mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path

{
  "id": "6c2974fb6231cb5fc8231f3e114a63fde439ded027456b2d4238caa7b5f67af4",
  "url": "https://osv.dev/vulnerability/CVE-2024-26595",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path When calling mlxsw_sp_acl_tcam_region_destroy() from an error path after failing to attach the region to an ACL group, we hit a NULL pointer dereference upon 'region->group->tcam' [1]. Fix by retrieving the 'tcam' pointer using mlxsw_sp_acl_to_tcam(). [1] BUG: kernel NULL pointer dereference, address: 0000000000000000 [...] RIP: 0010:mlxsw_sp_acl_tcam_region_destroy+0xa0/0xd0 [...] Call Trace: mlxsw_sp_acl_tcam_vchunk_get+0x88b/0xa20 mlxsw_sp_acl_tcam_ventry_add+0x25/0xe0 mlxsw_sp_acl_rule_add+0x47/0x240 mlxsw_sp_flower_replace+0x1a9/0x1d0 tc_setup_cb_add+0xdc/0x1c0 fl_hw_replace_filter+0x146/0x1f0 fl_change+0xc17/0x1360 tc_new_tfilter+0x472/0xb90 rtnetlink_rcv_msg+0x313/0x3b0 netlink_rcv_skb+0x58/0x100 netlink_unicast+0x244/0x390 netlink_sendmsg+0x1e4/0x440 ____sys_sendmsg+0x164/0x260 ___sys_sendmsg+0x9a/0xe0 __sys_sendmsg+0x7a/0xc0 do_syscall_64+0x40/0xe0 entry_SYSCALL_64_after_hwframe+0x63/0x6b",
    "evidence": "osv:CVE-2024-26595",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.120",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.14",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.7.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-26595",
      "aliases": [
        "CVE-2024-26595"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "22a677661f5624539d394f681276171f92d714df"
                },
                {
                  "fixed": "75fa2d8b3c0175b519c99ace54ab8474cfd0077e"
                },
                {
                  "fixed": "817840d125a370626895df269c50c923b79b0a39"
                },
                {
                  "fixed": "d0a1efe417c97a1e9b914056ee6b86f1ef75fe1f"
                },
                {
                  "fixed": "efeb7dfea8ee10cdec11b6b6ba4e405edbe75809"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26595.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.11.0"
                },
                {
                  "fixed": "6.1.120"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.14"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.7.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26595.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.818926369Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/75fa2d8b3c0175b519c99ace54ab8474cfd0077e",
        "https://git.kernel.org/stable/c/817840d125a370626895df269c50c923b79b0a39",
        "https://git.kernel.org/stable/c/d0a1efe417c97a1e9b914056ee6b86f1ef75fe1f",
        "https://git.kernel.org/stable/c/efeb7dfea8ee10cdec11b6b6ba4e405edbe75809",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26595.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-26595",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26595.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-26595",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 497434,
  "published_at": "2024-02-23T14:46:24.767+00:00"
}