Tracker / CVE-2026-43090
CVE-2026-43090
Medium 5.5
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.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 6.12 → 6.12.83 |
| linux | linux_kernel · 6.13 → 6.18.24 |
| linux | linux_kernel · 6.19 → 6.19.14 |
Analysis
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