High severity · published May 9, 2024
CVE-2024-27395
net: openvswitch: Fix Use-After-Free in ovs_ct_exit
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
net: openvswitch: Fix Use-After-Free in ovs_ct_exit
Since kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal
of ovs_ct_limit_exit, 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
4.18 before 4.19.313; 4.20 before 5.4.275; 5.5 before 5.10.216; 5.11 before 5.15.158; 5.16 before 6.1.90; 6.2 before 6.6.30; +6 more · source: NVD
LI
Linux · Linux
11efd5cb04a184eea4f57b68ea63dddd463158d1 before 2db9a8c0a01fa1c762c1e61a13c212c492752994; 11efd5cb04a184eea4f57b68ea63dddd463158d1 before 589523cf0b384164e445dd5db8d5b1bf97982424; 11efd5cb04a184eea4f57b68ea63dddd463158d1 before 35880c3fa6f8fe281a19975d2992644588ca33d3; 11efd5cb04a184eea4f57b68ea63dddd463158d1 before 9048616553c65e750d43846f225843ed745ec0d4; 11efd5cb04a184eea4f57b68ea63dddd463158d1 before bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1; 11efd5cb04a184eea4f57b68ea63dddd463158d1 before eaa5e164a2110d2fb9e16c8a29e4501882235137; +3 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-2024-27395
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-27395
Patch
https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994
Patch
https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3
Patch
https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424
Patch
https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2
Patch
https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4
Patch
https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1
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