FKIE_CVE-2021-47232

Vulnerability from fkie_nvd - Published: 2024-05-21 15:15 - Updated: 2025-04-04 14:31
Severity ?
8.4 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: can: j1939: fix Use-after-Free, hold skb ref while in use This patch fixes a Use-after-Free found by the syzbot. The problem is that a skb is taken from the per-session skb queue, without incrementing the ref count. This leads to a Use-after-Free if the skb is taken concurrently from the session queue due to a CTS.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1071065eeb33d32b7d98c2ce7591881ae7381705Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2030043e616cab40f510299f09b636285e0a3678Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/22cba878abf646cd3a02ee7c8c2cef7afe66a256Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/509ab6bfdd0c76daebbad0f0af07da712116de22Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1071065eeb33d32b7d98c2ce7591881ae7381705Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2030043e616cab40f510299f09b636285e0a3678Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/22cba878abf646cd3a02ee7c8c2cef7afe66a256Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/509ab6bfdd0c76daebbad0f0af07da712116de22Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: j1939: fix Use-after-Free, hold skb ref while in use\n\nThis patch fixes a Use-after-Free found by the syzbot.\n\nThe problem is that a skb is taken from the per-session skb queue,\nwithout incrementing the ref count. This leads to a Use-after-Free if\nthe skb is taken concurrently from the session queue due to a CTS."
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  "id": "CVE-2021-47232",
  "lastModified": "2025-04-04T14:31:13.503",
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          "baseScore": 8.4,
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
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