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mlxsw: spectrum_mr: Fix use-after-free when updating multicast route stats

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_mr: Fix use-after-free when updating multicast route stats Cited commit added a dedicated mutex (instead of RTNL) to protect the multicast route list, so that it will not change while the driver periodically traverses it in order to update the kernel about multicast route stats that were queried from the device. One instance of list entry deletion (during route replace) was missed and it can result in a use-after-free [1]. Fix by acquiring the mutex before deleting the entry from the list and releasing it afterwards. [1] BUG: KASAN: slab-use-after-free in mlxsw_sp_mr_stats_update+0x4a5/0x540 drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c:1006 [mlxsw_spectrum] Read of size 8 at addr ffff8881523c2fa8 by task kworker/2:5/22043 CPU: 2 UID: 0 PID: 22043 Comm: kworker/2:5 Not tainted 6.18.0-rc1-custom-g1a3d6d7cd014 #1 PREEMPT(full) Hardware name: Mellanox Technologies Ltd. MSN2010/SA002610, BIOS 5.6.5 08/24/2017 Workqueue: mlxsw_core mlxsw_sp_mr_stats_update [mlxsw_spectrum] Call Trace: dump_stack_lvl+0xba/0x110 print_report+0x174/0x4f5 kasan_report+0xdf/0x110 mlxsw_sp_mr_stats_update+0x4a5/0x540 drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c:1006 [mlxsw_spectrum] process_one_work+0x9cc/0x18e0 worker_thread+0x5df/0xe40 kthread+0x3b8/0x730 ret_from_fork+0x3e9/0x560 ret_from_fork_asm+0x1a/0x30 Allocated by task 29933: kasan_save_stack+0x30/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x8f/0xa

Announced Source revision 1
Original source ↗

CVE-2025-68800

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2025-68800

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "f38656d067257cc43b652958dd154e1ab0773701",
        "lessThan": "b957366f5611bbaba03dd10ef861283347ddcc88",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f38656d067257cc43b652958dd154e1ab0773701",
        "lessThan": "6e367c361a523a4b54fe618215c64a0ee189caf0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f38656d067257cc43b652958dd154e1ab0773701",
        "lessThan": "37ca08b35a27ce8fd8e74dd3fd2ae21c23b63b73",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f38656d067257cc43b652958dd154e1ab0773701",
        "lessThan": "5f2831fc593c2b2efbff7dd0dd7441cec76adcd5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f38656d067257cc43b652958dd154e1ab0773701",
        "lessThan": "216afc198484fde110ebeafc017992266f4596ce",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f38656d067257cc43b652958dd154e1ab0773701",
        "lessThan": "4049a6ace209f4ed150429f86ae796d7d6a4c22b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f38656d067257cc43b652958dd154e1ab0773701",
        "lessThan": "8ac1dacec458f55f871f7153242ed6ab60373b90",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.7"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.7",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.248",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.198",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.160",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.120",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.64",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.3",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2025-68800

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#39126 · Revision 1
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Publisher date
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