CVE-2021-47236 (GCVE-0-2021-47236)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:19 – Updated: 2026-05-11 13:50
VLAI
Title
net: cdc_eem: fix tx fixup skb leak
Summary
In the Linux kernel, the following vulnerability has been resolved: net: cdc_eem: fix tx fixup skb leak when usbnet transmit a skb, eem fixup it in eem_tx_fixup(), if skb_copy_expand() failed, it return NULL, usbnet_start_xmit() will have no chance to free original skb. fix it by free orginal skb in eem_tx_fixup() first, then check skb clone status, if failed, return NULL to usbnet.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 9f722c0978b04acba209f8ca1896ad05814bc3a3 , < f12554b0ff639e74612cc01b3b4a049e098d2d65 (git)
Affected: 9f722c0978b04acba209f8ca1896ad05814bc3a3 , < 14184ec5c958b589ba934da7363a2877879204df (git)
Affected: 9f722c0978b04acba209f8ca1896ad05814bc3a3 , < 1bcacd6088d61c0ac6a990d87975600a81f3247e (git)
Affected: 9f722c0978b04acba209f8ca1896ad05814bc3a3 , < f4e6a7f19c82f39b1803e91c54718f0d7143767d (git)
Affected: 9f722c0978b04acba209f8ca1896ad05814bc3a3 , < 81de2ed06df8b5451e050fe6a318af3263dbff3f (git)
Affected: 9f722c0978b04acba209f8ca1896ad05814bc3a3 , < 05b2b9f7d24b5663d9b47427fe1555bdafd3ea02 (git)
Affected: 9f722c0978b04acba209f8ca1896ad05814bc3a3 , < b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88 (git)
Affected: 9f722c0978b04acba209f8ca1896ad05814bc3a3 , < c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7 (git)
Create a notification for this product.
Linux Linux Affected: 2.6.30
Unaffected: 0 , < 2.6.30 (semver)
Unaffected: 4.4.274 , ≤ 4.4.* (semver)
Unaffected: 4.9.274 , ≤ 4.9.* (semver)
Unaffected: 4.14.238 , ≤ 4.14.* (semver)
Unaffected: 4.19.196 , ≤ 4.19.* (semver)
Unaffected: 5.4.128 , ≤ 5.4.* (semver)
Unaffected: 5.10.46 , ≤ 5.10.* (semver)
Unaffected: 5.12.13 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.