{
   "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-sysfs: add check for netdevice being present to speed_show\n\nWhen bringing down the netdevice or system shutdown, a panic can be\ntriggered while accessing the sysfs path because the device is already\nremoved.\n\n    [  755.549084] mlx5_core 0000:12:00.1: Shutdown was called\n    [  756.404455] mlx5_core 0000:12:00.0: Shutdown was called\n    ...\n    [  757.937260] BUG: unable to handle kernel NULL pointer dereference at           (null)\n    [  758.031397] IP: [<ffffffff8ee11acb>] dma_pool_alloc+0x1ab/0x280\n\n    crash> bt\n    ...\n    PID: 12649  TASK: ffff8924108f2100  CPU: 1   COMMAND: \"amsd\"\n    ...\n     #9 [ffff89240e1a38b0] page_fault at ffffffff8f38c778\n        [exception RIP: dma_pool_alloc+0x1ab]\n        RIP: ffffffff8ee11acb  RSP: ffff89240e1a3968  RFLAGS: 00010046\n        RAX: 0000000000000246  RBX: ffff89243d874100  RCX: 0000000000001000\n        RDX: 0000000000000000  RSI: 0000000000000246  RDI: ffff89243d874090\n        RBP: ffff89240e1a39c0   R8: 000000000001f080   R9: ffff8905ffc03c00\n        R10: ffffffffc04680d4  R11: ffffffff8edde9fd  R12: 00000000000080d0\n        R13: ffff89243d874090  R14: ffff89243d874080  R15: 0000000000000000\n        ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018\n    #10 [ffff89240e1a39c8] mlx5_alloc_cmd_msg at ffffffffc04680f3 [mlx5_core]\n    #11 [ffff89240e1a3a18] cmd_exec at ffffffffc046ad62 [mlx5_core]\n    #12 [ffff89240e1a3ab8] mlx5_cmd_exec at ffffffffc046b4fb [mlx5_core]\n    #13 [ffff89240e1a3ae8] mlx5_core_access_reg at ffffffffc0475434 [mlx5_core]\n    #14 [ffff89240e1a3b40] mlx5e_get_fec_caps at ffffffffc04a7348 [mlx5_core]\n    #15 [ffff89240e1a3bb0] get_fec_supported_advertised at ffffffffc04992bf [mlx5_core]\n    #16 [ffff89240e1a3c08] mlx5e_get_link_ksettings at ffffffffc049ab36 [mlx5_core]\n    #17 [ffff89240e1a3ce8] __ethtool_get_link_ksettings at ffffffff8f25db46\n    #18 [ffff89240e1a3d48] speed_show at ffffffff8f277208\n    #19 [ffff89240e1a3dd8] dev_attr_show at ffffffff8f0b70e3\n    #20 [ffff89240e1a3df8] sysfs_kf_seq_show at ffffffff8eedbedf\n    #21 [ffff89240e1a3e18] kernfs_seq_show at ffffffff8eeda596\n    #22 [ffff89240e1a3e28] seq_read at ffffffff8ee76d10\n    #23 [ffff89240e1a3e98] kernfs_fop_read at ffffffff8eedaef5\n    #24 [ffff89240e1a3ed8] vfs_read at ffffffff8ee4e3ff\n    #25 [ffff89240e1a3f08] sys_read at ffffffff8ee4f27f\n    #26 [ffff89240e1a3f50] system_call_fastpath at ffffffff8f395f92\n\n    crash> net_device.state ffff89443b0c0000\n      state = 0x5  (__LINK_STATE_START| __LINK_STATE_NOCARRIER)\n\nTo prevent this scenario, we also make sure that the netdevice is present."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/core/net-sysfs.c"
               ],
               "versions": [
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "a7b9ab04c593",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "081369ad088a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "75fc8363227a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "8879b5313e9f",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "d15c9f6e3335",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "8d5e69d8fbf3",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "3a79f380b3e1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "4224cfd7fb65",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/core/net-sysfs.c"
               ],
               "versions": [
                  {
                     "version": "4.9.307",
                     "lessThanOrEqual": "4.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.14.272",
                     "lessThanOrEqual": "4.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.235",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.185",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.106",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.29",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.16.15",
                     "lessThanOrEqual": "5.16.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.17",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/a7b9ab04c5932dee7ec95e0abc58b0df350c0dd2"
            },
            {
               "url": "https://git.kernel.org/stable/c/081369ad088a76429984483b8a5f7e967a125aad"
            },
            {
               "url": "https://git.kernel.org/stable/c/75fc8363227a999e8f3d17e2eb28dce5600dcd3f"
            },
            {
               "url": "https://git.kernel.org/stable/c/8879b5313e9fa5e0c6d6812a0d25d83aed0110e2"
            },
            {
               "url": "https://git.kernel.org/stable/c/d15c9f6e3335002fea1c33bc8f71a705fa96976c"
            },
            {
               "url": "https://git.kernel.org/stable/c/8d5e69d8fbf3a35ab4fbe56b8f092802b43f3ef6"
            },
            {
               "url": "https://git.kernel.org/stable/c/3a79f380b3e10edf6caa9aac90163a5d7a282204"
            },
            {
               "url": "https://git.kernel.org/stable/c/4224cfd7fb6523f7a9d1c8bb91bb5df1e38eb624"
            }
         ],
         "title": "net-sysfs: add check for netdevice being present to speed_show",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2022-48850",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}