High severity · published May 9, 2024
CVE-2024-27396
net: gtp: Fix Use-After-Free in gtp_dellink
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
4.14.162 before 4.15; 4.19.93 before 4.19.313; 5.4.8 before 5.4.275; 5.5 before 5.10.216; 5.11 before 5.15.158; 5.16 before 6.1.90; +7 more · source: NVD
LI
Linux · Linux
043a283d24f40fea4c8a8d06b0e2694c8e372200 before 07b20d0a3dc13fb1adff10b60021a4924498da58; c185e1d6e2752a4b656c3ca878c525fa11f55757 before 718df1bc226c383dd803397d7f5d95557eb81ac7; 94dc550a5062030569d4aa76e10e50c8fc001930 before 0caff3e6390f840666b8dc1ecebf985c2ef3f1dd; 94dc550a5062030569d4aa76e10e50c8fc001930 before 2e74b3fd6bf542349758f283676dff3660327c07; 94dc550a5062030569d4aa76e10e50c8fc001930 before 25a1c2d4b1fcf938356a9688a96a6456abd44b29; 94dc550a5062030569d4aa76e10e50c8fc001930 before 2aacd4de45477582993f8a8abb9505a06426bfb6; +7 more · source: vendor
DL
Debian Linux · Debian
10.0 · source: NVD
RR
RUGGEDCOM RST2428P · Siemens
before V3.1 · source: CISA
SX
SCALANCE XCM-/XRM-/XCH-/XRH-300 family · Siemens
before V3.1 · source: CISA
SS
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens
before V1.1.1 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-27396
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-27396
Patch
https://git.kernel.org/stable/c/07b20d0a3dc13fb1adff10b60021a4924498da58
Patch
https://git.kernel.org/stable/c/0caff3e6390f840666b8dc1ecebf985c2ef3f1dd
Patch
https://git.kernel.org/stable/c/25a1c2d4b1fcf938356a9688a96a6456abd44b29
Patch
https://git.kernel.org/stable/c/2aacd4de45477582993f8a8abb9505a06426bfb6
Patch
https://git.kernel.org/stable/c/2e74b3fd6bf542349758f283676dff3660327c07
Patch
https://git.kernel.org/stable/c/718df1bc226c383dd803397d7f5d95557eb81ac7
More from Kernel
9.8
CVE-2025-39682
tls: fix handling of zero-length records on the rx_list
8.8
CVE-2026-53266
netfilter: bridge: make ebt_snat ARP rewrite writable
8.8
CVE-2013-6282
Linux Kernel Improper Input Validation Vulnerability
8.4
CVE-2022-0185
Linux Kernel Heap-Based Buffer Overflow Vulnerability
8.4
CVE-2013-2094
Linux Kernel Privilege Escalation Vulnerability