CVE-2023-52509 ravb: Fix use-after-free issue in ravb_tx_timeout_work()

2024-03-0221:52:22

Linux

www.cve.org

cve-2023-52509

ravb

use-after-free

linux kernel

ravb_tx_timeout_work

7.7 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

10.4%

JSON

In the Linux kernel, the following vulnerability has been resolved:

ravb: Fix use-after-free issue in ravb_tx_timeout_work()

The ravb_stop() should call cancel_work_sync(). Otherwise,
ravb_tx_timeout_work() is possible to use the freed priv after
ravb_remove() was called like below:

CPU0 CPU1
ravb_tx_timeout()
ravb_remove()
unregister_netdev()
free_netdev(ndev)
// free priv
ravb_tx_timeout_work()
// use priv

unregister_netdev() will call .ndo_stop() so that ravb_stop() is
called. And, after phy_stop() is called, netif_carrier_off()
is also called. So that .ndo_tx_timeout() will not be called
after phy_stop().

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/renesas/ravb_main.c"
    ],
    "versions": [
      {
        "version": "c156633f1353",
        "lessThan": "65d34cfd4e34",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c156633f1353",
        "lessThan": "db9aafa19547",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c156633f1353",
        "lessThan": "616761cf9df9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c156633f1353",
        "lessThan": "6f6fa8061f75",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c156633f1353",
        "lessThan": "105abd68ad8f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c156633f1353",
        "lessThan": "397144287071",
        "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/renesas/ravb_main.c"
    ],
    "versions": [
      {
        "version": "4.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.2",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.259",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.199",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.136",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.59",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.5.8",
        "lessThanOrEqual": "6.5.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]