Public bug reported:
Hello Ubuntu team,
Commit 6c17bc26fbc1c ("NFS: Fix a deadlock involving
nfs_release_folio()"), added in noble linux 6.8.0-117.117, adds a new
function nfs_wb_folio_reclaim(), but does not use it - I can't see usage
of this function on tag Ubuntu-6.8.0-130.130. Upstream commit and its
backport to 6.6
https://lore.kernel.org/all/[email protected]/
both use the symbol, which look like the correct thing to do.
This was found during manual review, unfortunately I don't have a
reproducer for this (testing it seems complex according to
https://lore.kernel.org/all/[email protected]/).
I hope my analysis is correct, and is helpful to you/
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2156548
Title:
CVE-2026-23053: "NFS: Fix a deadlock involving nfs_release_folio()"
backport on noble look incorrect
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