CVE-2024-56641
published 2024-12-27CVE-2024-56641: In the Linux kernel, the following vulnerability has been resolved: net/smc: initialize close_work early to avoid warning We encountered a warning that…
PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.51%
40.7th percentile
In the Linux kernel, the following vulnerability has been resolved:
net/smc: initialize close_work early to avoid warning
We encountered a warning that close_work was canceled before
initialization.
WARNING: CPU: 7 PID: 111103 at kernel/workqueue.c:3047 __flush_work+0x19e/0x1b0
Workqueue: events smc_lgr_terminate_work [smc]
RIP: 0010:__flush_work+0x19e/0x1b0
Call Trace:
? __wake_up_common+0x7a/0x190
? work_busy+0x80/0x80
__cancel_work_timer+0xe3/0x160
smc_close_cancel_work+0x1a/0x70 [smc]
smc_close_active_abort+0x207/0x360 [smc]
__smc_lgr_terminate.part.38+0xc8/0x180 [smc]
process_one_work+0x19e/0x340
worker_thread+0x30/0x370
? process_one_work+0x340/0x340
kthread+0x117/0x130
? __kthread_cancel_work+0x50/0x50
ret_from_fork+0x22/0x30
This is because when smc_close_cancel_work is triggered, e.g. the RDMA
driver is rmmod and the LGR is terminated, the conn->close_work is
flushed before initialization, resulting in WARN_ON(!work->func).
__smc_lgr_terminate | smc_connect_{rdma|ism}
| smc_conn_create
| \- smc_lgr_register_conn
for conn in lgr->conns_all |
\- smc_conn_kill |
\- smc_close_active_abort |
\- smc_close_cancel_work |
\- cancel_work_sync |
\- __flush_work |
(close_work) |
| smc_close_init
| \- INIT_WORK(&close_work)
So fix this by initializing close_work before establishing the
connection.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.12.5-1 (forky) | linux 6.12.5-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= 46c28dbd4c23c3f7fa37f5ea48772af79c9cc40e < f0c37002210aaede10dae849d1a78efc2243add2 | f0c37002210aaede10dae849d1a78efc2243add2 |
| linux | linux | >= 46c28dbd4c23c3f7fa37f5ea48772af79c9cc40e < 6638e52dcfafaf1b9cbc34544f0c832db0069ea1 | 6638e52dcfafaf1b9cbc34544f0c832db0069ea1 |
| linux | linux | >= 46c28dbd4c23c3f7fa37f5ea48772af79c9cc40e < 0541db8ee32c09463a72d0987382b3a3336b0043 | 0541db8ee32c09463a72d0987382b3a3336b0043 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.12.5-1 | 6.12.5-1 |
| linux | linux_kernel | >= 0 < 6.12.5-1 | 6.12.5-1 |
| linux | linux_kernel | >= 0 < 6.8.0-58.60 | 6.8.0-58.60 |
| linux | linux_kernel | >= 4.12 < 6.6.66 | 6.6.66 |
| linux | linux_kernel | >= 6.7 < 6.12.5 | 6.12.5 |
| msrc | cbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.200.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.202.1-1_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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CVE-2024-56641: In the Linux kernel, the following vulnerability has been resolved: net/smc: initialize close_work early to avoid warning We encountered a warning tha
osv·2024-12-27·CVSS 5.5
CVE-2024-56641 [MEDIUM] CVE-2024-56641: In the Linux kernel, the following vulnerability has been resolved: net/smc: initialize close_work early to avoid warning We encountered a warning tha
In the Linux kernel, the following vulnerability has been resolved: net/smc: initialize close_work early to avoid warning We encountered a warning that close_work was canceled before initialization. WARNING: CPU: 7 PID: 111103 at kernel/workqueue.c:3047 __flush_work+0x19e/0x1b0 Workqueue: events smc_lgr_terminate_work [smc] RIP: 0010:__flush_work+0x19e/0x1b0 Call Trace: ? __wake_up_common+0x7a/0x190 ? work_busy+0x80/0x80 __cancel_work_timer+0xe3/0x160 smc_close_cancel_work+0x1a/0x70 [smc] smc_close_active_abort+0x207/0x360 [smc] __smc_lgr_terminate.part.38+0xc8/0x180 [smc] process_one_work+0x19e/0x340 worker_thread+0x30/0x370 ? process_one_work+0x340/0x340 kthread+0x117/0x130 ? __kthread_cancel_work+0x50/0x50 ret_from_fork+0x22/0x30 This is because when smc_close_cancel_work is triggered,
GHSA
GHSA-mv4p-vmf8-27c9: In the Linux kernel, the following vulnerability has been resolved:
net/smc: initialize close_work early to avoid warning
We encountered a warning t
ghsa_unreviewed·2024-12-27
CVE-2024-56641 [MEDIUM] GHSA-mv4p-vmf8-27c9: In the Linux kernel, the following vulnerability has been resolved:
net/smc: initialize close_work early to avoid warning
We encountered a warning t
In the Linux kernel, the following vulnerability has been resolved:
net/smc: initialize close_work early to avoid warning
We encountered a warning that close_work was canceled before
initialization.
WARNING: CPU: 7 PID: 111103 at kernel/workqueue.c:3047 __flush_work+0x19e/0x1b0
Workqueue: events smc_lgr_terminate_work [smc]
RIP: 0010:__flush_work+0x19e/0x1b0
Call Trace:
? __wake_up_common+0x7a/0x190
? work_busy+0x80/0x80
__cancel_work_timer+0xe3/0x160
smc_close_cancel_work+0x1a/0x70 [smc]
smc_close_active_abort+0x207/0x360 [smc]
__smc_lgr_terminate.part.38+0xc8/0x180 [smc]
process_one_work+0x19e/0x340
worker_thread+0x30/0x370
? process_one_work+0x340/0x340
kthread+0x117/0x130
? __kthread_cancel_work+0x50/0x50
ret_from_fork+0x22/0x30
This is because when smc_close_cancel_work is trigger
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- S390 architecture;
- SuperH RISC architecture;
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Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
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Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- RAM backed block device driver;
- Compressed RAM block device driver;
- TPM device driver;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- Hardware cry
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Title: Linux kernel (Real-time) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- RAM backed block device driver;
- Compressed RAM block device driver;
- TPM device driver;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- Hardwa
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Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- RAM backed block device driver;
- Compressed RAM block device driver;
- TPM device driver;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto de
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Linux kernel vulnerabilities
vendor_ubuntu·2025-04-23
CVE-2024-53083 Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- RAM backed block device driver;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- TPM device driver;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- CPU frequency scaling
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-04-23
CVE-2024-53047 Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- RAM backed block device driver;
- Compressed RAM block device driver;
- TPM device driver;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto de
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-04-23
CVE-2024-53047 Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- RAM backed block device driver;
- Compressed RAM block device driver;
- TPM device driver;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto de
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities
vendor_ubuntu·2025-04-01
CVE-2024-56761 Linux kernel (Raspberry Pi) vulnerabilities
Title: Linux kernel (Raspberry Pi) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- Ublk userspace block driver;
- Virtio block driver;
- Bluetooth drivers;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Microsoft Hyper-V drivers;
- Hardware monitoring drivers;
- I3C subsy
Ubuntu
Linux kernel (Low Latency) vulnerabilities
vendor_ubuntu·2025-03-27
CVE-2024-56582 Linux kernel (Low Latency) vulnerabilities
Title: Linux kernel (Low Latency) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- Compute Acceleration Framework;
- ACPI
Ubuntu
Linux kernel (Low Latency) vulnerabilities
vendor_ubuntu·2025-03-27
CVE-2024-56582 Linux kernel (Low Latency) vulnerabilities
Title: Linux kernel (Low Latency) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- Ublk userspace block driver;
- Virtio block driver;
- Bluetooth drivers;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Microsoft Hyper-V drivers;
- Hardware monitoring drivers;
- I3C subsys
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-03-27
CVE-2024-56582 Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- Ublk userspace block driver;
- Virtio block driver;
- Bluetooth drivers;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Microsoft Hyper-V drivers;
- Hardware monitoring drivers;
- I3C subsystem;
- IIO ADC
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2025-03-27
CVE-2024-56582 Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- Ublk userspace block driver;
- Virtio block driver;
- Bluetooth drivers;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- Microsoft Hyper-V drivers;
- Hardware monitoring drivers;
- I3C subsystem;
- I
Red Hat
kernel: net/smc: initialize close_work early to avoid warning
vendor_redhat·2024-12-27·CVSS 5.5
CVE-2024-56641 [MEDIUM] CWE-665 kernel: net/smc: initialize close_work early to avoid warning
kernel: net/smc: initialize close_work early to avoid warning
In the Linux kernel, the following vulnerability has been resolved:
net/smc: initialize close_work early to avoid warning
We encountered a warning that close_work was canceled before
initialization.
WARNING: CPU: 7 PID: 111103 at kernel/workqueue.c:3047 __flush_work+0x19e/0x1b0
Workqueue: events smc_lgr_terminate_work [smc]
RIP: 0010:__flush_work+0x19e/0x1b0
Call Trace:
? __wake_up_common+0x7a/0x190
? work_busy+0x80/0x80
__cancel_work_timer+0xe3/0x160
smc_close_cancel_work+0x1a/0x70 [smc]
smc_close_active_abort+0x207/0x360 [smc]
__smc_lgr_terminate.part.38+0xc8/0x180 [smc]
process_one_work+0x19e/0x340
worker_thread+0x30/0x370
? process_one_work+0x340/0x340
kthread+0x117/0x130
? __kthread_cancel_work+0x50/0x50
ret_from_fork+0x22
Microsoft
net/smc: initialize close_work early to avoid warning
vendor_msrc·2024-12-10·CVSS 5.5
CVE-2024-56641 [MEDIUM] net/smc: initialize close_work early to avoid warning
net/smc: initialize close_work early to avoid warning
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Debian
CVE-2024-56641: linux - In the Linux kernel, the following vulnerability has been resolved: net/smc: in...
vendor_debian·2024·CVSS 5.5
CVE-2024-56641 [MEDIUM] CVE-2024-56641: linux - In the Linux kernel, the following vulnerability has been resolved: net/smc: in...
In the Linux kernel, the following vulnerability has been resolved: net/smc: initialize close_work early to avoid warning We encountered a warning that close_work was canceled before initialization. WARNING: CPU: 7 PID: 111103 at kernel/workqueue.c:3047 __flush_work+0x19e/0x1b0 Workqueue: events smc_lgr_terminate_work [smc] RIP: 0010:__flush_work+0x19e/0x1b0 Call Trace: ? __wake_up_common+0x7a/0x190 ? work_busy+0x80/0x80 __cancel_work_timer+0xe3/0x160 smc_close_cancel_work+0x1a/0x70 [smc] smc_close_active_abort+0x207/0x360 [smc] __smc_lgr_terminate.part.38+0xc8/0x180 [smc] process_one_work+0x19e/0x340 worker_thread+0x30/0x370 ? process_one_work+0x340/0x340 kthread+0x117/0x130 ? __kthread_cancel_work+0x50/0x50 ret_from_fork+0x22/0x30 This is because when smc_close_cancel_work is triggered,
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2024-12-27
Published