{
   "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: stmmac: Fix zero-division error when disabling tc cbs\n\nThe commit b8c43360f6e4 (\"net: stmmac: No need to calculate speed divider\nwhen offload is disabled\") allows the \"port_transmit_rate_kbps\" to be\nset to a value of 0, which is then passed to the \"div_s64\" function when\ntc-cbs is disabled. This leads to a zero-division error.\n\nWhen tc-cbs is disabled, the idleslope, sendslope, and credit values the\ncredit values are not required to be configured. Therefore, adding a return\nstatement after setting the txQ mode to DCB when tc-cbs is disabled would\nprevent a zero-division error."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c"
               ],
               "versions": [
                  {
                     "version": "b4bca4722fda",
                     "lessThan": "e33fe25b1efe",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2145583e5995",
                     "lessThan": "b0da9504a528",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "521d42a1c24d",
                     "lessThan": "5d43e1ad4567",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "a71b686418ee",
                     "lessThan": "03582f475242",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b8c43360f6e4",
                     "lessThan": "e297a2bf56d1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b8c43360f6e4",
                     "lessThan": "837d9df9c079",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b8c43360f6e4",
                     "lessThan": "675faf5a14c1",
                     "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/stmicro/stmmac/stmmac_tc.c"
               ],
               "versions": [
                  {
                     "version": "6.10",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.10",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.227",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.168",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.113",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.55",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10.14",
                     "lessThanOrEqual": "6.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.11.3",
                     "lessThanOrEqual": "6.11.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.12-rc1",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c"
            },
            {
               "url": "https://git.kernel.org/stable/c/b0da9504a528f05f97d926b4db74ff21917a33e9"
            },
            {
               "url": "https://git.kernel.org/stable/c/5d43e1ad4567d67af2b42d3ab7c14152ffed25c6"
            },
            {
               "url": "https://git.kernel.org/stable/c/03582f4752427f60817d896f1a827aff772bd31e"
            },
            {
               "url": "https://git.kernel.org/stable/c/e297a2bf56d12fd7f91a0c209eb6ea84361f3368"
            },
            {
               "url": "https://git.kernel.org/stable/c/837d9df9c0792902710149d1a5e0991520af0f93"
            },
            {
               "url": "https://git.kernel.org/stable/c/675faf5a14c14a2be0b870db30a70764df81e2df"
            }
         ],
         "title": "net: stmmac: Fix zero-division error when disabling tc cbs",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-49977",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}