ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-22005
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-04-03 08:15:16 UTC
Updated2026-07-14 13:17:29 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw(). fib_check_nh_v6_gw() expects that fib6_nh_init() cleans up everything when it fails. Commit 7dd73168e273 ("ipv6: Always allocate pcpu memory in a fib6_nh") moved fib_nh_common_init() before alloc_percpu_gfp() within fib6_nh_init() but forgot to add cleanup for fib6_nh->nh_common.nhc_pcpu_rth_output in case it fails to allocate fib6_nh->rt6i_pcpu, resulting in memleak. Let's call fib_nh_common_release() and clear nhc_pcpu_rth_output in the error path. Note that we can remove the fib6_nh_release() call in nh_create_ipv6() later in net-next.git.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: CWE-401 | CWE-401 CWE-401 Missing Release of Memory after Effective Lifetime

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1ADPDECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 7dd73168e273938b9e9bb42ca51b0c27d807992b 16267a5036173d0173377545b4b6021b081d0933 git Not specified
CNA Linux Linux affected 7dd73168e273938b9e9bb42ca51b0c27d807992b 1bd12dfc058e1e68759d313d7727d68dbc1b8964 git Not specified
CNA Linux Linux affected 7dd73168e273938b9e9bb42ca51b0c27d807992b 596a883c4ce2d2e9c175f25b98fed3a1f33fea38 git Not specified
CNA Linux Linux affected 7dd73168e273938b9e9bb42ca51b0c27d807992b 77c41cdbe6bce476e08d3251c0d501feaf10a9f3 git Not specified
CNA Linux Linux affected 7dd73168e273938b9e9bb42ca51b0c27d807992b 119dcafe36795a15ae53351cbbd6177aaf94ffef git Not specified
CNA Linux Linux affected 7dd73168e273938b9e9bb42ca51b0c27d807992b 29d91820184d5cbc70f3246d4911d96eaeb930d6 git Not specified
CNA Linux Linux affected 7dd73168e273938b9e9bb42ca51b0c27d807992b d3d5b4b5ae263c3225db363ba08b937e2e2b0380 git Not specified
CNA Linux Linux affected 7dd73168e273938b9e9bb42ca51b0c27d807992b 9740890ee20e01f99ff1dde84c63dcf089fabb98 git Not specified
CNA Linux Linux affected 5.3 Not specified
CNA Linux Linux unaffected 5.3 semver Not specified
CNA Linux Linux unaffected 5.4.292 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.236 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.180 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.132 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.85 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.21 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13.9 6.13.* semver Not specified
CNA Linux Linux unaffected 6.14 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2025/05/msg00030.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/119dcafe36795a15ae53351cbbd6177aaf94ffef 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/29d91820184d5cbc70f3246d4911d96eaeb930d6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/9740890ee20e01f99ff1dde84c63dcf089fabb98 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/77c41cdbe6bce476e08d3251c0d501feaf10a9f3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/16267a5036173d0173377545b4b6021b081d0933 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-019113.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/d3d5b4b5ae263c3225db363ba08b937e2e2b0380 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/1bd12dfc058e1e68759d313d7727d68dbc1b8964 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/05/msg00045.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/596a883c4ce2d2e9c175f25b98fed3a1f33fea38 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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