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CVE-2024-26605— PCI/ASPM: Fix deadlock when enabling ASPM

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux Kernel 存在安全漏洞，该漏洞源于启用 ASPM 时，会导致死锁。

AI Predicted 5.5 Difficulty: Easy EPSS 0.21% · P10

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux b9c370b61d735a0e5390c42771e7eb21413f7868< 0f7908a016c092cfdaa16d785fa5099d867bc1a3 affected
8cc22ba3f77c59df5f1ac47d62df51efb28cd868< b0f4478838be1f1d330061201898fef65bf8fd7c affected
f93e71aea6c60ebff8adbd8941e678302d377869< ef90508574d7af48420bdc5f7b9a4f1cdd26bc70 affected
f93e71aea6c60ebff8adbd8941e678302d377869< 1e560864159d002b453da42bd2c13a1805515a20 affected
1f2f662c8bec75d1311e063efaa9107435cf16c8 affected
6.1.72< 6.1.88 affected
6.6.11< 6.6.29 affected
5.15.147< 5.16 affected
… +6 more rows
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I. Basic Information for CVE-2024-26605

Vulnerability Information
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Vulnerability Title
PCI/ASPM: Fix deadlock when enabling ASPM
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: PCI/ASPM: Fix deadlock when enabling ASPM A last minute revert in 6.7-final introduced a potential deadlock when enabling ASPM during probe of Qualcomm PCIe controllers as reported by lockdep: ============================================ WARNING: possible recursive locking detected 6.7.0 #40 Not tainted -------------------------------------------- kworker/u16:5/90 is trying to acquire lock: ffffacfa78ced000 (pci_bus_sem){++++}-{3:3}, at: pcie_aspm_pm_state_change+0x58/0xdc but task is already holding lock: ffffacfa78ced000 (pci_bus_sem){++++}-{3:3}, at: pci_walk_bus+0x34/0xbc other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(pci_bus_sem); lock(pci_bus_sem); *** DEADLOCK *** Call trace: print_deadlock_bug+0x25c/0x348 __lock_acquire+0x10a4/0x2064 lock_acquire+0x1e8/0x318 down_read+0x60/0x184 pcie_aspm_pm_state_change+0x58/0xdc pci_set_full_power_state+0xa8/0x114 pci_set_power_state+0xc4/0x120 qcom_pcie_enable_aspm+0x1c/0x3c [pcie_qcom] pci_walk_bus+0x64/0xbc qcom_pcie_host_post_init_2_7_0+0x28/0x34 [pcie_qcom] The deadlock can easily be reproduced on machines like the Lenovo ThinkPad X13s by adding a delay to increase the race window during asynchronous probe where another thread can take a write lock. Add a new pci_set_power_state_locked() and associated helper functions that can be called with the PCI bus semaphore held to avoid taking the read lock twice.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux Kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux Kernel 存在安全漏洞，该漏洞源于启用 ASPM 时，会导致死锁。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux b9c370b61d735a0e5390c42771e7eb21413f7868 ~ 0f7908a016c092cfdaa16d785fa5099d867bc1a3 -
Linux Linux 6.7 -

II. Public POCs for CVE-2024-26605

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III. Intelligence Information for CVE-2024-26605

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Other References for CVE-2024-26605 (4)

Same Patch Batch · Linux · 2024-02-24 · 6 CVEs total

CVE-2024-26601 7.8 HIGH ext4: regenerate buddy after block freeing failed if under fc replay
CVE-2024-26603 x86/fpu: Stop relying on userspace for info to fault in xsave buffer
CVE-2024-26604 Revert "kobject: Remove redundant checks for whether ktype is NULL"
CVE-2024-26602 sched/membarrier: reduce the ability to hammer on sys_membarrier
CVE-2024-26600 phy: ti: phy-omap-usb2: Fix NULL pointer dereference for SRP

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26605

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