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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-31515

af_key: validate families in pfkey_send_migrate()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 08de61beab8a21c8e0b3906a97defda5f1f66ece to < d0c5aa8dd38887714f1aad04236a3620b56a5e4eaffected
  • 08de61beab8a21c8e0b3906a97defda5f1f66ece to < e06b596fc4eb01936a2e5dccad17c946d660bab8affected
  • 08de61beab8a21c8e0b3906a97defda5f1f66ece to < 8ddf8de7e758f6888988467af9ffc8adf589fb16affected
  • 08de61beab8a21c8e0b3906a97defda5f1f66ece to < d3225e6b9bd51ec177970a628fe4b11237ce87d5affected
  • 08de61beab8a21c8e0b3906a97defda5f1f66ece to < 7b18692c59afb8e5c364c8e3ac01e51dd6b52028affected
  • 08de61beab8a21c8e0b3906a97defda5f1f66ece to < 83f644ea92987c100b82d8481ae2230faeed3d34affected
  • 08de61beab8a21c8e0b3906a97defda5f1f66ece to < ee836e820a40e2ca4da8af7310bff92d586772d4affected
  • 08de61beab8a21c8e0b3906a97defda5f1f66ece to < eb2d16a7d599dc9d4df391b5e660df9949963786affected

Linux Linux

Default version status: affected

  • 2.6.21affected
  • 0 to < 2.6.21unaffected
  • 5.10.253 to ≤ 5.10.*unaffected
  • 5.15.203 to ≤ 5.15.*unaffected
  • 6.1.168 to ≤ 6.1.*unaffected
  • 6.6.131 to ≤ 6.6.*unaffected
  • 6.12.80 to ≤ 6.12.*unaffected
  • 6.18.21 to ≤ 6.18.*unaffected
  • 6.19.11 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References