CVE-2025-22005ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.5 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-401
- 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 7dd73168e273938b9e9bb42ca51b0c27d807992b before 16267a5036173d0173377545b4b6021b081d0933; 7dd73168e273938b9e9bb42ca51b0c27d807992b builds before 1bd12dfc058e1e68759d313d7727d68dbc1b8964; from 7dd73168e273938b9e9bb42ca51b0c27d807992b before 596a883c4ce2d2e9c175f25b98fed3a1f33fea38; from 7dd73168e273938b9e9bb42ca51b0c27d807992b before 77c41cdbe6bce476e08d3251c0d501feaf10a9f3; from 7dd73168e273938b9e9bb42ca51b0c27d807992b before 119dcafe36795a15ae53351cbbd6177aaf94ffef; from 7dd73168e273938b9e9bb42ca51b0c27d807992b before 29d91820184d5cbc70f3246d4911d96eaeb930d6; from 7dd73168e273938b9e9bb42ca51b0c27d807992b before d3d5b4b5ae263c3225db363ba08b937e2e2b0380; from 7dd73168e273938b9e9bb42ca51b0c27d807992b before 9740890ee20e01f99ff1dde84c63dcf089fabb98 | 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 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 5.3 before 5.4.292; from 5.5 before 5.10.236; from 5.16 before 6.1.132; from 6.2 before 6.6.85; from 6.7 before 6.12.21; from 6.13 before 6.13.9; 6.14; 6.14; and 5 more ranges | NVD |
References
- https://git.kernel.org/stable/c/16267a5036173d0173377545b4b6021b081d0933patch
- https://git.kernel.org/stable/c/1bd12dfc058e1e68759d313d7727d68dbc1b8964patch
- https://git.kernel.org/stable/c/596a883c4ce2d2e9c175f25b98fed3a1f33fea38patch
- https://git.kernel.org/stable/c/77c41cdbe6bce476e08d3251c0d501feaf10a9f3patch
- https://git.kernel.org/stable/c/119dcafe36795a15ae53351cbbd6177aaf94ffefpatch
- https://git.kernel.org/stable/c/29d91820184d5cbc70f3246d4911d96eaeb930d6patch
- https://git.kernel.org/stable/c/d3d5b4b5ae263c3225db363ba08b937e2e2b0380patch
- https://git.kernel.org/stable/c/9740890ee20e01f99ff1dde84c63dcf089fabb98patch
- 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
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.