd791f41dc
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/3be5ed233de03b00ae868cfc06e95331d8d9007c
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/dbeb256e8dd87233d891b170c0b32a6466467036
Resource: N/A
Details not found