Upstream information
Description
In the Linux kernel, the following vulnerability has been resolved:block, bfq: fix possible uaf for 'bfqq->bic'
Our test report a uaf for 'bfqq->bic' in 5.10:
==================================================================
BUG: KASAN: use-after-free in bfq_select_queue+0x378/0xa30
CPU: 6 PID: 2318352 Comm: fsstress Kdump: loaded Not tainted 5.10.0-60.18.0.50.h602.kasan.eulerosv2r11.x86_64 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58-20220320_160524-szxrtosci10000 04/01/2014
Call Trace:
bfq_select_queue+0x378/0xa30
bfq_dispatch_request+0xe8/0x130
blk_mq_do_dispatch_sched+0x62/0xb0
__blk_mq_sched_dispatch_requests+0x215/0x2a0
blk_mq_sched_dispatch_requests+0x8f/0xd0
__blk_mq_run_hw_queue+0x98/0x180
__blk_mq_delay_run_hw_queue+0x22b/0x240
blk_mq_run_hw_queue+0xe3/0x190
blk_mq_sched_insert_requests+0x107/0x200
blk_mq_flush_plug_list+0x26e/0x3c0
blk_finish_plug+0x63/0x90
__iomap_dio_rw+0x7b5/0x910
iomap_dio_rw+0x36/0x80
ext4_dio_read_iter+0x146/0x190 [ext4]
ext4_file_read_iter+0x1e2/0x230 [ext4]
new_sync_read+0x29f/0x400
vfs_read+0x24e/0x2d0
ksys_read+0xd5/0x1b0
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x61/0xc6
Commit 3bc5e683c67d ("bfq: Split shared queues on move between cgroups")
changes that move process to a new cgroup will allocate a new bfqq to
use, however, the old bfqq and new bfqq can point to the same bic:
1) Initial state, two process with io in the same cgroup.
Process 1 Process 2
(BIC1) (BIC2)
| ^ | ^
| | | |
V | V |
bfqq1 bfqq2
2) bfqq1 is merged to bfqq2.
Process 1 Process 2
(BIC1) (BIC2)
| |
\-------------\|
V
bfqq1 bfqq2(coop)
3) Process 1 exit, then issue new io(denoce IOA) from Process 2.
(BIC2)
| ^
| |
V |
bfqq2(coop)
4) Before IOA is completed, move Process 2 to another cgroup and issue io.
Process 2
(BIC2)
^
|\--------------\
| V
bfqq2 bfqq3
Now that BIC2 points to bfqq3, while bfqq2 and bfqq3 both point to BIC2.
If all the requests are completed, and Process 2 exit, BIC2 will be
freed while there is no guarantee that bfqq2 will be freed before BIC2.
Fix the problem by clearing bfqq->bic while bfqq is detached from bic.
SUSE information
Overall state of this security issue: New
This issue is currently rated as having not set severity.
Note from the SUSE Security Team on the kernel-default package
SUSE will no longer fix all CVEs in the Linux Kernel anymore, but declare some bug classes as won't fix. Please refer to TID 21496 for more details. No SUSE Bugzilla entries cross referenced. No SUSE Security Announcements cross referenced.Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
Product(s) | Source package | State |
---|---|---|
Products under general support and receiving all security fixes. | ||
SUSE Linux Enterprise Desktop 15 SP6 | kernel-default | Analysis |
SUSE Linux Enterprise Desktop 15 SP6 | kernel-source | Analysis |
SUSE Linux Enterprise Desktop 15 SP7 | kernel-default | Analysis |
SUSE Linux Enterprise Desktop 15 SP7 | kernel-source | Analysis |
SUSE Linux Enterprise High Availability Extension 15 SP7 | kernel-default | Analysis |
SUSE Linux Enterprise High Availability Extension 15 SP7 | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP6 | kernel-default | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP6 | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP6 | kernel-source-azure | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP7 | kernel-default | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP7 | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP7 | kernel-source-azure | Analysis |
SUSE Linux Enterprise Live Patching 15 SP6 | kernel-default | Analysis |
SUSE Linux Enterprise Live Patching 15 SP6 | kernel-source | Analysis |
SUSE Linux Enterprise Live Patching 15 SP7 | kernel-default | Analysis |
SUSE Linux Enterprise Live Patching 15 SP7 | kernel-source | Analysis |
SUSE Linux Enterprise Micro 5.1 | kernel-default | Analysis |
SUSE Linux Enterprise Micro 5.1 | kernel-rt | Analysis |
SUSE Linux Enterprise Micro 5.1 | kernel-source | Analysis |
SUSE Linux Enterprise Micro 5.1 | kernel-source-rt | Analysis |
SUSE Linux Enterprise Micro 5.2 | kernel-default | Analysis |
SUSE Linux Enterprise Micro 5.2 | kernel-rt | Analysis |
SUSE Linux Enterprise Micro 5.2 | kernel-source | Analysis |
SUSE Linux Enterprise Micro 5.2 | kernel-source-rt | Analysis |
SUSE Linux Enterprise Micro 5.3 | kernel-default | Analysis |
SUSE Linux Enterprise Micro 5.3 | kernel-rt | Analysis |
SUSE Linux Enterprise Micro 5.3 | kernel-source | Analysis |
SUSE Linux Enterprise Micro 5.3 | kernel-source-rt | Analysis |
SUSE Linux Enterprise Micro 5.4 | kernel-default | Analysis |
SUSE Linux Enterprise Micro 5.4 | kernel-rt | Analysis |
SUSE Linux Enterprise Micro 5.4 | kernel-source | Analysis |
SUSE Linux Enterprise Micro 5.4 | kernel-source-rt | Analysis |
SUSE Linux Enterprise Micro 5.5 | kernel-default | Analysis |
SUSE Linux Enterprise Micro 5.5 | kernel-source | Analysis |
SUSE Linux Enterprise Micro 5.5 | kernel-source-rt | Analysis |
SUSE Linux Enterprise Module for Basesystem 15 SP6 | kernel-default | Analysis |
SUSE Linux Enterprise Module for Basesystem 15 SP6 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Basesystem 15 SP7 | kernel-default | Analysis |
SUSE Linux Enterprise Module for Basesystem 15 SP7 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Development Tools 15 SP6 | kernel-default | Analysis |
SUSE Linux Enterprise Module for Development Tools 15 SP6 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Development Tools 15 SP7 | kernel-default | Analysis |
SUSE Linux Enterprise Module for Development Tools 15 SP7 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Legacy 15 SP6 | kernel-default | Analysis |
SUSE Linux Enterprise Module for Legacy 15 SP6 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Legacy 15 SP7 | kernel-default | Analysis |
SUSE Linux Enterprise Module for Legacy 15 SP7 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Public Cloud 15 SP6 | kernel-source-azure | Analysis |
SUSE Linux Enterprise Module for Public Cloud 15 SP7 | kernel-source-azure | Analysis |
SUSE Linux Enterprise Real Time 15 SP6 | kernel-source-rt | Analysis |
SUSE Linux Enterprise Real Time 15 SP7 | kernel-source-rt | Analysis |
SUSE Linux Enterprise Server 15 SP6 | kernel-default | Analysis |
SUSE Linux Enterprise Server 15 SP6 | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP6 | kernel-source-azure | Analysis |
SUSE Linux Enterprise Server 15 SP7 | kernel-default | Analysis |
SUSE Linux Enterprise Server 15 SP7 | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP7 | kernel-source-azure | Analysis |
SUSE Linux Enterprise Server 16.0 | kernel-default | Analysis |
SUSE Linux Enterprise Server 16.0 | kernel-source | Analysis |
SUSE Linux Enterprise Server 16.0 | kernel-source-azure | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP6 | kernel-default | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP6 | kernel-source | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP6 | kernel-source-azure | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP7 | kernel-default | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP7 | kernel-source | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP7 | kernel-source-azure | Analysis |
SUSE Linux Enterprise Server for SAP Applications 16.0 | kernel-source | Analysis |
SUSE Linux Enterprise Server for SAP Applications 16.0 | kernel-source-azure | Analysis |
SUSE Linux Enterprise Workstation Extension 15 SP6 | kernel-default | Analysis |
SUSE Linux Enterprise Workstation Extension 15 SP6 | kernel-source | Analysis |
SUSE Linux Enterprise Workstation Extension 15 SP7 | kernel-default | Analysis |
SUSE Linux Enterprise Workstation Extension 15 SP7 | kernel-source | Analysis |
SUSE Linux Micro 6.0 | kernel-default | Analysis |
SUSE Linux Micro 6.0 | kernel-source | Analysis |
SUSE Linux Micro 6.0 | kernel-source-rt | Analysis |
SUSE Linux Micro 6.1 | kernel-default | Analysis |
SUSE Linux Micro 6.1 | kernel-source | Analysis |
SUSE Linux Micro 6.1 | kernel-source-rt | Analysis |
SUSE Linux Micro 6.2 | kernel-source | Analysis |
SUSE Real Time Module 15 SP6 | kernel-source-rt | Analysis |
SUSE Real Time Module 15 SP7 | kernel-source-rt | Analysis |
openSUSE Leap 15.6 | kernel-default | Analysis |
openSUSE Leap 15.6 | kernel-source | Analysis |
openSUSE Leap 15.6 | kernel-source-azure | Analysis |
openSUSE Leap 15.6 | kernel-source-rt | Analysis |
Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
SUSE Linux Enterprise High Performance Computing 15 SP3 | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP5 | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-default | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Live Patching 12 SP5 | kernel-default | Analysis |
SUSE Linux Enterprise Live Patching 12 SP5 | kernel-source | Analysis |
SUSE Linux Enterprise Live Patching 15 SP3 | kernel-default | Analysis |
SUSE Linux Enterprise Live Patching 15 SP3 | kernel-source | Analysis |
SUSE Linux Enterprise Live Patching 15 SP4 | kernel-default | Analysis |
SUSE Linux Enterprise Live Patching 15 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Live Patching 15 SP5 | kernel-default | Analysis |
SUSE Linux Enterprise Live Patching 15 SP5 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Basesystem 15 SP3 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Basesystem 15 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Basesystem 15 SP5 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Development Tools 15 SP3 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Development Tools 15 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Development Tools 15 SP5 | kernel-source | Analysis |
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-default | Analysis |
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-source | Analysis |
SUSE Linux Enterprise Server 12 SP5 | kernel-source | Analysis |
SUSE Linux Enterprise Server 12 SP5-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise Server 12 SP5-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | kernel-default | Analysis |
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP3 | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP3-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise Server 15 SP3-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP4-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise Server 15 SP4-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP5 | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP5-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise Server 15 SP5-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | kernel-source | Analysis |
SUSE Manager Proxy 4.3 | kernel-source | Analysis |
SUSE Manager Proxy LTS 4.3 | kernel-default | Analysis |
SUSE Manager Proxy LTS 4.3 | kernel-source | Analysis |
SUSE Manager Retail Branch Server 4.3 | kernel-source | Analysis |
SUSE Manager Retail Branch Server LTS 4.3 | kernel-default | Analysis |
SUSE Manager Retail Branch Server LTS 4.3 | kernel-source | Analysis |
SUSE Manager Server 4.3 | kernel-source | Analysis |
SUSE Manager Server LTS 4.3 | kernel-default | Analysis |
SUSE Manager Server LTS 4.3 | kernel-source | Analysis |
Products past their end of life and not receiving proactive updates anymore. | ||
SUSE CaaS Platform 4.0 | kernel-source | Analysis |
SUSE Enterprise Storage 6 | kernel-source | Analysis |
SUSE Enterprise Storage 7 | kernel-source | Analysis |
SUSE Enterprise Storage 7.1 | kernel-source | Analysis |
SUSE Linux Enterprise Desktop 11 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Desktop 12 SP2 | kernel-source | Analysis |
SUSE Linux Enterprise Desktop 12 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Desktop 15 | kernel-source | Analysis |
SUSE Linux Enterprise Desktop 15 SP1 | kernel-source | Analysis |
SUSE Linux Enterprise Desktop 15 SP2 | kernel-source | Analysis |
SUSE Linux Enterprise Desktop 15 SP3 | kernel-source | Analysis |
SUSE Linux Enterprise Desktop 15 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Desktop 15 SP5 | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP1 | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP2 | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15-ESPOS | kernel-source | Analysis |
SUSE Linux Enterprise High Performance Computing 15-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Micro 5.0 | kernel-default | Analysis |
SUSE Linux Enterprise Module for Basesystem 15 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Basesystem 15 SP1 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Basesystem 15 SP2 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Development Tools 15 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Development Tools 15 SP1 | kernel-source | Analysis |
SUSE Linux Enterprise Module for Development Tools 15 SP2 | kernel-source | Analysis |
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | kernel-source | Analysis |
SUSE Linux Enterprise Real Time 15 SP2 | kernel-source | Analysis |
SUSE Linux Enterprise Real Time 15 SP3 | kernel-source | Analysis |
SUSE Linux Enterprise Real Time 15 SP3 | kernel-source-rt | Analysis |
SUSE Linux Enterprise Real Time 15 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Real Time 15 SP4 | kernel-source-rt | Analysis |
SUSE Linux Enterprise Real Time 15 SP5 | kernel-source-rt | Analysis |
SUSE Linux Enterprise Server 11 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Server 11 SP4 LTSS | kernel-default | Analysis |
SUSE Linux Enterprise Server 11 SP4 LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Server 11 SP4-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Server 12 SP2 | kernel-source | Analysis |
SUSE Linux Enterprise Server 12 SP2-BCL | kernel-source | Analysis |
SUSE Linux Enterprise Server 12 SP2-ESPOS | kernel-source | Analysis |
SUSE Linux Enterprise Server 12 SP2-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise Server 12 SP2-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Server 12 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Server 12 SP4-ESPOS | kernel-source | Analysis |
SUSE Linux Enterprise Server 12 SP4-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise Server 12 SP4-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP1 | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP1-BCL | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP1-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise Server 15 SP1-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP2 | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP2-BCL | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP2-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise Server 15 SP2-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Server 15 SP3-BCL | kernel-source | Analysis |
SUSE Linux Enterprise Server 15-LTSS | kernel-default | Analysis |
SUSE Linux Enterprise Server 15-LTSS | kernel-source | Analysis |
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | kernel-source | Analysis |
SUSE Linux Enterprise Server for SAP Applications 12 SP2 | kernel-source | Analysis |
SUSE Linux Enterprise Server for SAP Applications 12 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 | kernel-source | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP1 | kernel-source | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP2 | kernel-source | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP3 | kernel-default | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP3 | kernel-source | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP4 | kernel-default | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP4 | kernel-source | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP5 | kernel-default | Analysis |
SUSE Linux Enterprise Server for SAP Applications 15 SP5 | kernel-source | Analysis |
SUSE Manager Proxy 4.0 | kernel-source | Analysis |
SUSE Manager Proxy 4.1 | kernel-source | Analysis |
SUSE Manager Proxy 4.2 | kernel-source | Analysis |
SUSE Manager Retail Branch Server 4.0 | kernel-source | Analysis |
SUSE Manager Retail Branch Server 4.1 | kernel-source | Analysis |
SUSE Manager Retail Branch Server 4.2 | kernel-source | Analysis |
SUSE Manager Server 4.0 | kernel-source | Analysis |
SUSE Manager Server 4.1 | kernel-source | Analysis |
SUSE Manager Server 4.2 | kernel-source | Analysis |
SUSE OpenStack Cloud 7 | kernel-source | Analysis |
SUSE OpenStack Cloud 9 | kernel-source | Analysis |
SUSE OpenStack Cloud Crowbar 9 | kernel-source | Analysis |
SUSE Real Time Module 15 SP3 | kernel-source-rt | Analysis |
SUSE Real Time Module 15 SP4 | kernel-source-rt | Analysis |
SUSE Real Time Module 15 SP5 | kernel-source-rt | Analysis |
openSUSE Leap 15.3 | kernel-source | Analysis |
openSUSE Leap 15.3 | kernel-source-rt | Analysis |
openSUSE Leap 15.4 | kernel-source | Analysis |
openSUSE Leap 15.4 | kernel-source-rt | Analysis |
openSUSE Leap 15.5 | kernel-source | Analysis |
openSUSE Leap 15.5 | kernel-source-rt | Analysis |
SUSE Timeline for this CVE
CVE page created: Sat Oct 4 20:00:11 2025CVE page last modified: Sat Oct 4 22:04:08 2025