CVE - CVE-2021-47520

CVE-ID
CVE-2021-47520	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: can: pch_can: pch_can_rx_normal: fix use after free After calling netif_receive_skb(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is dereferenced just after the call netif_receive_skb(skb). Reordering the lines solves the issue.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/3a3c46e2eff0577454860a203be1a8295f4acb76 URL:https://git.kernel.org/stable/c/3a3c46e2eff0577454860a203be1a8295f4acb76 MISC:https://git.kernel.org/stable/c/3e193ef4e0a3f5bf92ede83ef214cb09d01b00aa URL:https://git.kernel.org/stable/c/3e193ef4e0a3f5bf92ede83ef214cb09d01b00aa MISC:https://git.kernel.org/stable/c/6c73fc931658d8cbc8a1714b326cb31eb71d16a7 URL:https://git.kernel.org/stable/c/6c73fc931658d8cbc8a1714b326cb31eb71d16a7 MISC:https://git.kernel.org/stable/c/703dde112021c93d6e89443c070e7dbd4dea612e URL:https://git.kernel.org/stable/c/703dde112021c93d6e89443c070e7dbd4dea612e MISC:https://git.kernel.org/stable/c/94cddf1e9227a171b27292509d59691819c458db URL:https://git.kernel.org/stable/c/94cddf1e9227a171b27292509d59691819c458db MISC:https://git.kernel.org/stable/c/abb4eff3dcd2e583060082a18a8dbf31f02689d4 URL:https://git.kernel.org/stable/c/abb4eff3dcd2e583060082a18a8dbf31f02689d4 MISC:https://git.kernel.org/stable/c/affbad02bf80380a7403885b9fe4a1587d1bb4f3 URL:https://git.kernel.org/stable/c/affbad02bf80380a7403885b9fe4a1587d1bb4f3 MISC:https://git.kernel.org/stable/c/bafe343a885c70dddf358379cf0b2a1c07355d8d URL:https://git.kernel.org/stable/c/bafe343a885c70dddf358379cf0b2a1c07355d8d
Assigning CNA
kernel.org
Date Record Created
20240524	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240524)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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