ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.236, 5.15.180, 5.4.292, 6.1.132, 6.12.21, 6.13.9, 6.6.85
- CVEs
- CVE-2025-22005
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 14:31 UTC · Revision 1
Source evidence
ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().
core-osv · Original sourcePublished 3 Apr 2025, 07:19 UTC
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.
osv:CVE-2025-22005
Kernel
Fixed versions: 5.4.292, 5.10.236, 5.15.180, 6.1.132, 6.6.85, 6.12.21, 6.13.9
Complete source record
{
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"url": "https://osv.dev/vulnerability/CVE-2025-22005",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().",
"summary": "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.",
"evidence": "osv:CVE-2025-22005",
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"modified": "2026-10-28T02:30:51.039913419Z",
"provider": "osv",
"references": [
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"source_id": "core-osv",
"document_id": 519642,
"published_at": "2025-04-03T07:19:06.716+00:00"
}