CVE-2026-43090: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: xfrm: fix refcount leak in xfrm_migrate_policy_find syzkaller reported a memory leak in xfrm_policy_alloc: BUG: memory leak unreferenced object 0xffff888114d79000 (size 1024): comm "syz.1.17", pid 931 ... xfrm_policy_alloc+0xb3/0x4b0 net/xfrm/xfrm_policy.c:432 The root cause is a double call to xfrm_pol_hold_rcu() in xfrm_migrate_policy_find(). The lookup function already returns a policy with held reference, making the second call redundant. Remove the redundant xfrm_pol_hold_rcu() call to fix the refcount imbalance and prevent the memory leak. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Засегнати продукти

• Linux Linux: 563d5ca93e883b9dcb4b7dc8967ac569fd91820d преди 21e235a36cfb6d145cefb10728f12f5dc5412f54; 563d5ca93e883b9dcb4b7dc8967ac569fd91820d преди 836ee1b0426ea3db31531e9581cc32f513d24e32; 563d5ca93e883b9dcb4b7dc8967ac569fd91820d преди 70c2a89a3bc207c3bfbf6f21bb439809e0a4a27a; 563d5ca93e883b9dcb4b7dc8967ac569fd91820d преди 83317cce60a032c49480dcdabe146435bd689d03
• Linux Linux: 6.12; преди 6.12; 6.12.83 до 6.12.*; 6.18.24 до 6.18.*; 6.19.14 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-43090
• https://nvd.nist.gov/vuln/detail/CVE-2026-43090
• https://git.kernel.org/stable/c/21e235a36cfb6d145cefb10728f12f5dc5412f54
• https://git.kernel.org/stable/c/836ee1b0426ea3db31531e9581cc32f513d24e32
• https://git.kernel.org/stable/c/70c2a89a3bc207c3bfbf6f21bb439809e0a4a27a
• https://git.kernel.org/stable/c/83317cce60a032c49480dcdabe146435bd689d03