CVE-2026-46084: RDMA/mana_ib: Disable RX steering on RSS QP destroy

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• linux linux kernel6.2 and later · before 6.6.140
• linux linux kernel6.7 and later · before 6.12.86
• linux linux kernel6.13 and later · before 6.18.27
• linux linux kernel6.19 and later · before 7.0.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

• Linux Linux

  • 6.2affected
  • 0266a177631d4c6b963b5b12dd986a8c5abdbf06 and later · before 6a2d6273b6c3581ce7b90ce17b5cbb4efd19438faffected · git
  • 0266a177631d4c6b963b5b12dd986a8c5abdbf06 and later · before f1ccc4d500a0b87a5599343fc2f798048836e184affected · git
  • 0266a177631d4c6b963b5b12dd986a8c5abdbf06 and later · before 8ba804869382ce307f2a15f5f6f2adfd791f41dcaffected · git
  • 0266a177631d4c6b963b5b12dd986a8c5abdbf06 and later · before 3be5ed233de03b00ae868cfc06e95331d8d9007caffected · git
  • 0266a177631d4c6b963b5b12dd986a8c5abdbf06 and later · before dbeb256e8dd87233d891b170c0b32a6466467036affected · git
  • before 6.2not affected · semver
  • 6.6.140 and later · up to and including 6.6.*not affected · semver
  • 6.12.86 and later · up to and including 6.12.*not affected · semver
  • 6.18.27 and later · up to and including 6.18.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
  90Now
• CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
  89Now
• CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
  85Now

Published before and after this one in the same product

• ← EarlierCVE-2026-46081May 27, 2026 · crypto: acomp - fix wrong pointer stored by acomp_save_req()
  31Monitor
• ← EarlierCVE-2026-46082May 27, 2026 · KVM: SVM: Inject #UD for INVLPGA if EFER.SVME=0
  22Monitor
• Later →CVE-2026-46085May 27, 2026 · rxrpc: Fix rxkad crypto unalignment handling
  30Monitor

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.