CVE-2026-53360-POC

CVE-2026-53360: KVM SEV-SNP PSC heap out-of-bounds Proof of concept for a heap out-of-bounds read and write in KVM's SEV-SNP Page State Change PSC handling. A malicious SEV-SNP guest makes the host kernel walk a PSC entry array off the end of its slab allocation. That leaks the layout of...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Add architecture-specific hugepteclear When running mm selftests and executing runvmtests.sh, the following error occurs: BUG: Bad page state in process uffd-unit-tests pfn:00000 page: refcount:0 mapcount:0...

SUSE CVE-2026-89841

In the Linux kernel, the following vulnerability has been resolved: f2fs: only redirty pinned folios in redirtyblocks redirtyblocks pins folios with readcachefolio and then walks the same range again with filemaplockfolio to redirty them and drop the references it took. Commit 5951fee46bef "f2fs:...

CVE-2026-89841

In the Linux kernel, the following vulnerability has been resolved: f2fs: only redirty pinned folios in redirtyblocks redirtyblocks pins folios with readcachefolio and then walks the same range again with filemaplockfolio to redirty them and drop the references it took. Commit 5951fee46bef "f2fs:...

DEBIAN-CVE-2026-89841

In the Linux kernel, the following vulnerability has been resolved: f2fs: only redirty pinned folios in redirtyblocks redirtyblocks pins folios with readcachefolio and then walks the same range again with filemaplockfolio to redirty them and drop the references it took. Commit 5951fee46bef "f2fs:...

CVE-2026-89841

CVE-2026-89841 affects the f2fs filesystem in the Linux kernel . The flaw resides in redirty_blocks(), where a do/while loop introduced by commit 5951fee46bef causes an extra iteration when read_cache_folio() fails before any folio is pinned. If readahead has already populated the failed folio in...

CVE-2026-89841 f2fs: only redirty pinned folios in redirty_blocks

In the Linux kernel, the following vulnerability has been resolved: f2fs: only redirty pinned folios in redirtyblocks redirtyblocks pins folios with readcachefolio and then walks the same range again with filemaplockfolio to redirty them and drop the references it took. Commit 5951fee46bef "f2fs:...

CVE-2026-89841 f2fs: only redirty pinned folios in redirty_blocks

In the Linux kernel, the following vulnerability has been resolved: f2fs: only redirty pinned folios in redirtyblocks redirtyblocks pins folios with readcachefolio and then walks the same range again with filemaplockfolio to redirty them and drop the references it took. Commit 5951fee46bef "f2fs:...

EUVD-2026-80441

In the Linux kernel, the following vulnerability has been resolved: f2fs: only redirty pinned folios in redirtyblocks redirtyblocks pins folios with readcachefolio and then walks the same range again with filemaplockfolio to redirty them and drop the references it took. Commit 5951fee46bef "f2fs:...

PT-2026-93482

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the f2fs file system within the redirty blocks function. The function pins folios using read cache folio and subsequently iterates through the range using filemap lock...

CVE-2026-89841: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: f2fs: only redirty pinned folios in redirtyblocks redirtyblocks pins folios with readcachefolio and then walks the same range again with filemaplockfolio to redirty them and drop the references it took. Commit 5951fee46bef "f2fs:...

Linux Distros Unpatched Vulnerability : CVE-2026-89841

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: f2fs: only redirty pinned folios in redirtyblocks redirtyblocks pins folios with...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Requires the use of a scratch area if GHCB v2+ is in use According to the GHCB specification, when using GHCB v2+, it is required that the software scratch area resides in the GHCB’s shared buffer. Note that features li...

CVE-2026-63938

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM Secure Encrypted Virtualization SEV feature. When processing Page State Change PSC requests, the system does not properly validate the PSC buffer against the effective size of the scratch area. This can occur if a guest...

CVE-2026-63939

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM with Secure Encrypted Virtualization SEV support. This vulnerability arises from an incorrect calculation of the maximum length for the in-Guest-Host Communication Block GHCB scratch area. When processing Page State Change PS...

CVE-2026-63937

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM with Secure Encrypted Virtualization SEV. This time-of-check to time-of-use TOCTOU vulnerability exists when KVM processes the guest-accessible Page State Change PSC buffer. A misbehaving guest could exploit this timing issue...

SUSE CVE-2026-63937

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Use READONCE when reading entries/indices from PSC buffer Use READONCE when reading entries/indices from the guest-accessible Page State Change buffer to defend against TOCTOU bugs. Don't bother with READONCE/WRITEONCE...

SUSE CVE-2026-63938

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Check PSC request indices against the actual size of the buffer When processing Page State Change PSC requests, validate the PSC buffer against the effective size of the scratch area, which could be less than the maximu...

Linux Distros Unpatched Vulnerability : CVE-2026-63937

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Use READONCE when reading entries/indices from PSC buffer Use READONCE when readin...

CVE-2026-63937

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Use READONCE when reading entries/indices from PSC buffer Use READONCE when reading entries/indices from the guest-accessible Page State Change buffer to defend against TOCTOU bugs. Don't bother with READONCE/WRITEONCE...