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High 7.8Published Feb 27, 2025
CVE-2025-21764ndisc: use RCU protection in ndisc_alloc_skb()
Updated under an hour ago ()
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It affects Linux and 5 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndisc_alloc_skb() ndisc_alloc_skb() can be called without RTNL or RCU being held. Add RCU protection to avoid possible UAF.
- 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)
- CWE-416
- 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 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from de09334b9326632bbf1a74bfd8b01866cbbf2f61 before 96fc896d0e5b37c12808df797397fb16f3080879; from de09334b9326632bbf1a74bfd8b01866cbbf2f61 before c30893ef3d9cde8e7e8e4fd06b53d2c935bbccb1; from de09334b9326632bbf1a74bfd8b01866cbbf2f61 before b870256dd2a5648d5ed2f22316b3ac29a7e5ed63; from de09334b9326632bbf1a74bfd8b01866cbbf2f61 before 3c2d705f5adf5d860aaef90cb4211c0fde2ba66d; from de09334b9326632bbf1a74bfd8b01866cbbf2f61 before 9e0ec817eb41a55327a46cd3ce331a9868d60304; from de09334b9326632bbf1a74bfd8b01866cbbf2f61 before bbec88e4108e8d6fb468d3817fa652140a44ff28; from de09334b9326632bbf1a74bfd8b01866cbbf2f61 before cd1065f92eb7ff21b9ba5308a86f33d1670bf926; from de09334b9326632bbf1a74bfd8b01866cbbf2f61 before 628e6d18930bbd21f2d4562228afe27694f66da9 | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | all versions | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 3.9 before 5.4.291; from 5.5 before 5.10.235; from 5.11 before 5.15.179; from 5.16 before 6.1.129; from 6.2 before 6.6.79; from 6.7 before 6.12.16; from 6.13 before 6.13.4; 6.14; and 1 more ranges | NVD |
References
- https://git.kernel.org/stable/c/96fc896d0e5b37c12808df797397fb16f3080879patch
- https://git.kernel.org/stable/c/c30893ef3d9cde8e7e8e4fd06b53d2c935bbccb1patch
- https://git.kernel.org/stable/c/b870256dd2a5648d5ed2f22316b3ac29a7e5ed63patch
- https://git.kernel.org/stable/c/3c2d705f5adf5d860aaef90cb4211c0fde2ba66dpatch
- https://git.kernel.org/stable/c/9e0ec817eb41a55327a46cd3ce331a9868d60304patch
- https://git.kernel.org/stable/c/bbec88e4108e8d6fb468d3817fa652140a44ff28patch
- https://git.kernel.org/stable/c/cd1065f92eb7ff21b9ba5308a86f33d1670bf926patch
- https://git.kernel.org/stable/c/628e6d18930bbd21f2d4562228afe27694f66da9patch
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
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.