CVE - CVE-2024-49936

CVE-ID
CVE-2024-49936	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/xen-netback: prevent UAF in xenvif_flush_hash() During the list_for_each_entry_rcu iteration call of xenvif_flush_hash, kfree_rcu does not exist inside the rcu read critical section, so if kfree_rcu is called when the rcu grace period ends during the iteration, UAF occurs when accessing head->next after the entry becomes free. Therefore, to solve this, you need to change it to list_for_each_entry_safe.
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/0fa5e94a1811d68fbffa0725efe6d4ca62c03d12 URL:https://git.kernel.org/stable/c/0fa5e94a1811d68fbffa0725efe6d4ca62c03d12 MISC:https://git.kernel.org/stable/c/143edf098b80669d05245b2f2367dd156a83a2c5 URL:https://git.kernel.org/stable/c/143edf098b80669d05245b2f2367dd156a83a2c5 MISC:https://git.kernel.org/stable/c/54d8639af5568fc41c0e274fc3ec9cf86c59fcbb URL:https://git.kernel.org/stable/c/54d8639af5568fc41c0e274fc3ec9cf86c59fcbb MISC:https://git.kernel.org/stable/c/a0465723b8581cad27164c9073fd780904cd22d4 URL:https://git.kernel.org/stable/c/a0465723b8581cad27164c9073fd780904cd22d4 MISC:https://git.kernel.org/stable/c/a7f0073fcd12ed7de185ef2c0af9d0fa1ddef22c URL:https://git.kernel.org/stable/c/a7f0073fcd12ed7de185ef2c0af9d0fa1ddef22c MISC:https://git.kernel.org/stable/c/d408889d4b54f5501e4becc4dbbb9065143fbf4e URL:https://git.kernel.org/stable/c/d408889d4b54f5501e4becc4dbbb9065143fbf4e MISC:https://git.kernel.org/stable/c/efcff6ce7467f01f0753609f420333f3f2ceceda URL:https://git.kernel.org/stable/c/efcff6ce7467f01f0753609f420333f3f2ceceda
Assigning CNA
kernel.org
Date Record Created
20241021	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 (20241021)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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