net: openvswitch: Fix Use-After-Free in ovs_ct_exit

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Summary

CVECVE-2024-27395
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-14 15:12:27 UTC
Updated2026-05-12 12:16:32 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-416

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 11efd5cb04a184eea4f57b68ea63dddd463158d1 2db9a8c0a01fa1c762c1e61a13c212c492752994 git Not specified
CNA Linux Linux affected 11efd5cb04a184eea4f57b68ea63dddd463158d1 589523cf0b384164e445dd5db8d5b1bf97982424 git Not specified
CNA Linux Linux affected 11efd5cb04a184eea4f57b68ea63dddd463158d1 35880c3fa6f8fe281a19975d2992644588ca33d3 git Not specified
CNA Linux Linux affected 11efd5cb04a184eea4f57b68ea63dddd463158d1 9048616553c65e750d43846f225843ed745ec0d4 git Not specified
CNA Linux Linux affected 11efd5cb04a184eea4f57b68ea63dddd463158d1 bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1 git Not specified
CNA Linux Linux affected 11efd5cb04a184eea4f57b68ea63dddd463158d1 eaa5e164a2110d2fb9e16c8a29e4501882235137 git Not specified
CNA Linux Linux affected 11efd5cb04a184eea4f57b68ea63dddd463158d1 edee0758747d7c219e29db9ed1d4eb33e8d32865 git Not specified
CNA Linux Linux affected 11efd5cb04a184eea4f57b68ea63dddd463158d1 5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2 git Not specified
CNA Linux Linux affected 4.18 Not specified
CNA Linux Linux unaffected 4.18 semver Not specified
CNA Linux Linux unaffected 4.19.313 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.275 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.216 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.158 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.90 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.30 6.6.* semver Not specified
CNA Linux Linux unaffected 6.8.9 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified
ADP Siemens RUGGEDCOM RST2428P affected V3.1 custom Not specified
ADP Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 Family unaffected * custom Not specified
ADP Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 Family affected V3.1 custom Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-613116.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
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