CVE-2024-26898 aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts

2024-04-1710:27:48

Linux

github.com

linux kernel

vulnerability

use-after-free

aoe driver

denial of service

code execution

patch

cve-2024-26898

cve-2023-6270

AI Score

6.9

Confidence

High

EPSS

Percentile

9.9%

SSVC

Exploitation

none

Automatable

Technical Impact

total

JSON

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

aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts

This patch is against CVE-2023-6270. The description of cve is:

A flaw was found in the ATA over Ethernet (AoE) driver in the Linux
kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on
struct net_device, and a use-after-free can be triggered by racing
between the free on the struct and the access through the skbtxq
global queue. This could lead to a denial of service condition or
potential code execution.

In aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial
code is finished. But the net_device ifp will still be used in
later tx()->dev_queue_xmit() in kthread. Which means that the
dev_put(ifp) should NOT be called in the success path of skb
initial code in aoecmd_cfg_pkts(). Otherwise tx() may run into
use-after-free because the net_device is freed.

This patch removed the dev_put(ifp) in the success path in
aoecmd_cfg_pkts(), and added dev_put() after skb xmit in tx().

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "ad80c34944d7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "1a54aa506b3b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "faf0b4c5e00b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "7dd09fa80b07",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "74ca3ef68d2f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "eb48680b0255",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "079cba4f4e30",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "a16fbb800646",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "f98364e92662",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/block/aoe/aoecmd.c",
      "drivers/block/aoe/aoenet.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.22"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.22",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "4.19.311",
        "versionType": "custom",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.273",
        "versionType": "custom",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.214",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.153",
        "versionType": "custom",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.83",
        "versionType": "custom",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.23",
        "versionType": "custom",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.7.11",
        "versionType": "custom",
        "lessThanOrEqual": "6.7.*"
      },
      {
        "status": "unaffected",
        "version": "6.8.2",
        "versionType": "custom",
        "lessThanOrEqual": "6.8.*"
      },
      {
        "status": "unaffected",
        "version": "6.9",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/block/aoe/aoecmd.c",
      "drivers/block/aoe/aoenet.c"
    ],
    "defaultStatus": "affected"
  }
]

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:o:linux:linux_kernel:2.6.22:-:*:*:*:*:*:*"
    ],
    "vendor": "linux",
    "product": "linux_kernel",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.22"
      }
    ],
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"
    ],
    "vendor": "linux",
    "product": "linux_kernel",
    "versions": [
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "ad80c34944d7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "1a54aa506b3b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "faf0b4c5e00b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "7dd09fa80b07",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "74ca3ef68d2f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "eb48680b0255",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "079cba4f4e30",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "a16fbb800646",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7562f876cd93",
        "lessThan": "f98364e92662",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected"
  }
]