CVE-2026-31542— x86/platform/uv: Handle deconfigured sockets
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I. Basic Information for CVE-2026-31542
Vulnerability Information
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Vulnerability Title
x86/platform/uv: Handle deconfigured sockets
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: x86/platform/uv: Handle deconfigured sockets When a socket is deconfigured, it's mapped to SOCK_EMPTY (0xffff). This causes a panic while allocating UV hub info structures. Fix this by using NUMA_NO_NODE, allowing UV hub info structures to be allocated on valid nodes.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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，该漏洞源于处理未配置的套接字时映射到SOCK_EMPTY，可能导致分配UV hub信息结构时内核崩溃。
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-2026-31542
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Same Patch Batch · Linux · 2026-04-24 · 138 CVEs total
| CVE-2026-31609 | 9.8 CRITICAL | smb: client: avoid double-free in smbd_free_send_io() after smbd_send_batch_flush() |
| CVE-2026-31657 | 9.8 CRITICAL | batman-adv: hold claim backbone gateways by reference |
| CVE-2026-31633 | 9.8 CRITICAL | rxrpc: Fix integer overflow in rxgk_verify_response() |
| CVE-2026-31608 | 9.8 CRITICAL | smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list |
| CVE-2026-31669 | 9.8 CRITICAL | mptcp: fix slab-use-after-free in __inet_lookup_established |
| CVE-2026-31668 | 9.8 CRITICAL | seg6: separate dst_cache for input and output paths in seg6 lwtunnel |
| CVE-2026-31536 | 9.8 CRITICAL | smb: server: let send_done handle a completion without IB_SEND_SIGNALED |
| CVE-2026-31659 | 9.8 CRITICAL | batman-adv: reject oversized global TT response buffers |
| CVE-2026-31649 | 9.8 CRITICAL | net: stmmac: fix integer underflow in chain mode |
| CVE-2026-31607 | 9.8 CRITICAL | usbip: validate number_of_packets in usbip_pack_ret_submit() |
| CVE-2026-31637 | 9.8 CRITICAL | rxrpc: reject undecryptable rxkad response tickets |
| CVE-2026-31589 | 9.8 CRITICAL | mm: call ->free_folio() directly in folio_unmap_invalidate() |
| CVE-2026-31636 | 9.1 CRITICAL | rxrpc: fix RESPONSE authenticator parser OOB read |
| CVE-2026-31570 | 8.8 HIGH | can: gw: fix OOB heap access in cgw_csum_crc8_rel() |
| CVE-2026-31558 | 8.8 HIGH | LoongArch: KVM: Make kvm_get_vcpu_by_cpuid() more robust |
| CVE-2026-31588 | 8.8 HIGH | KVM: x86: Use scratch field in MMIO fragment to hold small write values |
| CVE-2026-31553 | 8.8 HIGH | KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc() |
| CVE-2026-31629 | 8.8 HIGH | nfc: llcp: add missing return after LLCP_CLOSED checks |
| CVE-2026-31622 | 8.8 HIGH | NFC: digital: Bounds check NFC-A cascade depth in SDD response handler |
| CVE-2026-31611 | 8.6 HIGH | ksmbd: require 3 sub-authorities before reading sub_auth[2] |
Showing top 20 of 138 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2026-31542
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