cvelist/2024/44xxx/CVE-2024-44933.json

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    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-44933",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en : Fix memory out-of-bounds in bnxt_fill_hw_rss_tbl()\n\nA recent commit has modified the code in __bnxt_reserve_rings() to\nset the default RSS indirection table to default only when the number\nof RX rings is changing.  While this works for newer firmware that\nrequires RX ring reservations, it causes the regression on older\nfirmware not requiring RX ring resrvations (BNXT_NEW_RM() returns\nfalse).\n\nWith older firmware, RX ring reservations are not required and so\nhw_resc->resv_rx_rings is not always set to the proper value.  The\ncomparison:\n\nif (old_rx_rings != bp->hw_resc.resv_rx_rings)\n\nin __bnxt_reserve_rings() may be false even when the RX rings are\nchanging.  This will cause __bnxt_reserve_rings() to skip setting\nthe default RSS indirection table to default to match the current\nnumber of RX rings.  This may later cause bnxt_fill_hw_rss_tbl() to\nuse an out-of-range index.\n\nWe already have bnxt_check_rss_tbl_no_rmgr() to handle exactly this\nscenario.  We just need to move it up in bnxt_need_reserve_rings()\nto be called unconditionally when using older firmware.  Without the\nfix, if the TX rings are changing, we'll skip the\nbnxt_check_rss_tbl_no_rmgr() call and __bnxt_reserve_rings() may also\nskip the bnxt_set_dflt_rss_indir_tbl() call for the reason explained\nin the last paragraph.  Without setting the default RSS indirection\ntable to default, it causes the regression:\n\nBUG: KASAN: slab-out-of-bounds in __bnxt_hwrm_vnic_set_rss+0xb79/0xe40\nRead of size 2 at addr ffff8881c5809618 by task ethtool/31525\nCall Trace:\n__bnxt_hwrm_vnic_set_rss+0xb79/0xe40\n bnxt_hwrm_vnic_rss_cfg_p5+0xf7/0x460\n __bnxt_setup_vnic_p5+0x12e/0x270\n __bnxt_open_nic+0x2262/0x2f30\n bnxt_open_nic+0x5d/0xf0\n ethnl_set_channels+0x5d4/0xb30\n ethnl_default_set_doit+0x2f1/0x620"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "bc57f879a420",
                                            "version_value": "abd573e9ad2b"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "98ba1d931f61",
                                            "version_value": "da03f5d1b2c3"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "6.10.4",
                                            "version_value": "6.10.5"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/abd573e9ad2ba64eaa6418a5f4eec819de28f205",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/abd573e9ad2ba64eaa6418a5f4eec819de28f205"
            },
            {
                "url": "https://git.kernel.org/stable/c/da03f5d1b2c319a2b74fe76edeadcd8fa5f44376",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/da03f5d1b2c319a2b74fe76edeadcd8fa5f44376"
            }
        ]
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