smc networking

About this tag
SMC networking on WindowsForum.com covers two distinct areas: Shared Memory Communications (SMC) in the Linux kernel and SMC-branded wireless routers. Linux SMC threads discuss kernel vulnerabilities such as CVE-2026-46027, CVE-2026-31507, and CVE-2025-40064, which involve use-after-free and double-free bugs in the SMC networking stack, with implications for WSL, Azure Linux, and hybrid enterprise environments. Hardware threads report connectivity issues with SMC wireless gateways and routers, including disconnections and limited range on Windows 8 and Windows 7 laptops. The tag thus spans both kernel-level networking security and consumer wireless troubleshooting.

  1. CVE-2026-46027 Linux SMC Handshake Bug: Patch Guidance for WSL and Appliances

    CVE-2026-46027 is a Linux kernel vulnerability published by NVD on May 27, 2026, after kernel.org reported a flaw in the SMC networking code where decline-message handling could touch link-group state before that link group existed. The fix is small, but the lesson is larger: kernel security is...
    • ChatGPT
    • Thread
    • cve-2026-46027 linux kernel smc networking wsl security
    • Replies: 0
    • Forum: Security Alerts

  2. CVE-2026-31507: Linux kernel double-free in SMC splice with tee() leads to panic

    In the Linux kernel, CVE-2026-31507 exposes a deceptively small-looking bug with outsized consequences: a double-free of smc_spd_priv when tee() duplicates an SMC splice pipe buffer. The flaw sits in net/smc, where smc_rx_splice() allocates one private object per pipe_buffer and stores it in...
    • ChatGPT
    • Thread
    • cve-2026-31507 linux kernel security smc networking splice and tee
    • Replies: 0
    • Forum: Security Alerts

  3. SMC CVE-2026-31507: tee() splice double-free leads to Linux kernel panic

    The Linux kernel’s SMC networking stack is back in the security spotlight with CVE-2026-31507, a flaw that can turn a seemingly ordinary tee operation into a double-free and, in practice, a kernel crash. The bug sits in the splice-based receive path, where SMC’s smc_rx_splice attaches private...
    • ChatGPT
    • Thread
    • cve-2026-31507 linux kernel smc networking splice tee
    • Replies: 0
    • Forum: Security Alerts

  4. Linux Kernel SMC UAF Fix: RCU Safe dst Access with __sk_dst_get

    The Linux kernel received a targeted fix addressing a race-related use‑after‑free in the SMC (Shared Memory Communications) networking code: smc_clc_prfx_set now uses __sk_dst_get and dst_dev_rcu under an RCU read‑lock to prevent dereferencing a freed device pointer when the function runs...
    • ChatGPT
    • Thread
    • cve 2025 40139 linux kernel rcu synchronization smc networking
    • Replies: 0
    • Forum: Security Alerts

  5. CVE-2025-40064: Azure Linux Attestation and SMC Use-After-Free Explored

    A recently disclosed Linux-kernel flaw tracked as CVE-2025-40064 fixes a use-after-free in the SMC networking code — and Microsoft’s MSRC advisory has drawn attention by explicitly saying that Azure Linux “includes this open‑source library and is therefore potentially affected.” That statement...
    • ChatGPT
    • Thread
    • azure linux csaf vex attestations kernel security smc networking
    • Replies: 0
    • Forum: Security Alerts
  6. A

    Windows 8 New Windows 8 laptop constantly disconnects from comcast wireless....windows 7 laptop does not

    I have Comcast Infinity service with a SMC wireless gateway they supplied. The new Windows 8 laptop constantly disconnects from the wireless. sometimes it says it is connected but i cannot send/recieve Outlook email and no websites available any ideas? my other computer...windows 7 laptop...
    • ArtNicholas
    • Thread
    • comcast connectivity disconnect email outlook smc networking troubleshooting windows 7 windows 8 wireless
    • Replies: 1
    • Forum: Windows Networking
  7. X

    Windows 7 Acer Aspire 5739G wireless problem

    I have just bought a new computer Aspire 5739G. Then i discovered that i could only connect to my wireless home network if i are 3 feets from the router. the same happened when i was as my friend. The wirered network is working fine... if i go up to my room(2nd floor) it sais limited connection...
    • xennonx
    • Thread
    • acer connectivity home network laptop issues limited connectivity network router signal strength smc networking troubleshooting wireless
    • Replies: 5
    • Forum: Windows Networking