ghsa-mpjj-88pq-258q
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
xfrm: policy: fix metadata dst->dev xmit null pointer dereference
When we try to transmit an skb with metadata_dst attached (i.e. dst->dev == NULL) through xfrm interface we can hit a null pointer dereference[1] in xfrmi_xmit2() -> xfrm_lookup_with_ifid() due to the check for a loopback skb device when there's no policy which dereferences dst->dev unconditionally. Not having dst->dev can be interepreted as it not being a loopback device, so just add a check for a null dst_orig->dev.
With this fix xfrm interface's Tx error counters go up as usual.
[1] net-next calltrace captured via netconsole: BUG: kernel NULL pointer dereference, address: 00000000000000c0 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 7231 Comm: ping Kdump: loaded Not tainted 5.19.0+ #24 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-1.fc36 04/01/2014 RIP: 0010:xfrm_lookup_with_ifid+0x5eb/0xa60 Code: 8d 74 24 38 e8 26 a4 37 00 48 89 c1 e9 12 fc ff ff 49 63 ed 41 83 fd be 0f 85 be 01 00 00 41 be ff ff ff ff 45 31 ed 48 8b 03 80 c0 00 00 00 08 75 0f 41 80 bc 24 19 0d 00 00 01 0f 84 1e 02 RSP: 0018:ffffb0db82c679f0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffd0db7fcad430 RCX: ffffb0db82c67a10 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffb0db82c67a80 RBP: ffffb0db82c67a80 R08: ffffb0db82c67a14 R09: 0000000000000000 R10: 0000000000000000 R11: ffff8fa449667dc8 R12: ffffffff966db880 R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000000 FS: 00007ff35c83f000(0000) GS:ffff8fa478480000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000000c0 CR3: 000000001ebb7000 CR4: 0000000000350ee0 Call Trace: xfrmi_xmit+0xde/0x460 ? tcf_bpf_act+0x13d/0x2a0 dev_hard_start_xmit+0x72/0x1e0 __dev_queue_xmit+0x251/0xd30 ip_finish_output2+0x140/0x550 ip_push_pending_frames+0x56/0x80 raw_sendmsg+0x663/0x10a0 ? try_charge_memcg+0x3fd/0x7a0 ? __mod_memcg_lruvec_state+0x93/0x110 ? sock_sendmsg+0x30/0x40 sock_sendmsg+0x30/0x40 __sys_sendto+0xeb/0x130 ? handle_mm_fault+0xae/0x280 ? do_user_addr_fault+0x1e7/0x680 ? kvm_read_and_reset_apf_flags+0x3b/0x50 __x64_sys_sendto+0x20/0x30 do_syscall_64+0x34/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7ff35cac1366 Code: eb 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 72 c3 90 55 48 83 ec 30 44 89 4c 24 2c 4c 89 RSP: 002b:00007fff738e4028 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fff738e57b0 RCX: 00007ff35cac1366 RDX: 0000000000000040 RSI: 0000557164e4b450 RDI: 0000000000000003 RBP: 0000557164e4b450 R08: 00007fff738e7a2c R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000040 R13: 00007fff738e5770 R14: 00007fff738e4030 R15: 0000001d00000001 Modules linked in: netconsole veth br_netfilter bridge bonding virtio_net [last unloaded: netconsole] CR2: 00000000000000c0
{
"affected": [],
"aliases": [
"CVE-2022-50004"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-18T11:15:28Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: policy: fix metadata dst-\u003edev xmit null pointer dereference\n\nWhen we try to transmit an skb with metadata_dst attached (i.e. dst-\u003edev\n== NULL) through xfrm interface we can hit a null pointer dereference[1]\nin xfrmi_xmit2() -\u003e xfrm_lookup_with_ifid() due to the check for a\nloopback skb device when there\u0027s no policy which dereferences dst-\u003edev\nunconditionally. Not having dst-\u003edev can be interepreted as it not being\na loopback device, so just add a check for a null dst_orig-\u003edev.\n\nWith this fix xfrm interface\u0027s Tx error counters go up as usual.\n\n[1] net-next calltrace captured via netconsole:\n BUG: kernel NULL pointer dereference, address: 00000000000000c0\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP\n CPU: 1 PID: 7231 Comm: ping Kdump: loaded Not tainted 5.19.0+ #24\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-1.fc36 04/01/2014\n RIP: 0010:xfrm_lookup_with_ifid+0x5eb/0xa60\n Code: 8d 74 24 38 e8 26 a4 37 00 48 89 c1 e9 12 fc ff ff 49 63 ed 41 83 fd be 0f 85 be 01 00 00 41 be ff ff ff ff 45 31 ed 48 8b 03 \u003cf6\u003e 80 c0 00 00 00 08 75 0f 41 80 bc 24 19 0d 00 00 01 0f 84 1e 02\n RSP: 0018:ffffb0db82c679f0 EFLAGS: 00010246\n RAX: 0000000000000000 RBX: ffffd0db7fcad430 RCX: ffffb0db82c67a10\n RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffb0db82c67a80\n RBP: ffffb0db82c67a80 R08: ffffb0db82c67a14 R09: 0000000000000000\n R10: 0000000000000000 R11: ffff8fa449667dc8 R12: ffffffff966db880\n R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000000\n FS: 00007ff35c83f000(0000) GS:ffff8fa478480000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00000000000000c0 CR3: 000000001ebb7000 CR4: 0000000000350ee0\n Call Trace:\n \u003cTASK\u003e\n xfrmi_xmit+0xde/0x460\n ? tcf_bpf_act+0x13d/0x2a0\n dev_hard_start_xmit+0x72/0x1e0\n __dev_queue_xmit+0x251/0xd30\n ip_finish_output2+0x140/0x550\n ip_push_pending_frames+0x56/0x80\n raw_sendmsg+0x663/0x10a0\n ? try_charge_memcg+0x3fd/0x7a0\n ? __mod_memcg_lruvec_state+0x93/0x110\n ? sock_sendmsg+0x30/0x40\n sock_sendmsg+0x30/0x40\n __sys_sendto+0xeb/0x130\n ? handle_mm_fault+0xae/0x280\n ? do_user_addr_fault+0x1e7/0x680\n ? kvm_read_and_reset_apf_flags+0x3b/0x50\n __x64_sys_sendto+0x20/0x30\n do_syscall_64+0x34/0x80\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\n RIP: 0033:0x7ff35cac1366\n Code: eb 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 2c 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 72 c3 90 55 48 83 ec 30 44 89 4c 24 2c 4c 89\n RSP: 002b:00007fff738e4028 EFLAGS: 00000246 ORIG_RAX: 000000000000002c\n RAX: ffffffffffffffda RBX: 00007fff738e57b0 RCX: 00007ff35cac1366\n RDX: 0000000000000040 RSI: 0000557164e4b450 RDI: 0000000000000003\n RBP: 0000557164e4b450 R08: 00007fff738e7a2c R09: 0000000000000010\n R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000040\n R13: 00007fff738e5770 R14: 00007fff738e4030 R15: 0000001d00000001\n \u003c/TASK\u003e\n Modules linked in: netconsole veth br_netfilter bridge bonding virtio_net [last unloaded: netconsole]\n CR2: 00000000000000c0",
"id": "GHSA-mpjj-88pq-258q",
"modified": "2025-06-18T12:30:40Z",
"published": "2025-06-18T12:30:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50004"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/17ecd4a4db4783392edd4944f5e8268205083f70"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2761612bcde9776dd93ce60ce55ef0b7c7329153"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/96f2758a6d028d1ac08616de9c3c7ff2a122ecf1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e26d676c1f9f335510780b566a10475c47ce03d0"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.