CVE-2024-49936
net/xen-netback: prevent UAF in xenvif_flush_hash()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 21, 2024 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
40d8abdee806d496a60ee607a6d01b1cd7fabaf0 < 3c4423b0c4b98213b3438e15061e1d08220e6982 40d8abdee806d496a60ee607a6d01b1cd7fabaf0 < a7f0073fcd12ed7de185ef2c0af9d0fa1ddef22c 40d8abdee806d496a60ee607a6d01b1cd7fabaf0 < a0465723b8581cad27164c9073fd780904cd22d4 40d8abdee806d496a60ee607a6d01b1cd7fabaf0 < efcff6ce7467f01f0753609f420333f3f2ceceda 40d8abdee806d496a60ee607a6d01b1cd7fabaf0 < 143edf098b80669d05245b2f2367dd156a83a2c5 40d8abdee806d496a60ee607a6d01b1cd7fabaf0 < d408889d4b54f5501e4becc4dbbb9065143fbf4e 40d8abdee806d496a60ee607a6d01b1cd7fabaf0 < 54d8639af5568fc41c0e274fc3ec9cf86c59fcbb 40d8abdee806d496a60ee607a6d01b1cd7fabaf0 < 0fa5e94a1811d68fbffa0725efe6d4ca62c03d12
Linux / Linux
4.7
References
git.kernel.org: https://git.kernel.org/stable/c/3c4423b0c4b98213b3438e15061e1d08220e6982 git.kernel.org: https://git.kernel.org/stable/c/a7f0073fcd12ed7de185ef2c0af9d0fa1ddef22c git.kernel.org: https://git.kernel.org/stable/c/a0465723b8581cad27164c9073fd780904cd22d4 git.kernel.org: https://git.kernel.org/stable/c/efcff6ce7467f01f0753609f420333f3f2ceceda git.kernel.org: https://git.kernel.org/stable/c/143edf098b80669d05245b2f2367dd156a83a2c5 git.kernel.org: https://git.kernel.org/stable/c/d408889d4b54f5501e4becc4dbbb9065143fbf4e git.kernel.org: https://git.kernel.org/stable/c/54d8639af5568fc41c0e274fc3ec9cf86c59fcbb git.kernel.org: https://git.kernel.org/stable/c/0fa5e94a1811d68fbffa0725efe6d4ca62c03d12 lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html