net: gtp: Fix Use-After-Free in gtp_dellink
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.2%
exploitation probability
0.2%top 86% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
net: gtp: Fix Use-After-Free in gtp_dellink
Since call_rcu, which is called in the hlist_for_each_entry_rcu traversal
of gtp_dellink, is not part of the RCU read critical section, it
is possible that the RCU grace period will pass during the traversal and
the key will be free.
To prevent this, it should be changed to hlist_for_each_entry_safe.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-613116.htmlhttps://git.kernel.org/stable/c/07b20d0a3dc13fb1adff10b60021a4924498da58https://git.kernel.org/stable/c/0caff3e6390f840666b8dc1ecebf985c2ef3f1ddhttps://git.kernel.org/stable/c/25a1c2d4b1fcf938356a9688a96a6456abd44b29https://git.kernel.org/stable/c/2aacd4de45477582993f8a8abb9505a06426bfb6https://git.kernel.org/stable/c/2e74b3fd6bf542349758f283676dff3660327c07https://git.kernel.org/stable/c/718df1bc226c383dd803397d7f5d95557eb81ac7https://git.kernel.org/stable/c/cd957d1716ec979d8f5bf38fc659aeb9fdaa2474https://git.kernel.org/stable/c/f2a904107ee2b647bb7794a1a82b67740d7c8a64https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlhttps://lists.debian.org/debian-lts-announce/2024/06/msg00020.html