CVE-2026-92484— cxl/region: Fix use-after-free in find_pos_and_ways() error path
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 内核中，以下漏洞已得到修复： cxl/region：修复 find_pos_and_ways() 错误路径中的释放后使用（use-after-free）问题 在 函数的错误处理路径中，代码在记录包含交换机解码器（switch decoder）名称的错误日志之前，就释放了该解码器的引用。如果这个被释放的引用是最后一个引用，那么解码器可能会在错误信息尝试访问其名称之前就被释放，从而导致内存使用已释放的内存（use-after-free）。 修复方式：将引用的释放操作推迟到错误报告完成之后。
Affected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 9d90ab45d3d393532b7fa62d6a6b7ebbde9cf5fc< 68edf359b0b45cad2654510c1ca257079b241aa5 |
affected |
b3dc5c735a754142831f705068fcfa77551724ff< b38ca9ce8c7d9b8151bb9e4770404c5e39600a48 |
affected | ||
d90acdf49e18029cfe4194475c45ef143657737a< f54b96e8aadbfc7f2a1b26df349ef9b062c47d2e |
affected | ||
d90acdf49e18029cfe4194475c45ef143657737a< 8f7683ce37a53eeabd721941517341d2eef2cf3c |
affected | ||
d90acdf49e18029cfe4194475c45ef143657737a< 15da704b732332cc1e8f121f624e5e6c05124c5d |
affected | ||
8ad454d3050a40fd616d481e48d1aebb27d9951e |
affected | ||
6.6.96< 6.6.157 |
affected | ||
6.12.36< 6.12.110 |
affected | ||
| … +8 more rows | |||
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I. Basic Information for CVE-2026-92484
Vulnerability Information
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Vulnerability Title
cxl/region: Fix use-after-free in find_pos_and_ways() error path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
cxl/region: Fix use-after-free in find_pos_and_ways() error path
The error path releases its reference to a switch decoder before
logging an error that includes the decoder name. If the released
reference is the last one, the decoder can be freed before the error
message accesses its name.
Drop the reference after the error is reported.
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
Affected Products
II. Public POCs for CVE-2026-92484
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-92484 (5)
Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total
| CVE-2026-92489 | 9.8 CRITICAL | xfrm: Fix skb double-free in xfrm_dev_direct_output() |
| CVE-2026-90235 | 9.8 CRITICAL | sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE |
| CVE-2026-90173 | 9.8 CRITICAL | smb: smbdirect: free completion queues with ib_free_cq() |
| CVE-2026-90104 | 9.8 CRITICAL | NFSv4.1: zero referring call lists before decoding |
| CVE-2026-90151 | 9.8 CRITICAL | NFSv4: remove callback IDR entry on client allocation failure |
| CVE-2026-90110 | 9.4 CRITICAL | inetpeer: randomize RB-tree node comparison using SipHash |
| CVE-2026-90230 | 9.1 CRITICAL | nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate() |
| CVE-2026-90414 | 9.1 CRITICAL | IB/isert: reject PDUs declaring more data than was received |
| CVE-2026-90413 | 9.1 CRITICAL | IB/isert: reject login PDUs declaring more data than was received |
| CVE-2026-90367 | 8.8 HIGH | wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER |
| CVE-2026-90329 | 8.8 HIGH | HID: synchronize input before cleaning up a failed probe |
| CVE-2026-93189 | 8.8 HIGH | HID: core: quiesce input in hid_hw_stop() to prevent use-after-free |
| CVE-2026-90240 | 8.8 HIGH | iommu/vt-d: Flush context cache with correct SID when tearing down aliases |
| CVE-2026-90357 | 8.8 HIGH | wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement |
| CVE-2026-90286 | 8.8 HIGH | drm/amdgpu/gfx6: Use PFP on the compute queues too |
| CVE-2026-93042 | 8.8 HIGH | dmaengine: dw-edma: Terminate all descriptors without callbacks |
| CVE-2026-90256 | 8.8 HIGH | Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind |
| CVE-2026-90380 | 8.8 HIGH | wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete |
| CVE-2026-90381 | 8.8 HIGH | wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx() |
| CVE-2026-90425 | 8.8 HIGH | iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID |
Showing top 20 of 600 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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Same vendor: Linux
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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 -
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bpf: Reject dev-bound-only programs on other devices -
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V. Comments for CVE-2026-92484
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