CVE-2024-26605

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-26605
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26605.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-26605
Downstream
Related
Published
2024-02-24T15:17:13Z
Modified
2025-10-15T08:38:44.607803Z
Summary
PCI/ASPM: Fix deadlock when enabling ASPM
Details

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 (pcibussem){++++}-{3:3}, at: pcieaspmpmstatechange+0x58/0xdc

          but task is already holding lock:

ffffacfa78ced000 (pcibussem){++++}-{3:3}, at: pciwalkbus+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: printdeadlockbug+0x25c/0x348 _lockacquire+0x10a4/0x2064 lockacquire+0x1e8/0x318 downread+0x60/0x184 pcieaspmpmstatechange+0x58/0xdc pcisetfullpowerstate+0xa8/0x114 pcisetpowerstate+0xc4/0x120 qcompcieenableaspm+0x1c/0x3c [pcieqcom] pciwalkbus+0x64/0xbc qcompciehostpostinit270+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 pcisetpowerstatelocked() and associated helper functions that can be called with the PCI bus semaphore held to avoid taking the read lock twice.

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
b9c370b61d735a0e5390c42771e7eb21413f7868
Fixed
0f7908a016c092cfdaa16d785fa5099d867bc1a3
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8cc22ba3f77c59df5f1ac47d62df51efb28cd868
Fixed
b0f4478838be1f1d330061201898fef65bf8fd7c
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
f93e71aea6c60ebff8adbd8941e678302d377869
Fixed
ef90508574d7af48420bdc5f7b9a4f1cdd26bc70
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
f93e71aea6c60ebff8adbd8941e678302d377869
Fixed
1e560864159d002b453da42bd2c13a1805515a20
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
1f2f662c8bec75d1311e063efaa9107435cf16c8

Affected versions

v5.*

v5.15.147
v5.15.148
v5.15.149
v5.15.150
v5.15.151
v5.15.152
v5.15.153
v5.15.154
v5.15.155
v5.15.156
v5.15.157
v5.15.158
v5.15.159
v5.15.160
v5.15.161
v5.15.162
v5.15.163
v5.15.164
v5.15.165
v5.15.166
v5.15.167
v5.15.168
v5.15.169
v5.15.170
v5.15.171
v5.15.172
v5.15.173
v5.15.174
v5.15.175
v5.15.176
v5.15.177
v5.15.178
v5.15.179
v5.15.180
v5.15.181
v5.15.182
v5.15.183
v5.15.184
v5.15.185
v5.15.186
v5.15.187
v5.15.188
v5.15.189
v5.15.190
v5.15.191
v5.15.192
v5.15.193
v5.15.194

v6.*

v6.1.72
v6.1.73
v6.1.74
v6.1.75
v6.1.76
v6.1.77
v6.1.78
v6.1.79
v6.1.80
v6.1.81
v6.1.82
v6.1.83
v6.1.84
v6.1.85
v6.1.86
v6.1.87
v6.6.11
v6.6.12
v6.6.13
v6.6.14
v6.6.15
v6.6.16
v6.6.17
v6.6.18
v6.6.19
v6.6.20
v6.6.21
v6.6.22
v6.6.23
v6.6.24
v6.6.25
v6.6.26
v6.6.27
v6.6.28
v6.7
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.7.1
v6.7.2
v6.7.3
v6.7.4
v6.8-rc1

Database specific 

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            "id": "CVE-2024-26605-75def492"
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                "file": "drivers/pci/pci.c"
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                "function_hash": "203688068109868422396568400789340616146"
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            "id": "CVE-2024-26605-7ebe2775"
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        {
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            "signature_type": "Function",
            "target": {
                "function": "pci_set_low_power_state",
                "file": "drivers/pci/pci.c"
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            "id": "CVE-2024-26605-87828a8a"
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            "signature_type": "Line",
            "target": {
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            },
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            "digest": {
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            "id": "CVE-2024-26605-a5708834"
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        {
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            "digest": {
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                    "145672741975184275216951590279891480862",
                    "170996552858198683937374821911631424013",
                    "93027372877516427523851565006671829234"
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                "threshold": 0.9
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            "id": "CVE-2024-26605-a64bf904"
        },
        {
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            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ef90508574d7af48420bdc5f7b9a4f1cdd26bc70",
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            "target": {
                "function": "pci_walk_bus",
                "file": "drivers/pci/bus.c"
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                "function_hash": "88618099207643176242282688716134702977"
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            "id": "CVE-2024-26605-a82f09e7"
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            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1e560864159d002b453da42bd2c13a1805515a20",
            "signature_type": "Function",
            "target": {
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                "file": "drivers/pci/bus.c"
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            "digest": {
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                "function_hash": "88618099207643176242282688716134702977"
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            "id": "CVE-2024-26605-b6e2b823"
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        {
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            "target": {
                "file": "drivers/pci/bus.c"
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                "threshold": 0.9
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            "id": "CVE-2024-26605-c16a84b2"
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        {
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            "signature_type": "Line",
            "target": {
                "file": "drivers/pci/controller/dwc/pcie-qcom.c"
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            "digest": {
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            "id": "CVE-2024-26605-f69266da"
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            "id": "CVE-2024-26605-fb468617"
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        {
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            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ef90508574d7af48420bdc5f7b9a4f1cdd26bc70",
            "signature_type": "Line",
            "target": {
                "file": "drivers/pci/controller/dwc/pcie-qcom.c"
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            "id": "CVE-2024-26605-fed0586d"
        }
    ]
}

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.88
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.29
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.7.5