CVE-2026-90261

A flaw was found in the btrfs zoned filesystem component of the Linux kernel. During metadata-heavy operations, a specific writeback scenario can prevent the system from properly managing active block groups. This issue can lead to a transaction abortion, forcing the filesystem into a read-only...

Linux Distros Unpatched Vulnerability : CVE-2026-90261

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: zoned: flush active metadata block group at btreewritepages start btreewritepages writes the btree inode's dirty metadata in ascending logical address...

DEBIAN-CVE-2026-90266

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't force read-only on transient -EAGAIN from reloc merge On a zoned FS, btrfsdelayedrefsrsvrefill returns -EAGAIN whenever the over-committed metadata plus the zoneunusable bytes exceeds the usable size in a...

CVE-2026-90266

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't force read-only on transient -EAGAIN from reloc merge On a zoned FS, btrfsdelayedrefsrsvrefill returns -EAGAIN whenever the over-committed metadata plus the zoneunusable bytes exceeds the usable size in a...

AZL-102258 CVE-2026-90261 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: flush active metadata block group at btreewritepages start btreewritepages writes the btree inode's dirty metadata in ascending logical address order. On a zoned filesystem only one metadata and one system block gro...

DEBIAN-CVE-2026-90260

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't clobber the extent buffer when zeroing it out On a zoned filesystem a freed-but-still-dirty tree block is written out as zeros EXTENTBUFFERZONEDZEROOUT only to keep the zone write pointer advancing...

CVE-2026-90260

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't clobber the extent buffer when zeroing it out On a zoned filesystem a freed-but-still-dirty tree block is written out as zeros EXTENTBUFFERZONEDZEROOUT only to keep the zone write pointer advancing...

CVE-2026-90266

CVE-2026-90266 affects the btrfs zoned filesystem in the Linux kernel. When btrfs_delayed_refs_rsv_refill() returns a transient -EAGAIN (triggered when over-committed metadata plus zone_unusable bytes exceeds the usable size in a metadata block-group), the transaction is aborted during block-grou...

EUVD-2026-81859

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't force read-only on transient -EAGAIN from reloc merge On a zoned FS, btrfsdelayedrefsrsvrefill returns -EAGAIN whenever the over-committed metadata plus the zoneunusable bytes exceeds the usable size in a...

EUVD-2026-81853

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't clobber the extent buffer when zeroing it out On a zoned filesystem a freed-but-still-dirty tree block is written out as zeros EXTENTBUFFERZONEDZEROOUT only to keep the zone write pointer advancing...

CVE-2026-90260

CVE-2026-90260 is a btrfs zoned filesystem vulnerability in the Linux kernel . The root cause is that btree_csum_one_bio() memzeroed the extent buffer's own folios before submission to advance the zone write pointer, destroying in-memory data while it was still referenced. When btrfs_free_tree_bl...

CVE-2026-90260 btrfs: zoned: don't clobber the extent buffer when zeroing it out

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: don't clobber the extent buffer when zeroing it out On a zoned filesystem a freed-but-still-dirty tree block is written out as zeros EXTENTBUFFERZONEDZEROOUT only to keep the zone write pointer advancing...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: In the case of zoned filesystems, there’s a memory leak that occurs after finding a block group containing super blocks. In the excludesuperstripes function, if we encounter a block group that contains super blocks, and we...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Zoned – Initialize the device’s zone info for seeding When performing seeding on a zoned filesystem, it is necessary to initialize the btrfszoneddeviceinfo structure of each zoned device. Otherwise, mounting the filesystem...

SUSE CVE-2026-74319

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: fix deadlock waiting for ticket during data relocation When performing data relocation on a zoned filesystem, BTRFS can deadlock in handlereservetickets. The relocation process is waiting on a space reservation tick...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: Zoned: Fixed a deadlock issue where the process was waiting for a space reservation ticket during data relocation. When performing data relocation on a zoned filesystem, BTRFS can enter a deadlock state in the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: Zoned: Fixed a deadlock between metadata writeback and transaction commit. When writing out metadata extent buffers in a zoned filesystem, btreewritepages holds fsinfo-zonedmetaiolock throughout the entire writeback loop,...

CVE-2026-74572

A flaw was found in the Linux kernel's btrfs zoned filesystem. A local user could trigger a deadlock when metadata writeback and transaction commit operations occur simultaneously. This deadlock causes the system to hang, leading to a Denial of Service DoS. Mitigation Mitigation for this issue is...

AZL-96141 CVE-2026-74572 affecting package kernel for versions less than 6.6.152.1-1

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: fix deadlock between metadata writeback and transaction commit When writing out metadata extent buffers in a zoned filesystem, btreewritepages holds fsinfo-zonedmetaiolock across the whole writeback loop, including...

CVE-2026-74319

In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: fix deadlock waiting for ticket during data relocation When performing data relocation on a zoned filesystem, BTRFS can deadlock in handlereservetickets. The relocation process is waiting on a space reservation tick...