In the Linux kernel, the following vulnerability has been resolved:
af_key: validate families in pfkey_send_migrate()
syzbot was able to trigger a crash in skb_put() [1]
Issue is that pfkey_send_migrate() does not check old/new families,
and that set_ipsecrequest() @family argument was truncated,
thus possibly overfilling the skb.
Validate families early, do not wait set_ipsecrequest().
[1]
skbuff: skb_over_panic: text:ffffffff8a752120 len:392 put:16 head:ffff88802a4ad040 data:ffff88802a4ad040 tail:0x188 end:0x180 dev:<NULL>
kernel BUG at net/core/skbuff.c:214 !
Call Trace:
<TASK>
skb_over_panic net/core/skbuff.c:219 [inline]
skb_put+0x159/0x210 net/core/skbuff.c:2655
skb_put_zero include/linux/skbuff.h:2788 [inline]
set_ipsecrequest net/key/af_key.c:3532 [inline]
pfkey_send_migrate+0x1270/0x2e50 net/key/af_key.c:3636
km_migrate+0x155/0x260 net/xfrm/xfrm_state.c:2848
xfrm_migrate+0x2140/0x2450 net/xfrm/xfrm_policy.c:4705
xfrm_do_migrate+0x8ff/0xaa0 net/xfrm/xfrm_user.c:3150
References
Configurations
Configuration 1 (hide)
|
History
28 Apr 2026, 16:20
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux
Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| References | () https://git.kernel.org/stable/c/7b18692c59afb8e5c364c8e3ac01e51dd6b52028 - Patch | |
| References | () https://git.kernel.org/stable/c/83f644ea92987c100b82d8481ae2230faeed3d34 - Patch | |
| References | () https://git.kernel.org/stable/c/8ddf8de7e758f6888988467af9ffc8adf589fb16 - Patch | |
| References | () https://git.kernel.org/stable/c/d0c5aa8dd38887714f1aad04236a3620b56a5e4e - Patch | |
| References | () https://git.kernel.org/stable/c/d3225e6b9bd51ec177970a628fe4b11237ce87d5 - Patch | |
| References | () https://git.kernel.org/stable/c/e06b596fc4eb01936a2e5dccad17c946d660bab8 - Patch | |
| References | () https://git.kernel.org/stable/c/eb2d16a7d599dc9d4df391b5e660df9949963786 - Patch | |
| References | () https://git.kernel.org/stable/c/ee836e820a40e2ca4da8af7310bff92d586772d4 - Patch | |
| CWE | CWE-476 | |
| CPE | cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.21:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* |
22 Apr 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-22 14:16
Updated : 2026-04-28 16:20
NVD link : CVE-2026-31515
Mitre link : CVE-2026-31515
CVE.ORG link : CVE-2026-31515
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference