CVE-2024-27395

2024-05-1415:12:27

Linux

web.nvd.nist.gov

1582

linux kernel

cve-2024-27395

net

openvswitch

fix use-after-free

ovs_ct_exit

hlist_for_each_entry_safe

vulnerability

nvd

AI Score

6.5

Confidence

Low

EPSS

Percentile

13.0%

JSON

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

net: openvswitch: Fix Use-After-Free in ovs_ct_exit

Since kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal
of ovs_ct_limit_exit, is not part of the RCU read critical section, it
is possible that the RCU grace period will pass during the traversal and
the key will be free.

To prevent this, it should be changed to hlist_for_each_entry_safe.

Affected configurations

Vulners

Node

linuxlinux_kernelRange4.18–4.19.313

linuxlinux_kernelRange4.20.0–5.4.275

linuxlinux_kernelRange5.5.0–5.10.216

linuxlinux_kernelRange5.11.0–5.15.158

linuxlinux_kernelRange5.16.0–6.1.90

linuxlinux_kernelRange6.2.0–6.6.30

linuxlinux_kernelRange6.7.0–6.8.9

linuxlinux_kernelRange6.9.0≥

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/openvswitch/conntrack.c"
    ],
    "versions": [
      {
        "version": "11efd5cb04a1",
        "lessThan": "2db9a8c0a01f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "11efd5cb04a1",
        "lessThan": "589523cf0b38",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "11efd5cb04a1",
        "lessThan": "35880c3fa6f8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "11efd5cb04a1",
        "lessThan": "9048616553c6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "11efd5cb04a1",
        "lessThan": "bca6fa2d9a9f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "11efd5cb04a1",
        "lessThan": "eaa5e164a211",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "11efd5cb04a1",
        "lessThan": "edee0758747d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "11efd5cb04a1",
        "lessThan": "5ea7b72d4fac",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/openvswitch/conntrack.c"
    ],
    "versions": [
      {
        "version": "4.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.18",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.313",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.275",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.216",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.158",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.90",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.30",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.9",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]