CVE-2026-46308— pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()
Possible ATT&CK Techniques 1AI
T1059 · Command and Scripting InterpreterAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | c29345fa5f66bea0790cf2219f57b974d4fc177b< cb27e43c0511e9e1ca8818d231656070b11c18cf | affected |
c29345fa5f66bea0790cf2219f57b974d4fc177b< 38d8410021b55d226847b2ac8d189d89fe5a8866 | affected | ||
c29345fa5f66bea0790cf2219f57b974d4fc177b< ec1fcddb3117d9452210e838fd37389ee61e10e8 | affected | ||
6.18 | affected | ||
< 6.18 | unaffected | ||
6.18.30≤ 6.18.* | unaffected | ||
7.0.7≤ 7.0.* | unaffected | ||
7.1≤ * | unaffected |
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I. Basic Information for CVE-2026-46308
Vulnerability Information
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Vulnerability Title
pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy() In scpsys_get_bus_protection_legacy(), of_find_node_with_property() returns a device node with its reference count incremented. The function then calls of_node_put(node) before checking whether syscon_regmap_lookup_by_phandle() returns an error. If an error occurs, dev_err_probe() dereferences the node pointer to print diagnostic information, but the node memory may have already been freed due to the earlier of_node_put(), leading to a use-after-free vulnerability. Fix this by moving the of_node_put() call after the error check, ensuring the node is still valid when accessed in the error path.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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pmdomain mediatek中scpsys_get_bus_protection_legacy函数释放后重用，可能导致释放后重用。
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-2026-46308
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-46308 (3)
Same Patch Batch · Linux · 2026-06-08 · 41 CVEs total
| CVE-2026-46289 | 9.8 CRITICAL | lib/scatterlist: fix length calculations in extract_kvec_to_sg |
| CVE-2026-46288 | 8.4 HIGH | of: unittest: fix use-after-free in of_unittest_changeset() |
| CVE-2026-46307 | 8.3 HIGH | wifi: ath5k: do not access array OOB |
| CVE-2026-46303 | 8.2 HIGH | isofs: validate Rock Ridge CE continuation extent against volume size |
| CVE-2026-46274 | 7.8 HIGH | io-wq: check that the predecessor is hashed in io_wq_remove_pending() |
| CVE-2026-46311 | 7.8 HIGH | drm/amdgpu/userq: fix access to stale wptr mapping |
| CVE-2026-46280 | 7.8 HIGH | lib: test_hmm: evict device pages on file close to avoid use-after-free |
| CVE-2026-46277 | 7.8 HIGH | mm/zone_device: do not touch device folio after calling ->folio_free() |
| CVE-2026-46275 | 7.8 HIGH | Bluetooth: hci_uart: fix UAFs and race conditions in close and init paths |
| CVE-2026-46306 | 7.5 HIGH | flow_dissector: do not dissect PPPoE PFC frames |
| CVE-2026-46304 | 7.5 HIGH | nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free |
| CVE-2026-46299 | 7.0 HIGH | hfsplus: fix held lock freed on hfsplus_fill_super() |
| CVE-2026-46312 | media: videobuf2: Set vma_flags in vb2_dma_sg_mmap | |
| CVE-2026-46313 | media: intel/ipu6: fix error pointer dereference | |
| CVE-2026-46310 | media: renesas: vsp1: Fix NULL pointer deref on module unload | |
| CVE-2026-46309 | drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise | |
| CVE-2026-46305 | staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc | |
| CVE-2025-71315 | drm/vkms: Convert to DRM's vblank timer | |
| CVE-2026-46314 | drm/v3d: Reject empty multisync extension to prevent infinite loop | |
| CVE-2026-46302 | selinux: allow multiple opens of /sys/fs/selinux/policy |
Showing top 20 of 41 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
V. Comments for CVE-2026-46308
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