CVE-2023-52574— team: fix null-ptr-deref when team device type is changed
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于内存释放后重用。
Possible ATT&CK Techniques 1 AI
T1053 · Scheduled Task/JobAffected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1d76efe1577b4323609b1bcbfafa8b731eda071a< 1779eb51b9cc628cee551f252701a85a2a50a457 |
affected |
1d76efe1577b4323609b1bcbfafa8b731eda071a< a7fb47b9711101d2405b0eb1276fb1f9b9b270c7 |
affected | ||
1d76efe1577b4323609b1bcbfafa8b731eda071a< c5f6478686bb45f453031594ae19b6c9723a780d |
affected | ||
1d76efe1577b4323609b1bcbfafa8b731eda071a< b44dd92e2afd89eb6e9d27616858e72a67bdc1a7 |
affected | ||
1d76efe1577b4323609b1bcbfafa8b731eda071a< cd05eec2ee0cc396813a32ef675634e403748255 |
affected | ||
1d76efe1577b4323609b1bcbfafa8b731eda071a< 2f0acb0736ecc3eb85dc80ad2790d634dcb10b58 |
affected | ||
1d76efe1577b4323609b1bcbfafa8b731eda071a< cac50d9f5d876be32cb9aa21c74018468900284d |
affected | ||
1d76efe1577b4323609b1bcbfafa8b731eda071a< 492032760127251e5540a5716a70996bacf2a3fd |
affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2023-52574
Vulnerability Information
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Vulnerability Title
team: fix null-ptr-deref when team device type is changed
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
team: fix null-ptr-deref when team device type is changed
Get a null-ptr-deref bug as follows with reproducer [1].
BUG: kernel NULL pointer dereference, address: 0000000000000228
...
RIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q]
...
Call Trace:
<TASK>
? __die+0x24/0x70
? page_fault_oops+0x82/0x150
? exc_page_fault+0x69/0x150
? asm_exc_page_fault+0x26/0x30
? vlan_dev_hard_header+0x35/0x140 [8021q]
? vlan_dev_hard_header+0x8e/0x140 [8021q]
neigh_connected_output+0xb2/0x100
ip6_finish_output2+0x1cb/0x520
? nf_hook_slow+0x43/0xc0
? ip6_mtu+0x46/0x80
ip6_finish_output+0x2a/0xb0
mld_sendpack+0x18f/0x250
mld_ifc_work+0x39/0x160
process_one_work+0x1e6/0x3f0
worker_thread+0x4d/0x2f0
? __pfx_worker_thread+0x10/0x10
kthread+0xe5/0x120
? __pfx_kthread+0x10/0x10
ret_from_fork+0x34/0x50
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1b/0x30
[1]
$ teamd -t team0 -d -c '{"runner": {"name": "loadbalance"}}'
$ ip link add name t-dummy type dummy
$ ip link add link t-dummy name t-dummy.100 type vlan id 100
$ ip link add name t-nlmon type nlmon
$ ip link set t-nlmon master team0
$ ip link set t-nlmon nomaster
$ ip link set t-dummy up
$ ip link set team0 up
$ ip link set t-dummy.100 down
$ ip link set t-dummy.100 master team0
When enslave a vlan device to team device and team device type is changed
from non-ether to ether, header_ops of team device is changed to
vlan_header_ops. That is incorrect and will trigger null-ptr-deref
for vlan->real_dev in vlan_dev_hard_header() because team device is not
a vlan device.
Cache eth_header_ops in team_setup(), then assign cached header_ops to
header_ops of team net device when its type is changed from non-ether
to ether to fix the bug.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于内存释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-52574
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2023-52574 (8)
Same Patch Batch · Linux · 2024-03-02 · 57 CVEs total
| CVE-2023-52515 | 9.8 CRITICAL | RDMA/srp: Do not call scsi_done() from srp_abort() |
| CVE-2023-52530 | 8.8 HIGH | wifi: mac80211: fix potential key use-after-free |
| CVE-2023-52522 | 8.8 HIGH | net: fix possible store tearing in neigh_periodic_work() |
| CVE-2023-52502 | 8.8 HIGH | net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() |
| CVE-2024-26621 | 8.2 HIGH | mm: huge_memory: don't force huge page alignment on 32 bit |
| CVE-2023-52523 | 7.8 HIGH | bpf, sockmap: Reject sk_msg egress redirects to non-TCP sockets |
| CVE-2023-52509 | 7.8 HIGH | ravb: Fix use-after-free issue in ravb_tx_timeout_work() |
| CVE-2023-52572 | 7.8 HIGH | cifs: Fix UAF in cifs_demultiplex_thread() |
| CVE-2023-52517 | 7.8 HIGH | spi: sun6i: fix race between DMA RX transfer completion and RX FIFO drain |
| CVE-2023-52503 | 7.8 HIGH | tee: amdtee: fix use-after-free vulnerability in amdtee_close_session |
| CVE-2023-52513 | 7.5 HIGH | RDMA/siw: Fix connection failure handling |
| CVE-2023-52565 | 7.1 HIGH | media: uvcvideo: Fix OOB read |
| CVE-2023-52562 | mm/slab_common: fix slab_caches list corruption after kmem_cache_destroy() | |
| CVE-2023-52561 | arm64: dts: qcom: sdm845-db845c: Mark cont splash memory region as reserved | |
| CVE-2023-52563 | drm/meson: fix memory leak on ->hpd_notify callback | |
| CVE-2023-52564 | Revert "tty: n_gsm: fix UAF in gsm_cleanup_mux" | |
| CVE-2023-52582 | netfs: Only call folio_start_fscache() one time for each folio | |
| CVE-2023-52566 | nilfs2: fix potential use after free in nilfs_gccache_submit_read_data() | |
| CVE-2023-52518 | Bluetooth: hci_codec: Fix leaking content of local_codecs | |
| CVE-2023-52559 | iommu/vt-d: Avoid memory allocation in iommu_suspend() |
Showing top 20 of 57 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
-
CVE-2026-98384
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CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98381
veth: manage XDP program pointers during channel resize -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions
Same vendor: Linux
-
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98381
veth: manage XDP program pointers during channel resize -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions
V. Comments for CVE-2023-52574
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