Description
In 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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 7dd73168e273938b9e9bb42ca51b0c27d807992b, < 16267a5036173d0173377545b4b6021b081d0933; >= 7dd73168e273938b9e9bb42ca51b0c27d807992b, < 1bd12dfc058e1e68759d313d7727d68dbc1b8964; >= 7dd73168e273938b9e9bb42ca51b0c27d807992b, < 596a883c4ce2d2e9c175f25b98fed3a1f33fea38; >= 7dd73168e273938b9e9bb42ca51b0c27d807992b, < 77c41cdbe6bce476e08d3251c0d501feaf10a9f3; >= 7dd73168e273938b9e9bb42ca51b0c27d807992b, < 119dcafe36795a15ae53351cbbd6177aaf94ffef; >= 7dd73168e273938b9e9bb42ca51b0c27d807992b, < 29d91820184d5cbc70f3246d4911d96eaeb930d6; >= 7dd73168e273938b9e9bb42ca51b0c27d807992b, < d3d5b4b5ae263c3225db363ba08b937e2e2b0380; >= 7dd73168e273938b9e9bb42ca51b0c27d807992b, < 9740890ee20e01f99ff1dde84c63dcf089fabb98 |
| Linux | Linux | 5.3 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.7, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.6, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.7, < * |
References
- https://git.kernel.org/stable/c/119dcafe36795a15ae53351cbbd6177aaf94ffefPatch
- https://git.kernel.org/stable/c/16267a5036173d0173377545b4b6021b081d0933Patch
- https://git.kernel.org/stable/c/1bd12dfc058e1e68759d313d7727d68dbc1b8964Patch
- https://git.kernel.org/stable/c/29d91820184d5cbc70f3246d4911d96eaeb930d6Patch
- https://git.kernel.org/stable/c/596a883c4ce2d2e9c175f25b98fed3a1f33fea38Patch
- https://git.kernel.org/stable/c/77c41cdbe6bce476e08d3251c0d501feaf10a9f3Patch
- https://git.kernel.org/stable/c/9740890ee20e01f99ff1dde84c63dcf089fabb98Patch
- https://git.kernel.org/stable/c/d3d5b4b5ae263c3225db363ba08b937e2e2b0380Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
Timeline
- Published
- Apr 3, 2025
- Last modified
- Nov 10, 2026
- NVD status
- Modified