ipv4: use RCU protection in __ip_rt_update_pmtu()
Summary
| CVE | CVE-2025-21766 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-02-27 03:15:17 UTC |
| Updated | 2026-05-12 13:16:36 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: ipv4: use RCU protection in __ip_rt_update_pmtu() __ip_rt_update_pmtu() must use RCU protection to make sure the net structure it reads does not disappear. |
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: NVD-CWE-noinfo
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS: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)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 2fbc6e89b2f1403189e624cabaf73e189c5e50c6 ce3c6165fce0f06305c806696882a3ad4b90e33f git | Not specified |
| CNA | Linux | Linux | affected 2fbc6e89b2f1403189e624cabaf73e189c5e50c6 ea07480b23225942208f1b754fea1e7ec486d37e git | Not specified |
| CNA | Linux | Linux | affected 2fbc6e89b2f1403189e624cabaf73e189c5e50c6 9b1766d1ff5fe496aabe9fc5f4e34e53f35c11c4 git | Not specified |
| CNA | Linux | Linux | affected 2fbc6e89b2f1403189e624cabaf73e189c5e50c6 4583748b65dee4d61bd50a2214715b4237bc152a git | Not specified |
| CNA | Linux | Linux | affected 2fbc6e89b2f1403189e624cabaf73e189c5e50c6 a39f61d212d822b3062d7f70fa0588e50e55664e git | Not specified |
| CNA | Linux | Linux | affected 2fbc6e89b2f1403189e624cabaf73e189c5e50c6 139512191bd06f1b496117c76372b2ce372c9a41 git | Not specified |
| CNA | Linux | Linux | affected f415c264176e6095e9dee823e09c5bdd0ee0d337 git | Not specified |
| CNA | Linux | Linux | affected 98776a365da509ad923083ae54b38ee521c52742 git | Not specified |
| CNA | Linux | Linux | affected 860e2cc78c697c95bc749abb20047239fa1722ea git | Not specified |
| CNA | Linux | Linux | affected 2b1be6c925cdf4638811765a9160796291494b89 git | Not specified |
| CNA | Linux | Linux | affected 5.9 | Not specified |
| CNA | Linux | Linux | unaffected 5.9 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.179 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.129 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.79 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.16 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.13.4 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 V3.1.5 * custom | Not specified |
| ADP | Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | affected V3.1.5 * custom | Not specified |
| ADP | Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | affected V3.1.5 * custom | Not specified |
| ADP | Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | affected V3.1.5 * custom | Not specified |
| ADP | Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | affected V3.1.5 * custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| cert-portal.siemens.com/productcert/html/ssa-082556.html | 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e | cert-portal.siemens.com | |
| git.kernel.org/stable/c/ce3c6165fce0f06305c806696882a3ad4b90e33f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/ea07480b23225942208f1b754fea1e7ec486d37e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/9b1766d1ff5fe496aabe9fc5f4e34e53f35c11c4 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/4583748b65dee4d61bd50a2214715b4237bc152a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/139512191bd06f1b496117c76372b2ce372c9a41 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/a39f61d212d822b3062d7f70fa0588e50e55664e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| lists.debian.org/debian-lts-announce/2025/03/msg00028.html | af854a3a-2127-422b-91ae-364da2661108 | lists.debian.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.