netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-27020
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-01 06:15:20 UTC
Updated2026-05-12 12:16:29 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() nft_unregister_expr() can concurrent with __nft_expr_type_get(), and there is not any protection when iterate over nf_tables_expressions list in __nft_expr_type_get(). Therefore, there is potential data-race of nf_tables_expressions list entry. Use list_for_each_entry_rcu() to iterate over nf_tables_expressions list in __nft_expr_type_get(), and use rcu_read_lock() in the caller nft_expr_type_get() to protect the entire type query process.

Risk And Classification

Primary CVSS: v3.1 7 HIGH from [email protected]

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

Problem Types: CWE-362 | CWE-362 CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1ADPDECLARED7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:L/AC:H/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 ef1f7df9170dbd875ce198ba84e6ab80f6fc139e 939109c0a8e2a006a6cc8209e262d25065f4403a git Not specified
CNA Linux Linux affected ef1f7df9170dbd875ce198ba84e6ab80f6fc139e b38a133d37fa421c8447b383d788c9cc6f5cb34c git Not specified
CNA Linux Linux affected ef1f7df9170dbd875ce198ba84e6ab80f6fc139e 934e66e231cff2b18faa2c8aad0b8cec13957e05 git Not specified
CNA Linux Linux affected ef1f7df9170dbd875ce198ba84e6ab80f6fc139e 0b6de00206adbbfc6373b3ae38d2a6f197987907 git Not specified
CNA Linux Linux affected ef1f7df9170dbd875ce198ba84e6ab80f6fc139e 8d56bad42ac4c43c6c72ddd6a654a2628bf839c5 git Not specified
CNA Linux Linux affected ef1f7df9170dbd875ce198ba84e6ab80f6fc139e a9ebf340d123ae12582210407f879d6a5a1bc25b git Not specified
CNA Linux Linux affected ef1f7df9170dbd875ce198ba84e6ab80f6fc139e 01f1a678b05ade4b1248019c2dcca773aebbeb7f git Not specified
CNA Linux Linux affected ef1f7df9170dbd875ce198ba84e6ab80f6fc139e f969eb84ce482331a991079ab7a5c4dc3b7f89bf git Not specified
CNA Linux Linux affected 3.13 Not specified
CNA Linux Linux unaffected 3.13 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 5.15.157 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.88 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.29 6.6.* semver Not specified
CNA Linux Linux unaffected 6.8.8 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
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f969eb84ce482331a991079ab7a5c4dc3b7f89bf af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/b38a133d37fa421c8447b383d788c9cc6f5cb34c af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/0b6de00206adbbfc6373b3ae38d2a6f197987907 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
cert-portal.siemens.com/productcert/html/ssa-613116.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/a9ebf340d123ae12582210407f879d6a5a1bc25b af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/8d56bad42ac4c43c6c72ddd6a654a2628bf839c5 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/939109c0a8e2a006a6cc8209e262d25065f4403a af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/01f1a678b05ade4b1248019c2dcca773aebbeb7f af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/934e66e231cff2b18faa2c8aad0b8cec13957e05 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
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