High 7.8Published May 9, 2024

CVE-2024-27395net: openvswitch: Fix Use-After-Free in ovs_ct_exit

Updated under an hour ago (Oct 28, 2026, 1:23 PM ET)

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	11efd5cb04a184eea4f57b68ea63dddd463158d1 builds before 2db9a8c0a01fa1c762c1e61a13c212c492752994; from 11efd5cb04a184eea4f57b68ea63dddd463158d1 before 589523cf0b384164e445dd5db8d5b1bf97982424; from 11efd5cb04a184eea4f57b68ea63dddd463158d1 before 35880c3fa6f8fe281a19975d2992644588ca33d3; from 11efd5cb04a184eea4f57b68ea63dddd463158d1 before 9048616553c65e750d43846f225843ed745ec0d4; from 11efd5cb04a184eea4f57b68ea63dddd463158d1 before bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1; from 11efd5cb04a184eea4f57b68ea63dddd463158d1 before eaa5e164a2110d2fb9e16c8a29e4501882235137; from 11efd5cb04a184eea4f57b68ea63dddd463158d1 before edee0758747d7c219e29db9ed1d4eb33e8d32865; 11efd5cb04a184eea4f57b68ea63dddd463158d1 builds before 5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2	CNA record
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.1	CISA ADP
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name)	all versions not affected	CISA ADP
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name)	before V3.1	CISA ADP
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	from 4.18 before 4.19.313; from 4.20 before 5.4.275; from 5.5 before 5.10.216; from 5.11 before 5.15.158; from 5.16 before 6.1.90; from 6.2 before 6.6.30; from 6.7 before 6.8.9; 6.9; and 4 more ranges	NVD
debian debian_linux debian:debian_linux	10.0	NVD

References

References

https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994	patch
https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424	patch
https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3	patch
https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4	patch
https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1	patch
https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137	patch
https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865	patch
https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html	mailing-list
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html	mailing-list
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.