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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00006.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
9f722c0978b04acba209f8ca1896ad05814bc3a3 affected < f12554b0ff639e74612cc01b3b4a049e098d2d65
9f722c0978b04acba209f8ca1896ad05814bc3a3 affected < 14184ec5c958b589ba934da7363a2877879204df
9f722c0978b04acba209f8ca1896ad05814bc3a3 affected < 1bcacd6088d61c0ac6a990d87975600a81f3247e
9f722c0978b04acba209f8ca1896ad05814bc3a3 affected < f4e6a7f19c82f39b1803e91c54718f0d7143767d
9f722c0978b04acba209f8ca1896ad05814bc3a3 affected < 81de2ed06df8b5451e050fe6a318af3263dbff3f
9f722c0978b04acba209f8ca1896ad05814bc3a3 affected < 05b2b9f7d24b5663d9b47427fe1555bdafd3ea02
9f722c0978b04acba209f8ca1896ad05814bc3a3 affected < b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88
9f722c0978b04acba209f8ca1896ad05814bc3a3 affected < c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7
Linux Linux affected
Version Status Constraints
2.6.30 affected —
0 unaffected < 2.6.30
4.4.274 unaffected ≤ 4.4.*
4.9.274 unaffected ≤ 4.9.*
4.14.238 unaffected ≤ 4.14.*
4.19.196 unaffected ≤ 4.19.*
5.4.128 unaffected ≤ 5.4.*
5.10.46 unaffected ≤ 5.10.*
5.12.13 unaffected ≤ 5.12.*
5.13 unaffected ≤ *

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*
Package CPE Advisory Released Date
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-553.8.1.rt7.349.el8_10 cpe:/a:redhat:enterprise_linux:8::nfv RHSA-2024:4352 2024-07-08T00:00:00Z
kernel-0:4.18.0-553.8.1.el8_10 cpe:/o:redhat:enterprise_linux:8 RHSA-2024:4211 2024-07-02T00:00:00Z

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/05b2b9f7d24b5663d9b47427fe1555bdafd3ea02 cve-icon cve-icon
https://git.kernel.org/stable/c/14184ec5c958b589ba934da7363a2877879204df cve-icon cve-icon
https://git.kernel.org/stable/c/1bcacd6088d61c0ac6a990d87975600a81f3247e cve-icon cve-icon
https://git.kernel.org/stable/c/81de2ed06df8b5451e050fe6a318af3263dbff3f cve-icon cve-icon
https://git.kernel.org/stable/c/b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88 cve-icon cve-icon
https://git.kernel.org/stable/c/c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7 cve-icon cve-icon
https://git.kernel.org/stable/c/f12554b0ff639e74612cc01b3b4a049e098d2d65 cve-icon cve-icon
https://git.kernel.org/stable/c/f4e6a7f19c82f39b1803e91c54718f0d7143767d cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2021-47236 cve-icon
https://www.cve.org/CVERecord?id=CVE-2021-47236 cve-icon
History

Tue, 29 Apr 2025 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-401
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics cvssV3_1

{'score': 5.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L'}

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Mon, 04 Nov 2024 12:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-05-04T07:06:52.921Z

Reserved: 2024-04-10T18:59:19.531Z

Link: CVE-2021-47236

cve-icon Vulnrichment

Updated: 2024-08-04T05:32:07.941Z

cve-icon NVD

Status : Analyzed

Published: 2024-05-21T15:15:12.857

Modified: 2025-04-29T19:44:19.887

Link: CVE-2021-47236

cve-icon Redhat

Severity : Low

Publid Date: 2024-05-21T00:00:00Z

Links: CVE-2021-47236 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses