CVE-2023-54032

CVE-2023-54032 affects the Linux kernel’s btrfs quota handling. The root cause is a race in deleting a quota root from the dirty_cowonly_roots list without acquiring trans_lock, which can race with concurrent list manipulation (e.g., add_root_to_dirty_list). This unsynchronized access may trigger...

CVE-2023-54032 btrfs: fix race when deleting quota root from the dirty cow roots list

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race when deleting quota root from the dirty cow roots list When disabling quotas we are deleting the quota root from the list fsinfo-dirtycowonlyroots without taking the lock that protects it, which is struct...

CVE-2023-54023 btrfs: fix race between balance and cancel/pause

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race between balance and cancel/pause Syzbot reported a panic that looks like this: assertion failed: fsinfo-exclusiveoperation == BTRFSEXCLOPBALANCEPAUSED, in fs/btrfs/ioctl.c:465 ------------ cut here ------------...

CVE-2023-54023 btrfs: fix race between balance and cancel/pause

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race between balance and cancel/pause Syzbot reported a panic that looks like this: assertion failed: fsinfo-exclusiveoperation == BTRFSEXCLOPBALANCEPAUSED, in fs/btrfs/ioctl.c:465 ------------ cut here ------------...

CVE-2023-54023

The CVE-2023-54023 entry concerns a Linux kernel bug in Btrfs where a race between balance and cancel/pause could trigger a kernel panic. The provided docs describe a fix that ensures proper cleanup of balance state when balance completes, even if a pause/cancel was requested, preventing the ASSE...

CVE-2023-54002 btrfs: fix assertion of exclop condition when starting balance

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix assertion of exclop condition when starting balance Balance as exclusive state is compatible with paused balance and device add, which makes some things more complicated. The assertion of valid states when starting fro...

CVE-2023-54002

CVE-2023-54002 (Linux kernel) concerns a btrfs exclop balance bug where the assertion of valid states for exclusive operations could fail when starting balance amid paused balance and device add; this can occur under race conditions with multiple threads. Connected documents outline two scenarios...

CVE-2025-68359 btrfs: fix double free of qgroup record after failure to add delayed ref head

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double free of qgroup record after failure to add delayed ref head In the previous code it was possible to incur into a double kfree scenario when calling adddelayedrefhead. This could happen if the record was reported...

CVE-2025-68359

CVE-2025-68359 concerns the Linux kernel/btrfs. The vulnerability arises from a double free of a qrecord when add_delayed_ref_head() returns an error after btrfs_qgroup_trace_extent_nolock() reports the record as existing. The fix reassigns ownership of the qrecord away from add_delayed_ref_head(...

CVE-2025-68358

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix racy bitfield write in btrfsclearspaceinfofull From the memory-barriers.txt document regarding memory barrier ordering guarantees: These guarantees do not apply to bitfields, because compilers often generate code to...

CVE-2025-68358 btrfs: fix racy bitfield write in btrfs_clear_space_info_full()

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix racy bitfield write in btrfsclearspaceinfofull From the memory-barriers.txt document regarding memory barrier ordering guarantees: These guarantees do not apply to bitfields, because compilers often generate code to...

CVE-2025-68358 btrfs: fix racy bitfield write in btrfs_clear_space_info_full()

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix racy bitfield write in btrfsclearspaceinfofull From the memory-barriers.txt document regarding memory barrier ordering guarantees: These guarantees do not apply to bitfields, because compilers often generate code to...

CVE-2025-68358

CVE-2025-68358 (Linux kernel, btrfs) : A race condition was fixed in btrfs_clear_space_info_full() that updated bitfield members (full, chunk_alloc, flush) without holding the space_info lock, risking corruption of adjacent fields due to non-atomic read-modify-write sequences on bitfields. The fi...

PT-2025-53132

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel related to the btrfs file system. Specifically, the issue involves the order of operations within the btrfs init new buffer function. The btrfs set head...

PT-2025-52989

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.4.0-rc6-btrfs-next-134+ Description The Linux kernel contains a flaw in the btrfs file system related to race conditions when deleting quota roots from the dirty cow roots list. Specifically, when disabling...

Linux kernel 安全漏洞

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 contention condition in the btrfs file system when deleting a quota root, which could lead to list...

PT-2025-52980

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw related to a race condition between the btrfs balance operation and cancel/pause requests. A reproducer involving running a balance and a cancel or pause...

Linux kernel 安全漏洞

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 Linux kernel that originates from incorrectly setting the header generation time in the btrfsinitnewbuffer function, which could lead to the...

Linux Distros Unpatched Vulnerability : CVE-2023-54121

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: fix incorrect splitting in btrfsdropextentmaprange In production we were seeing a variety of WARNON's in the extentmap code, specifically in...

Linux Distros Unpatched Vulnerability : CVE-2023-54002

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: fix assertion of exclop condition when starting balance Balance as exclusive state is compatible with paused balance and device add, which makes some...