CVE-2021-47236
net: cdc_eem: fix tx fixup skb leak
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: cdc_eem: corrige la fuga de skb de reparación de tx cuando usbnet transmite un skb, eem lo repara en eem_tx_fixup(), si skb_copy_expand() falla, devuelve NULL, usbnet_start_xmit() No tendrá posibilidad de liberar el skb original. solucionelo primero con skb original gratuito en eem_tx_fixup(), luego verifique el estado del clon de skb, si falla, devuelva NULL a usbnet.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-04-10 CVE Reserved
- 2024-05-21 CVE Published
- 2024-05-22 EPSS Updated
- 2024-11-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-402: Transmission of Private Resources into a New Sphere ('Resource Leak')
CAPEC
References (11)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/9f722c0978b04acba209f8ca1896ad05814bc3a3 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2021-47236 | 2024-07-08 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2282581 | 2024-07-08 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.30 < 4.4.274 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.30 < 4.4.274" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.30 < 4.9.274 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.30 < 4.9.274" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.30 < 4.14.238 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.30 < 4.14.238" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.30 < 4.19.196 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.30 < 4.19.196" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.30 < 5.4.128 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.30 < 5.4.128" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.30 < 5.10.46 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.30 < 5.10.46" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.30 < 5.12.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.30 < 5.12.13" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.30 < 5.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.30 < 5.13" | en |
Affected
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