release v6.18.44-seanfarm31 #16

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pipeline-bot merged 1 commit from _promote/v6.18.44-seanfarm31 into main 2026-08-11 08:56:42 +00:00
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fix(kernel): rebase stable base to Linux 6.18.44
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Import the authenticated kernel.org linux-6.18.44 stable tarball and
reapply the complete effective seanfarm overlay from 6.18.42.

Upstream tarball SHA-256: 0f72d938f06828e82c90405174fe572287db7bfe089e2fc46572a99a7f240d43
Upstream stable commit: 1efe5d048a391de3ead2804b2e7f86376c356cc5
Upstream tree: 9853ab31251669994d0d57301d4090b04e2e9e2e
ZFS remains source-derived 2.4.2; no upstream path overlaps the effective
seanfarm overlay.

Picks up 14 CVEs across 6.18.43 and 6.18.44. The ones that apply to this
fleet (headless AMD EPYC cloud VMs running untrusted CI workloads):

  CVE-2026-68480  x86/bugs: Safe-RET robust against interrupt injection
                  (SRSO -- our nodes are AMD EPYC; speculative data leak)
  CVE-2026-68166  userfaultfd: prevent registration of special VMAs
                  (UFFDIO_COPY with attacker-chosen return addresses)
  CVE-2026-63978  net/handshake: drain pending requests at netns exit
  CVE-2026-63979  net/handshake: hand off pinned file ref to accept
  CVE-2026-64523  net/handshake: take a long-lived file ref at submit
  CVE-2026-68322  rds: NULL deref when IPv6 is disabled

Not applicable, hardware this fleet does not have: CVE-2026-64586
(brcmfmac wifi) and 7 drm CVEs (xe, i915, amdgpu, gpusvm).

Also picks up two non-CVE fixes that matter here: an mm/hugetlb swap-entry
corruption on fork() (this fleet leans on hugepages for mayastor) and an
mm/huge_memory use-after-free in __folio_split().

Overlay is 854 files: 472 under fs/zfs, 372 under include/zfs, both
seanfarm_defconfigs, CHANGELOG.md, 2 genl_magic_func headers, and 5 files
that modify upstream (fs/{Kconfig,Makefile}, drivers/block/{Kconfig,Makefile},
fs/iomap/iter.c). All 5 are byte-identical between v6.18.42 and v6.18.44
upstream, and none of the added paths exist upstream, so the overlay
transplants with zero conflicts.
pipeline-bot deleted branch _promote/v6.18.44-seanfarm31 2026-08-11 08:56:42 +00:00
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