5.5

CVE-2021-47236

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.

Verknüpft mit AI von unstrukturierten Daten zu bestehenden CPE der NVD
Diese Information steht angemeldeten Benutzern zur Verfügung.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
LinuxLinux Kernel Version >= 2.6.30 < 4.4.274
LinuxLinux Kernel Version >= 4.5 < 4.9.274
LinuxLinux Kernel Version >= 4.10 < 4.14.238
LinuxLinux Kernel Version >= 4.15 < 4.19.196
LinuxLinux Kernel Version >= 4.20 < 5.4.128
LinuxLinux Kernel Version >= 5.5 < 5.10.46
LinuxLinux Kernel Version >= 5.11 < 5.12.13
LinuxLinux Kernel Version5.13 Updaterc1
LinuxLinux Kernel Version5.13 Updaterc2
LinuxLinux Kernel Version5.13 Updaterc3
LinuxLinux Kernel Version5.13 Updaterc4
LinuxLinux Kernel Version5.13 Updaterc5
LinuxLinux Kernel Version5.13 Updaterc6
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.01% 0.003
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.