CVE & CISA-KEV Catalog

CVE-2025-37993

MEDIUM
5.5
CVSS v3
NVD

Description

In the Linux kernel, the following vulnerability has been resolved: can: m_can: m_can_class_allocate_dev(): initialize spin lock on device probe The spin lock tx_handling_spinlock in struct m_can_classdev is not being initialized. This leads the following spinlock bad magic complaint from the kernel, eg. when trying to send CAN frames with cansend from can-utils: | BUG: spinlock bad magic on CPU#0, cansend/95 | lock: 0xff60000002ec1010, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 | CPU: 0 UID: 0 PID: 95 Comm: cansend Not tainted 6.15.0-rc3-00032-ga79be02bba5c #5 NONE | Hardware name: MachineWare SIM-V (DT) | Call Trace: | [<ffffffff800133e0>] dump_backtrace+0x1c/0x24 | [<ffffffff800022f2>] show_stack+0x28/0x34 | [<ffffffff8000de3e>] dump_stack_lvl+0x4a/0x68 | [<ffffffff8000de70>] dump_stack+0x14/0x1c | [<ffffffff80003134>] spin_dump+0x62/0x6e | [<ffffffff800883ba>] do_raw_spin_lock+0xd0/0x142 | [<ffffffff807a6fcc>] _raw_spin_lock_irqsave+0x20/0x2c | [<ffffffff80536dba>] m_can_start_xmit+0x90/0x34a | [<ffffffff806148b0>] dev_hard_start_xmit+0xa6/0xee | [<ffffffff8065b730>] sch_direct_xmit+0x114/0x292 | [<ffffffff80614e2a>] __dev_queue_xmit+0x3b0/0xaa8 | [<ffffffff8073b8fa>] can_send+0xc6/0x242 | [<ffffffff8073d1c0>] raw_sendmsg+0x1a8/0x36c | [<ffffffff805ebf06>] sock_write_iter+0x9a/0xee | [<ffffffff801d06ea>] vfs_write+0x184/0x3a6 | [<ffffffff801d0a88>] ksys_write+0xa0/0xc0 | [<ffffffff801d0abc>] __riscv_sys_write+0x14/0x1c | [<ffffffff8079ebf8>] do_trap_ecall_u+0x168/0x212 | [<ffffffff807a830a>] handle_exception+0x146/0x152 Initializing the spin lock in m_can_class_allocate_dev solves that problem.

How to fix

Remediation Available
linuxDebian
Fixed in:6.12.29-1CVE-2025-37993
Fixed in:6.12.29-1CVE-2025-37993
linux-aws-6.14Ubuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-gcp-6.14Ubuntu
Fixed in:6.14.0-1014.15~24.04.1USN-7699-1
linux-hwe-6.14Ubuntu
Fixed in:6.14.0-28.28~24.04.1USN-7699-2
linux-image-6.14.0-1010-oemUbuntu
Fixed in:6.14.0-1010.10USN-7699-2
linux-image-6.14.0-1011-awsUbuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-6.14.0-1011-aws-64kUbuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-6.14.0-1011-oracleUbuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-6.14.0-1011-oracle-64kUbuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-6.14.0-1014-gcpUbuntu
Fixed in:6.14.0-1014.15~24.04.1USN-7699-1
linux-image-6.14.0-1014-gcp-64kUbuntu
Fixed in:6.14.0-1014.15~24.04.1USN-7699-1
linux-image-6.14.0-28-genericUbuntu
Fixed in:6.14.0-28.28~24.04.1USN-7699-2
linux-image-6.14.0-28-generic-64kUbuntu
Fixed in:6.14.0-28.28~24.04.1USN-7699-2
linux-image-awsUbuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-aws-6.14Ubuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-aws-64kUbuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-aws-64k-6.14Ubuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-gcpUbuntu
Fixed in:6.14.0-1014.15~24.04.1USN-7699-1
linux-image-gcp-6.14Ubuntu
Fixed in:6.14.0-1014.15~24.04.1USN-7699-1
linux-image-gcp-64kUbuntu
Fixed in:6.14.0-1014.15~24.04.1USN-7699-1
linux-image-gcp-64k-6.14Ubuntu
Fixed in:6.14.0-1014.15~24.04.1USN-7699-1
linux-image-generic-6.14Ubuntu
Fixed in:6.14.0-28.28~24.04.1USN-7699-2
linux-image-generic-64k-6.14Ubuntu
Fixed in:6.14.0-28.28~24.04.1USN-7699-2
linux-image-generic-64k-hwe-24.04Ubuntu
Fixed in:6.14.0-28.28~24.04.1USN-7699-2
linux-image-generic-hwe-24.04Ubuntu
Fixed in:6.14.0-28.28~24.04.1USN-7699-2
linux-image-oem-24.04aUbuntu
Fixed in:6.14.0-1010.10USN-7699-2
linux-image-oem-24.04cUbuntu
Fixed in:6.14.0-1010.10USN-7699-2
linux-image-oem-6.14Ubuntu
Fixed in:6.14.0-1010.10USN-7699-2
linux-image-oracleUbuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-oracle-6.14Ubuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-oracle-64kUbuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-oracle-64k-6.14Ubuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1
linux-image-virtual-6.14Ubuntu
Fixed in:6.14.0-28.28~24.04.1USN-7699-2
linux-image-virtual-hwe-24.04Ubuntu
Fixed in:6.14.0-28.28~24.04.1USN-7699-2
linux-oem-6.14Ubuntu
Fixed in:6.14.0-1010.10USN-7699-2
linux-oracle-6.14Ubuntu
Fixed in:6.14.0-1011.11~24.04.1USN-7699-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.15%probability of exploitation in 30 days
4thpercentile

Low risk: more likely to be exploited than 4% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-14.