{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Wrap the tx reporter dump callback to extract the sq\n\nFunction mlx5e_tx_reporter_dump_sq() casts its void * argument to struct\nmlx5e_txqsq *, but in TX-timeout-recovery flow the argument is actually\nof type struct mlx5e_tx_timeout_ctx *.\n\n mlx5_core 0000:08:00.1 enp8s0f1: TX timeout detected\n mlx5_core 0000:08:00.1 enp8s0f1: TX timeout on queue: 1, SQ: 0x11ec, CQ: 0x146d, SQ Cons: 0x0 SQ Prod: 0x1, usecs since last trans: 21565000\n BUG: stack guard page was hit at 0000000093f1a2de (stack is 00000000b66ea0dc..000000004d932dae)\n kernel stack overflow (page fault): 0000 [#1] SMP NOPTI\n CPU: 5 PID: 95 Comm: kworker/u20:1 Tainted: G W OE 5.13.0_mlnx #1\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n Workqueue: mlx5e mlx5e_tx_timeout_work [mlx5_core]\n RIP: 0010:mlx5e_tx_reporter_dump_sq+0xd3/0x180\n [mlx5_core]\n Call Trace:\n mlx5e_tx_reporter_dump+0x43/0x1c0 [mlx5_core]\n devlink_health_do_dump.part.91+0x71/0xd0\n devlink_health_report+0x157/0x1b0\n mlx5e_reporter_tx_timeout+0xb9/0xf0 [mlx5_core]\n ? mlx5e_tx_reporter_err_cqe_recover+0x1d0/0x1d0\n [mlx5_core]\n ? mlx5e_health_queue_dump+0xd0/0xd0 [mlx5_core]\n ? update_load_avg+0x19b/0x550\n ? set_next_entity+0x72/0x80\n ? pick_next_task_fair+0x227/0x340\n ? finish_task_switch+0xa2/0x280\n   mlx5e_tx_timeout_work+0x83/0xb0 [mlx5_core]\n   process_one_work+0x1de/0x3a0\n   worker_thread+0x2d/0x3c0\n ? process_one_work+0x3a0/0x3a0\n   kthread+0x115/0x130\n ? kthread_park+0x90/0x90\n   ret_from_fork+0x1f/0x30\n --[ end trace 51ccabea504edaff ]---\n RIP: 0010:mlx5e_tx_reporter_dump_sq+0xd3/0x180\n PKRU: 55555554\n Kernel panic - not syncing: Fatal exception\n Kernel Offset: disabled\n end Kernel panic - not syncing: Fatal exception\n\nTo fix this bug add a wrapper for mlx5e_tx_reporter_dump_sq() which\nextracts the sq from struct mlx5e_tx_timeout_ctx and set it as the\nTX-timeout-recovery flow dump callback."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c"
               ],
               "versions": [
                  {
                     "version": "5f29458b77d5",
                     "lessThan": "73665165b64a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5f29458b77d5",
                     "lessThan": "07f13d58a8ec",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5f29458b77d5",
                     "lessThan": "918fc3855a65",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c"
               ],
               "versions": [
                  {
                     "version": "5.7",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.7",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.90",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.13",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.16",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/73665165b64a8f3c5b3534009a69be55bb744f05"
            },
            {
               "url": "https://git.kernel.org/stable/c/07f13d58a8ecc3baf9a488588fb38c5cb0db484f"
            },
            {
               "url": "https://git.kernel.org/stable/c/918fc3855a6507a200e9cf22c20be852c0982687"
            }
         ],
         "title": "net/mlx5e: Wrap the tx reporter dump callback to extract the sq",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-46931",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}