{"id":"DEBIAN-CVE-2023-53865","details":"In the Linux kernel, the following vulnerability has been resolved:  btrfs: fix warning when putting transaction with qgroups enabled after abort  If we have a transaction abort with qgroups enabled we get a warning triggered when doing the final put on the transaction, like this:    [552.6789] ------------[ cut here ]------------   [552.6815] WARNING: CPU: 4 PID: 81745 at fs/btrfs/transaction.c:144 btrfs_put_transaction+0x123/0x130 [btrfs]   [552.6817] Modules linked in: btrfs blake2b_generic xor (...)   [552.6819] CPU: 4 PID: 81745 Comm: btrfs-transacti Tainted: G        W          6.4.0-rc6-btrfs-next-134+ #1   [552.6819] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014   [552.6819] RIP: 0010:btrfs_put_transaction+0x123/0x130 [btrfs]   [552.6821] Code: bd a0 01 00 (...)   [552.6821] RSP: 0018:ffffa168c0527e28 EFLAGS: 00010286   [552.6821] RAX: ffff936042caed00 RBX: ffff93604a3eb448 RCX: 0000000000000000   [552.6821] RDX: ffff93606421b028 RSI: ffffffff92ff0878 RDI: ffff93606421b010   [552.6821] RBP: ffff93606421b000 R08: 0000000000000000 R09: ffffa168c0d07c20   [552.6821] R10: 0000000000000000 R11: ffff93608dc52950 R12: ffffa168c0527e70   [552.6821] R13: ffff93606421b000 R14: ffff93604a3eb420 R15: ffff93606421b028   [552.6821] FS:  0000000000000000(0000) GS:ffff93675fb00000(0000) knlGS:0000000000000000   [552.6821] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033   [552.6821] CR2: 0000558ad262b000 CR3: 000000014feda005 CR4: 0000000000370ee0   [552.6822] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000   [552.6822] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400   [552.6822] Call Trace:   [552.6822]  \u003cTASK\u003e   [552.6822]  ? __warn+0x80/0x130   [552.6822]  ? btrfs_put_transaction+0x123/0x130 [btrfs]   [552.6824]  ? report_bug+0x1f4/0x200   [552.6824]  ? handle_bug+0x42/0x70   [552.6824]  ? exc_invalid_op+0x14/0x70   [552.6824]  ? asm_exc_invalid_op+0x16/0x20   [552.6824]  ? btrfs_put_transaction+0x123/0x130 [btrfs]   [552.6826]  btrfs_cleanup_transaction+0xe7/0x5e0 [btrfs]   [552.6828]  ? _raw_spin_unlock_irqrestore+0x23/0x40   [552.6828]  ? try_to_wake_up+0x94/0x5e0   [552.6828]  ? __pfx_process_timeout+0x10/0x10   [552.6828]  transaction_kthread+0x103/0x1d0 [btrfs]   [552.6830]  ? __pfx_transaction_kthread+0x10/0x10 [btrfs]   [552.6832]  kthread+0xee/0x120   [552.6832]  ? __pfx_kthread+0x10/0x10   [552.6832]  ret_from_fork+0x29/0x50   [552.6832]  \u003c/TASK\u003e   [552.6832] ---[ end trace 0000000000000000 ]---  This corresponds to this line of code:    void btrfs_put_transaction(struct btrfs_transaction *transaction)   {       (...)           WARN_ON(!RB_EMPTY_ROOT(                           &transaction-\u003edelayed_refs.dirty_extent_root));       (...)   }  The warning happens because btrfs_qgroup_destroy_extent_records(), called in the transaction abort path, we free all entries from the rbtree \"dirty_extent_root\" with rbtree_postorder_for_each_entry_safe(), but we don't actually empty the rbtree - it's still pointing to nodes that were freed.  So set the rbtree's root node to NULL to avoid this warning (assign RB_ROOT).","modified":"2026-09-15T08:47:29.453274399Z","published":"2025-12-09T16:17:27.413Z","upstream":["CVE-2023-53865"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-53865"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.52-1"}]}],"versions":["6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53865.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.11-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53865.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.11-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53865.json"}}],"schema_version":"1.9.0"}