CVE-2024-27396 net: gtp: Fix Use-After-Free in gtp_dellink

2024-05-0916:37:18

Linux

www.cve.org

cve-2024-27396

net

gtp

fix use-after-free

gtp_dellink

linux kernel

vulnerability

9.4 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

13.1%

JSON

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

net: gtp: Fix Use-After-Free in gtp_dellink

Since call_rcu, which is called in the hlist_for_each_entry_rcu traversal
of gtp_dellink, 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.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/gtp.c"
    ],
    "versions": [
      {
        "version": "043a283d24f4",
        "lessThan": "07b20d0a3dc1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c185e1d6e275",
        "lessThan": "718df1bc226c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "94dc550a5062",
        "lessThan": "0caff3e6390f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "94dc550a5062",
        "lessThan": "2e74b3fd6bf5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "94dc550a5062",
        "lessThan": "25a1c2d4b1fc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "94dc550a5062",
        "lessThan": "2aacd4de4547",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "94dc550a5062",
        "lessThan": "cd957d1716ec",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "94dc550a5062",
        "lessThan": "f2a904107ee2",
        "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/gtp.c"
    ],
    "versions": [
      {
        "version": "5.5",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.5",
        "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"
      }
    ]
  }
]