CVE & CISA-KEV CatalogNVD
CVE-2021-47236
MEDIUM5.5
CVSS v3
Description
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.
How to fix
Remediation Available
linuxDebian
Fixed in:5.10.46-1CVE-2021-47236
Fixed in:5.10.46-1CVE-2021-47236
Fixed in:5.10.46-1CVE-2021-47236
Fixed in:5.10.46-1CVE-2021-47236
bpftoolRocky
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
bpftoolRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
bpftool-debuginfoRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
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Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
bpftool-debuginfoRocky
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
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Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernelRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
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Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernelRocky
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kernel-abi-stablelistsRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernel-abi-stablelistsRocky
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kernel-coreRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
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kernel-coreRocky
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kernel-cross-headersRocky
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kernel-cross-headersRed Hat / RHEL
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kernel-debugRed Hat / RHEL
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kernel-debugRocky
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kernel-debug-coreRocky
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kernel-debug-coreRed Hat / RHEL
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kernel-debug-debuginfoRed Hat / RHEL
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kernel-debug-debuginfoRocky
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kernel-debug-develRocky
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kernel-debug-develRed Hat / RHEL
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Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
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kernel-debug-modulesRocky
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kernel-debug-modulesRed Hat / RHEL
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kernel-debug-modules-extraRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
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kernel-debug-modules-extraRocky
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kernel-debuginfoRed Hat / RHEL
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kernel-debuginfoRocky
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kernel-debuginfo-common-aarch64Rocky
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kernel-debuginfo-common-aarch64Red Hat / RHEL
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kernel-debuginfo-common-ppc64leRed Hat / RHEL
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kernel-debuginfo-common-ppc64leRocky
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kernel-debuginfo-common-s390xRocky
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kernel-debuginfo-common-s390xRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernel-debuginfo-common-x86_64Red Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernel-debuginfo-common-x86_64Rocky
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kernel-develRocky
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kernel-develRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
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kernel-docRocky
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kernel-docRed Hat / RHEL
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kernel-headersRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
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kernel-headersRocky
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kernel-modulesRed Hat / RHEL
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kernel-modulesRocky
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kernel-modules-extraRocky
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kernel-modules-extraRed Hat / RHEL
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kernel-rtRocky
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kernel-rtRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
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kernel-rt-coreRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-coreRocky
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kernel-rt-debugRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-debugRocky
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kernel-rt-debug-coreRocky
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-debug-coreRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-debug-debuginfoRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-debug-debuginfoRocky
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-debug-develRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-debug-develRocky
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-debug-kvmRocky
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kernel-rt-debug-kvmRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-debug-modulesRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-debug-modulesRocky
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kernel-rt-debug-modules-extraRocky
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kernel-rt-debug-modules-extraRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-debuginfoRed Hat / RHEL
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kernel-rt-debuginfoRocky
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kernel-rt-debuginfo-common-x86_64Red Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-debuginfo-common-x86_64Rocky
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kernel-rt-develRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-develRocky
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kernel-rt-kvmRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-kvmRocky
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kernel-rt-modulesRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-rt-modulesRocky
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kernel-rt-modules-extraRocky
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kernel-rt-modules-extraRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.rt7.349.el8_10RHSA-2024:4352
kernel-toolsRed Hat / RHEL
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kernel-toolsRocky
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kernel-tools-debuginfoRocky
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kernel-tools-debuginfoRed Hat / RHEL
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kernel-tools-libsRocky
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kernel-tools-libsRed Hat / RHEL
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kernel-tools-libs-develRed Hat / RHEL
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kernel-tools-libs-develRocky
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kernel-zfcpdumpRocky
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kernel-zfcpdumpRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernel-zfcpdump-coreRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernel-zfcpdump-coreRocky
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernel-zfcpdump-debuginfoRocky
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernel-zfcpdump-debuginfoRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernel-zfcpdump-develRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernel-zfcpdump-develRocky
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kernel-zfcpdump-modulesRocky
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kernel-zfcpdump-modulesRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernel-zfcpdump-modules-extraRocky
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
kernel-zfcpdump-modules-extraRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
perfRocky
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
perfRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
perf-debuginfoRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
perf-debuginfoRocky
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
python3-perfRocky
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
python3-perfRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
python3-perf-debuginfoRocky
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
python3-perf-debuginfoRed Hat / RHEL
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Fixed in:0:4.18.0-553.8.1.el8_10RHSA-2024:4211
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
0.23%probability of exploitation in 30 days
14thpercentile
Low risk: more likely to be exploited than 14% of all known CVEs.
References
Related Vulnerabilities
Other CWE-401 (Missing Release of Memory (Memory Leak)) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2020-13934 | High | 7.5 | 64% | - | Fix |
| CVE-2016-6304 | High | 7.5 | 63% | - | Fix |
| CVE-2019-12265 | Medium | 5.3 | 55% | - | Fix |
| CVE-2001-0136 | Medium | 5.0 | 45% | - | - |
| CVE-2016-4232 | High | 7.5 | 36% | - | - |
| CVE-2001-0543 | Medium | 5.0 | 21% | - | - |
Embed a live status badge for CVE-2021-47236
Markdown
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<a href="https://tridentstack.com/cve/CVE-2021-47236"><img src="https://tridentstack.com/cve/badge/CVE-2021-47236.svg" alt="CVE-2021-47236"></a>Find and fix vulnerabilities across your fleet
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-29.