CVE-2026-53229 (GCVE-0-2026-53229)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-08-05 12:34
VLAI
Title
net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure In the XSK branch of mlx5e_xmit_xdp_buff(), when sq->xmit_xdp_frame() returns false (e.g. XDPSQ is full), the function returns without unmapping the DMA address or freeing the xdp_frame allocated by xdp_convert_zc_to_xdp_frame(). The xdpi_fifo push only happens on success, so the completion path cannot recover these entries. With CONFIG_DMA_API_DEBUG=y, the leak surfaces on driver unbind: DMA-API: pci 0000:08:00.0: device driver has pending DMA allocations while released from device [count=1116] One of leaked entries details: [device address=0x000000010ffd7028] [size=1534 bytes] [mapped with DMA_TO_DEVICE] [mapped as phy] WARNING: kernel/dma/debug.c:881 at dma_debug_device_change+0x127/0x180 ... DMA-API: Mapped at: debug_dma_map_phys+0x4b/0xd0 dma_map_phys+0xfd/0x2d0 mlx5e_xdp_handle+0x5ae/0xac0 [mlx5_core] mlx5e_xsk_skb_from_cqe_mpwrq_linear+0xc4/0x170 [mlx5_core] mlx5e_handle_rx_cqe_mpwrq+0xc1/0x290 [mlx5_core] Add the missing unmap + xdp_return_frame, matching the cleanup already done in mlx5e_xdp_xmit(). has_frags is rejected earlier in this branch, so no per-frag unmap is needed.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 84a0a2310d6de247335574649726cb000c7c0074 , < 7b3eeba50fbc3b45f279037c29a87a90e8bac1e1 (git)
Affected: 84a0a2310d6de247335574649726cb000c7c0074 , < 2789b74ae1f4b68333c9d5eec2f3354d07b16e61 (git)
Affected: 84a0a2310d6de247335574649726cb000c7c0074 , < 0aabca726b43d833721034e97d99efcc8237b22a (git)
Affected: 84a0a2310d6de247335574649726cb000c7c0074 , < b69004f5a6ad32da84d8aa5b23b9c0caafe6252e (git)
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Linux Linux Affected: 5.3
Unaffected: 0 , < 5.3 (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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              "value": "AV:N - Remote packets received by an mlx5 interface can traverse the NAPI RX/CQE path into the XSK receive helper and `XDP_TX` transmit path. In a plausible AF_XDP zero-copy/XDP_TX deployment, the attacker only needs to send network traffic to the affected interface.\nAC:L - Once the victim has the affected XDP/AF_XDP configuration, the failure condition is reliably reachable by driving the XDP transmit queue full or otherwise causing transmit rejection. There is no attacker-uncontrolled race or memory-layout dependency.\nPR:N - The packet-triggering path requires no authentication or attacker privileges after the victim system is configured. Loading the XDP program and binding the XSK pool are administrative setup prerequisites, not privileges held by the remote packet sender.\nUI:N - No victim user action is needed for each trigger. Packets are processed automatically by the NIC driver receive path.\nS:U - The bug leaks kernel/driver resources within the same kernel security authority. It does not provide a VM escape, sandbox escape, or IOMMU/DMA boundary bypass.\nC:N - The leaked `xdp_frame` page and DMA mapping are not exposed back to the attacker and are not freed for attacker-controlled reuse. The bug is a resource leak, not an information disclosure primitive.\nI:N - The failure path does not corrupt memory or create an arbitrary write primitive. The transmit WQE is not successfully queued, and the missing operation is cleanup only.\nA:H - Each failed `XDP_TX` can permanently leak an order-0 page-backed `xdp_frame` and a DMA mapping, and unauthenticated network traffic can repeat this in a high-rate XDP deployment. Sustained triggering can exhaust kernel memory or DMA/IOMMU resources and disrupt the NIC or host."
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-05T14:31:48+00:00",
      "cve": "CVE-2026-53229",
      "id": "CVE-2026-53229",
      "initial_release_date": "2026-06-25T00:00:00+00:00",
      "product_status:known_affected": "246",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53229.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-28T17:12:49Z",
      "cve": "CVE-2026-53229",
      "id": "CVE-2026-53229",
      "initial_release_date": "2026-06-26T02:09:24Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "555",
      "product_status:known_not_affected": "67",
      "product_status:recommended": "265",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-53229",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53229.json",
      "version": "12"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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