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wire 2026-05-15
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RSS Archive Reviews

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KERNEL PATCHES PTRACE AND SMC-D VULNERABILITIES OVERNIGHT

By RepoJournal · Filed · About Linux · Composed from the cited sources · methodology

The kernel shipped critical fixes for ptrace memory access logic and SMC-D network protocol flaws that could allow malicious peers to trigger DoS conditions.

Linus merged a foundational cleanup to ptrace's dumpability logic [1], removing unsafe assumptions about task memory images that have haunted the subsystem for years. The fix tightens access checks by separating concerns: dumpability now only applies when an MM context exists, preventing edge cases where ptrace was checking permissions on kernel threads that shouldn't be traced at all. This lands alongside a critical SMC-D fix [2] where slot 0 of the ISM device array could be exploited by a malicious peer sending a CHID-0 ACCEPT message against an empty slot, triggering a NULL pointer dereference. The networking stack also shipped a batch of fixes [4] addressing TCP request socket UAFs and ethtool NULL derefs that were breaking production deployments. HID layer received sanitation work [3] across multiple drivers, patching out-of-bounds reads and use-after-free conditions in device-specific handlers and core input validation. The DP83TC811 PHY driver got a much-needed abilities advertisement fix [5] so 100BaseT1 speeds are now properly reported to ethtool.

Action items

References

  1. [1] ptrace: slightly saner 'get_dumpable()' logic torvalds/linux ↗
  2. [2] net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot torvalds/linux ↗
  3. [3] Merge tag 'hid-for-linus-2026051401' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid torvalds/linux ↗
  4. [4] Merge tag 'net-7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net torvalds/linux ↗
  5. [5] net: phy: DP83TC811: add reading of abilities torvalds/linux ↗

$ ls linux/reviews/ # the step-back reads

the week in review Omarchy polkit PAM stack skipped system-auth the month in review Linux 7.3 rc cycle fixes cgroup kill, SMB corruption
Full archive → Weekly reviews →

Quick answers

What shipped in Linux on May 15, 2026?
The kernel shipped critical fixes for ptrace memory access logic and SMC-D network protocol flaws that could allow malicious peers to trigger DoS conditions. In total, 37 commits, 5 pull requests, and 1 releases landed.
What were the notable Linux updates?
ptrace: slightly saner 'get_dumpable()' logic, net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot, and Merge tag 'hid-for-linus-2026051401' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.
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$ log Linux --recent

drm-fixes backs out dma-buf debug, vfs closes pathwalk use-after-frees 29 shipped Netlink stops hashing the net pointer, stmmac clears a stuck RGMII interrupt 27 shipped Poly1305 carry fix lands, Omarchy locks down N1x laptops and idle fingerprint readers 23 shipped Omarchy copies agent logins over SSH, kernel queues 7.4 merges 106 shipped

$ log --all # elsewhere on the wire

Alignment & Post-training verl rejects conflicting vLLM engine_kwargs, open-instruct adds MILES OPD behind a Megatron learner Interpretability nnsight 0.8.0 cuts import time from 7.6s to 1.6s

$ ls showcases/

Safety Evals AI Red Teaming Agent Security Interpretability Alignment & Post-training

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