CVE-2026-89704

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

Linux Distros Unpatched Vulnerability : CVE-2026-89704

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into since after the copy loop, then uses it to detect writeback...

CVE-2026-89704

A flaw was found in the Linux kernel's nfsd component. The nfsdcopyfilerange function incorrectly samples the writeback error cursor after the copy loop. This allows a concurrent write operation to advance the error cursor prematurely. As a result, the system may report that data has been...

AZL-100820 CVE-2026-89704 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

CVE-2026-89704

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

UBUNTU-CVE-2026-89704

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

EUVD-2026-76616

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

CVE-2026-89704

CVE-2026-89704 affects the nfsd (NFS server) component of the Linux kernel . The root cause is that _nfsd_copy_file_range() samples the writeback error cursor (dst->f_wb_err) after the copy loop rather than before it. Because the nfsd_file cache reuses a single struct file across requests on t...

CVE-2026-89704

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

CVE-2026-89704 nfsd: sample writeback error cursor before async COPY loop

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

CVE-2026-89704 nfsd: sample writeback error cursor before async COPY loop

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

PT-2026-90420

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsd copy file range samples dst-f wb err into "since" after the copy loop, then uses it to detect writeback errors via filemap check wb err once vfs fsync range returns...

CVE-2023-53537 f2fs: fix to avoid use-after-free for cached IPU bio

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid use-after-free for cached IPU bio xfstest generic/019 reports a bug: kernel BUG at mm/filemap.c:1619! RIP: 0010:folioendwriteback+0x8a/0x90 Call Trace: endpagewriteback+0x1c/0x60 f2fswriteendio+0x199/0x420...

UBUNTU-CVE-2022-50406

In the Linux kernel, the following vulnerability has been resolved: iomap: iomap: fix memory corruption when recording errors during writeback Every now and then I see this crash on arm64: Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8 Buffer I/O error on dev...

CVE-2022-50406 iomap: iomap: fix memory corruption when recording errors during writeback

In the Linux kernel, the following vulnerability has been resolved: iomap: iomap: fix memory corruption when recording errors during writeback Every now and then I see this crash on arm64: Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8 Buffer I/O error on dev...

PT-2025-8763

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A bug in the Linux kernel's btrfs filesystem can cause a crash when the cow file range function fails, leading to improper cleanup of folios. This issue is related to error handling in t...

Linux kernel security vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a lack of writeback flag waits, which can lead to an olio/page writeback start routine or a writeback end...

SUSE CVE-2024-27414

In the Linux kernel, the following vulnerability has been resolved: rtnetlink: fix error logic of IFLABRIDGEFLAGS writing back In the commit d73ef2d69c0d "rtnetlink: let rtnlbridgesetlink checks IFLABRIDGEMODE length", an adjustment was made to the old loop logic in the function rtnlbridgesetlink...

GSD-2022-1003320 NFS: Further fixes to the writeback error handling

NFS: Further fixes to the writeback error handling This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.46 by commit...

GSD-2022-1003024 NFS: Further fixes to the writeback error handling

NFS: Further fixes to the writeback error handling This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.17.14 by commit...