wsl and containers

About this tag
The wsl and containers tag covers Linux kernel vulnerabilities that affect Windows estates through WSL, containers, developer workstations, and cloud workloads. Topics include CVEs in GNU nano, vsock, MPTCP, crypto APIs, BPF, and memory allocators. These flaws are not Windows-native but become relevant as Linux kernels run inside WSL, containers, build agents, and virtual machines. The recurring theme is that modern Windows shops must inventory and patch Linux components, especially when vulnerabilities involve obscure subsystems like BPF or kernel crypto. The tag emphasizes practical patch guidance and the need to treat Linux kernel security as part of Windows infrastructure management.

  1. CVE-2026-6843: GNU nano Format String DoS and Why Windows Shops Should Patch

    Microsoft’s Security Response Center is tracking CVE-2026-6843, a medium-severity GNU nano vulnerability disclosed in April 2026 in which a local attacker can crash the editor by luring it into displaying a specially named directory containing printf-style format specifiers. The bug is not a...
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    • cve 2026-6843 gnu nano security updates wsl and containers
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  2. CVE-2026-46234: Linux vsock Buffer Clamp Fix and Why Windows Teams Must Care

    CVE-2026-46234 is a newly published Linux kernel vulnerability, received by NVD from kernel.org on May 28, 2026, that fixes a vsock buffer-size clamping bug where a misordered minimum and maximum check could let a socket buffer exceed its configured maximum. It is not, at least from the public...
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    • linux kernel virtual sockets vsock vulnerability management wsl and containers
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  3. CVE-2026-46170 Linux MPTCP Bug: Unenriched Kernel Risk for Windows-Orgs

    CVE-2026-46170 is a newly published Linux kernel vulnerability from kernel.org, entered into the NVD on May 28, 2026, involving Multipath TCP address retransmission cleanup logic that can mishandle a final socket reference during an ADD_ADDR timer callback. The bug is not a flashy...
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    • cve triage linux kernel mptcp vulnerability wsl and containers
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  4. CVE-2026-46137: Linux MPTCP Race—Windows Teams Must Inventory WSL & Appliances

    CVE-2026-46137 was published by NVD on May 28, 2026, for a Linux kernel Multipath TCP path-manager race in the ADD_ADDR retransmission timer, fixed upstream by taking the socket lock in softirq context and retrying shortly when user context owns the socket. The terse advisory makes it look like...
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    • cve 2026 46137 linux kernel security multipath tcp wsl and containers
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  5. CVE-2026-46033 Linux Crypto Flaw: AF_ALG OOB Risk and Patch Guidance

    CVE-2026-46033 is a Linux kernel cryptographic API vulnerability, published by NVD on May 27, 2026, in which malformed authencesn instances can inherit an invalid one-to-three-byte authentication tag and let AF_ALG reach an out-of-bounds access path. The bug is not a Windows flaw, but it matters...
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    • af_alg crypto api linux kernel wsl and containers
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  6. CVE-2026-45839: Negative BPF CO-RE Index Crashes Kernels With CAP_BPF

    Linux kernel maintainers disclosed CVE-2026-45839 on May 27, 2026, after fixing a BPF CO-RE parsing bug that lets a privileged user with CAP_BPF crash kernels built with vmlinux BTF support. The flaw is not a Windows vulnerability, but it matters to WindowsForum readers because Linux is now a...
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    • cve patching ebpf co-re linux kernel security wsl and containers
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  7. CVE-2026-45932: Linux BPF Detach Permission Bypass and Why Windows Shops Should Care

    On May 27, 2026, NVD published CVE-2026-45932, a Linux kernel vulnerability in BPF detach handling that allowed unprivileged users to detach tcx or netkit programs when no program file descriptor was supplied. The bug is narrow, local, and not yet scored by NVD, but it lands in one of the...
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    • ebpf bpf linux kernel security patch management wsl and containers
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  8. CVE-2026-43303 Linux Kernel Use-After-Free: Patch Guidance for WSL, Containers

    CVE-2026-43303 is a Linux kernel use-after-free vulnerability published by NVD on May 8, 2026, sourced from kernel.org, affecting kernel versions from 5.18 through pre-fixed stable releases and rated High by kernel.org under CVSS 3.1. The bug sits in the memory allocator, not in a flashy network...
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    • cve-2026-43303 linux kernel use-after-free wsl and containers
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  9. CVE-2026-31729 USB-C Kernel Flaw: Why Windows Teams Must Track Linux Kernels

    CVE-2026-31729 is a high-severity Linux kernel flaw published on May 1, 2026, in the USB Type-C UCSI driver, where a bogus connector number from hardware can trigger an out-of-bounds array access before fixed kernel builds reject it. For WindowsForum readers, the point is not that Windows...
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    • cve 2026 31729 linux kernel security usb-c ucsi wsl and containers
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  10. CVE-2026-43474: Linux Kernel Uninitialized flags_valid—Why Windows Teams Should Patch

    CVE-2026-43474 is a Linux kernel filesystem bug, published in early May 2026 and tracked by Microsoft’s Security Update Guide, that fixes an uninitialized flags_valid field before vfs_fileattr_get() calls into filesystem-specific file attribute handlers such as FUSE on affected modern kernels...
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    • cve 2026 43474 filesystem bug linux kernel security wsl and containers
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  11. CVE-2026-43010: Kernel eBPF kprobe.multi Sleepable Context Check Fix

    CVE-2026-43010 is a Linux kernel BPF vulnerability published by NVD on May 1, 2026, affecting kprobe.multi attachment handling where sleepable BPF programs could be accepted in atomic/RCU context and trigger a kernel availability failure. The bug is not a glamorous remote code execution...
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    • cve 2026 43010 ebpf security linux kernel bpf wsl and containers
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  12. CVE-2026-43101: Linux IPv6 IOAM NULL Dereference and What Windows Teams Must Do

    CVE-2026-43101 is a newly published Linux kernel vulnerability, disclosed on May 6, 2026, in the IPv6 IOAM tracing path where __ioam6_fill_trace_data() could hit potential NULL dereferences before stable kernel fixes added safer checks and reads. It is not a blockbuster remote-code-execution...
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    • ipv6 ioam linux kernel security vulnerability management wsl and containers
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  13. CVE-2026-31639 Linux rxrpc Key Reference Leak: Why Windows Admins Should Patch

    CVE-2026-31639 is a small-looking Linux kernel fix with the kind of operational footprint that administrators should not ignore: an rxrpc key reference count leak tied to client call teardown. The issue, published on April 24, 2026 and still awaiting full NVD enrichment, centers on a missing...
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    • cve 2026 31639 kernel patching linux kernel wsl and containers
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  14. CVE-2026-31570 Linux CAN Gateway CRC8 OOB Read/Write: Patch Guide

    CVE-2026-31570: Linux Kernel CAN Gateway Heap Out-of-Bounds Access in cgw_csum_crc8_rel() Short version: CVE-2026-31570 is a Linux kernel vulnerability in the SocketCAN CAN gateway code, specifically in the CRC8 checksum handling path in net/can/gw.c. The bug can cause out-of-bounds heap reads...
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    • linux kernel security patching socketcan wsl and containers
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