CVE - CVE-2024-42108

CVE-ID
CVE-2024-42108	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: net: rswitch: Avoid use-after-free in rswitch_poll() The use-after-free is actually in rswitch_tx_free(), which is inlined in rswitch_poll(). Since `skb` and `gq->skbs[gq->dirty]` are in fact the same pointer, the skb is first freed using dev_kfree_skb_any(), then the value in skb->len is used to update the interface statistics. Let's move around the instructions to use skb->len before the skb is freed. This bug is trivial to reproduce using KFENCE. It will trigger a splat every few packets. A simple ARP request or ICMP echo request is enough.
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/4a41bb9f2b402469d425a1c13359d3b3ea4e6403 URL:https://git.kernel.org/stable/c/4a41bb9f2b402469d425a1c13359d3b3ea4e6403 MISC:https://git.kernel.org/stable/c/92cbbe7759193e3418f38d0d73f8fe125312c58b URL:https://git.kernel.org/stable/c/92cbbe7759193e3418f38d0d73f8fe125312c58b MISC:https://git.kernel.org/stable/c/9a0c28efeec6383ef22e97437616b920e7320b67 URL:https://git.kernel.org/stable/c/9a0c28efeec6383ef22e97437616b920e7320b67
Assigning CNA
kernel.org
Date Record Created
20240729	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 (20240729)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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