Name | CVE-2024-49936 |
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. |
Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
Source Package | Release | Version | Status |
---|---|---|---|
linux (PTS) | bullseye | 5.10.223-1 | vulnerable |
bullseye (security) | 5.10.226-1 | vulnerable | |
bookworm | 6.1.106-3 | vulnerable | |
bookworm (security) | 6.1.112-1 | vulnerable | |
trixie | 6.11.5-1 | fixed | |
sid | 6.11.6-1 | fixed |
The information below is based on the following data on fixed versions.
Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
---|---|---|---|---|---|---|
linux | source | bookworm | 6.1.115-1 | |||
linux | source | (unstable) | 6.11.4-1 |
https://git.kernel.org/linus/0fa5e94a1811d68fbffa0725efe6d4ca62c03d12 (6.12-rc1)