net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure_CVE-2026-53229

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure\n\nIn the XSK branch of mlx5e_xmit_xdp_buff(), when sq->xmit_xdp_frame()\nreturns false (e.g. XDPSQ is full), the function returns without\nunmapping the DMA address or freeing the xdp_frame allocated by\nxdp_convert_zc_to_xdp_frame(). The xdpi_fifo push only happens on\nsuccess, so the completion path cannot recover these entries.\n\nWith CONFIG_DMA_API_DEBUG=y, the leak surfaces on driver unbind:\n\n  DMA-API: pci 0000:08:00.0: device driver has pending DMA\n  allocations while released from device [count=1116]\n  One of leaked entries details: [device address=0x000000010ffd7028]\n  [size=1534 bytes] [mapped with DMA_TO_DEVICE] [mapped as phy]\n  WARNING: kernel/dma/debug.c:881 at dma_debug_device_change+0x127/0x180\n  ...\n  DMA-API: Mapped at:\n   debug_dma_map_phys+0x4b/0xd0\n   dma_map_phys+0xfd/0x2d0\n   mlx5e_xdp_handle+0x5ae/0xac0 [mlx5_core]\n   mlx5e_xsk_skb_from_cqe_mpwrq_linear+0xc4/0x170 [mlx5_core]\n   mlx5e_handle_rx_cqe_mpwrq+0xc1/0x290 [mlx5_core]\n\nAdd the missing unmap + xdp_return_frame, matching the cleanup already\ndone in mlx5e_xdp_xmit(). has_frags is rejected earlier in this branch,\nso no per-frag unmap is needed.",
    "published": "2026-06-25T08:39:28.552Z",
    "modified": "2026-06-28T06:40:40.498Z",
    "type": "cve",
    "title": "net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/7b3eeba50fbc3b45f279037c29a87a90e8bac1e1\nhttps://git.kernel.org/stable/c/2789b74ae1f4b68333c9d5eec2f3354d07b16e61\nhttps://git.kernel.org/stable/c/0aabca726b43d833721034e97d99efcc8237b22a\nhttps://git.kernel.org/stable/c/b69004f5a6ad32da84d8aa5b23b9c0caafe6252e",
    "id": "CVE-2026-53229",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 84a0a2310d6de247335574649726cb000c7c0074\nLinux Linux 84a0a2310d6de247335574649726cb000c7c0074\nLinux Linux 84a0a2310d6de247335574649726cb000c7c0074\nLinux Linux 84a0a2310d6de247335574649726cb000c7c0074\nLinux Linux 5.3",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
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        "privilegesRequired": "",
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        "confidentialityImpact": "",
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        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "84a0a2310d6de247335574649726cb000c7c0074",
    "vendor": "Linux",
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}