CVE-2026-43211

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Source

https://cve.org/CVERecord?id=CVE-2026-43211

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43211.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-43211

Downstream

BELL (1)

BELL-CVE-2026-43211

DEBIAN (1)

DEBIAN-CVE-2026-43211

OESA (2)

openSUSE (1)

openSUSE-SU-2026:21555-1

ROOT (3)

SUSE (14)

UBUNTU (1)

Related

openSUSE (1)

openSUSE-SU-2026:21555-1

SUSE (14)

Published

2026-05-06T11:28:14Z

Modified

2026-10-08T02:50:54Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

PCI: Fix pci_slot_trylock() error handling

Details

In the Linux kernel, the following vulnerability has been resolved:

PCI: Fix pci_slot_trylock() error handling

Commit a4e772898f8b ("PCI: Add missing bridge lock to pci_bus_lock()") delegates the bridge device's pci_dev_trylock() to pci_bus_trylock() in pci_slot_trylock(), but it forgets to remove the corresponding pci_dev_unlock() when pci_bus_trylock() fails.

Before a4e772898f8b, the code did:

if (!pci_dev_trylock(dev)) /* <- lock bridge device / goto unlock; if (dev->subordinate) { if (!pci_bus_trylock(dev->subordinate)) { pci_dev_unlock(dev); / <- unlock bridge device */ goto unlock; } }

After a4e772898f8b the bridge-device lock is no longer taken, but the pci_dev_unlock(dev) on the failure path was left in place, leading to the bug.

This yields one of two errors:

A warning that the lock is being unlocked when no one holds it.
An incorrect unlock of a lock that belongs to another thread.

Fix it by removing the now-redundant pci_dev_unlock(dev) on the failure path.

[Same patch later posted by Keith at https://patch.msgid.link/20260116184150.3013258-1-kbusch@meta.com]

Database specific

{
    "cna_assigner":  "Linux",
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43211.json"
}

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

e2355d513b89a2cb511b4ded0deb426cdb01acd0

Fixed

ebb27b7399ab8b9eb1f792b329aa5f6250c590d4

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945

Fixed

fbe06a3058114bf95a17a4941b205f4b321c6f0a

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

7253b4fed46471cc247c6cacefac890a8472c083

Fixed

943ed56606a7ab2fe5a99cad572dd17d484310c7

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

78c6e39fef5c428960aff742149bba302dd46f5a

Fixed

a19b61fdb958ffadbba85b43c991eb9fc70c1c1c

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

a4e772898f8bf2e7e1cf661a12c60a5612c4afab

Fixed

0425aaf20b407d2f2cf3bf469808e4a35f9abb8b

Fixed

bd435f4b738130d732ef64e0e57e45185f77165d

Fixed

8b08ea9690b212b7bf7f12414039259cf34b1aa0

Fixed

9368d1ee62829b08aa31836b3ca003803caf0b72

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

5.10.226

Fixed

5.10.252

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

5.15.167

Fixed

5.15.202

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

6.1.110

Fixed

6.1.165

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

6.6.51

Fixed

6.6.128

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

4.19.322

Fixed

4.20

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

5.4.284

Fixed

5.5

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

6.10.10

Fixed

6.11

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

0790b89c7e911003b8c50ae50e3ac7645de1fae9

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

df77a678c33871a6e4ac5b54a71662f1d702335b

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

81c68e218ab883dfa368460a59b674084c0240da

Affected versions

v4.*

v4.19.322

v4.19.323

v4.19.324

v4.19.325

v5.*

v5.10.226

v5.10.227

v5.10.228

v5.10.229

v5.10.230

v5.10.231

v5.10.232

v5.10.233

v5.10.234

v5.10.235

v5.10.236

v5.10.237

v5.10.238

v5.10.239

v5.10.240

v5.10.241

v5.10.242

v5.10.243

v5.10.244

v5.10.245

v5.10.246

v5.10.247

v5.10.248

v5.10.249

v5.10.250

v5.10.251

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

v5.15.195

v5.15.196

v5.15.197

v5.15.198

v5.15.199

v5.15.200

v5.15.201

v5.4.284

v5.4.285

v5.4.286

v5.4.287

v5.4.288

v5.4.289

v5.4.290

v5.4.291

v5.4.292

v5.4.293

v5.4.294

v5.4.295

v5.4.296

v5.4.297

v5.4.298

v5.4.299

v5.4.300

v5.4.301

v5.4.302

v6.*

v6.1.110

v6.1.111

v6.1.112

v6.1.113

v6.1.114

v6.1.115

v6.1.116

v6.1.117

v6.1.118

v6.1.119

v6.1.120

v6.1.121

v6.1.122

v6.1.123

v6.1.124

v6.1.125

v6.1.126

v6.1.127

v6.1.128

v6.1.129

v6.1.130

v6.1.131

v6.1.132

v6.1.133

v6.1.134

v6.1.135

v6.1.136

v6.1.137

v6.1.138

v6.1.139

v6.1.140

v6.1.141

v6.1.142

v6.1.143

v6.1.144

v6.1.145

v6.1.146

v6.1.147

v6.1.148

v6.1.149

v6.1.150

v6.1.151

v6.1.152

v6.1.153

v6.1.154

v6.1.155

v6.1.156

v6.1.157

v6.1.158

v6.1.159

v6.1.160

v6.1.161

v6.1.162

v6.1.163

v6.1.164

v6.10.10

v6.10.11

v6.10.12

v6.10.13

v6.10.14

v6.6.100

v6.6.101

v6.6.102

v6.6.103

v6.6.104

v6.6.105

v6.6.106

v6.6.107

v6.6.108

v6.6.109

v6.6.110

v6.6.111

v6.6.112

v6.6.113

v6.6.114

v6.6.115

v6.6.116

v6.6.117

v6.6.118

v6.6.119

v6.6.120

v6.6.121

v6.6.122

v6.6.123

v6.6.124

v6.6.125

v6.6.126

v6.6.127

v6.6.51

v6.6.52

v6.6.53

v6.6.54

v6.6.55

v6.6.56

v6.6.57

v6.6.58

v6.6.59

v6.6.60

v6.6.61

v6.6.62

v6.6.63

v6.6.64

v6.6.65

v6.6.66

v6.6.67

v6.6.68

v6.6.69

v6.6.70

v6.6.71

v6.6.72

v6.6.73

v6.6.74

v6.6.75

v6.6.76

v6.6.77

v6.6.78

v6.6.79

v6.6.80

v6.6.81

v6.6.82

v6.6.83

v6.6.84

v6.6.85

v6.6.86

v6.6.87

v6.6.88

v6.6.89

v6.6.90

v6.6.91

v6.6.92

v6.6.93

v6.6.94

v6.6.95

v6.6.96

v6.6.97

v6.6.98

v6.6.99

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43211.json"

Linux / Kernel

Package

Name: Kernel

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

5.10.252

Type: ECOSYSTEM
Events: Introduced

5.11.0

Fixed

5.15.202

Type: ECOSYSTEM
Events: Introduced

5.16.0

Fixed

6.1.165

Type: ECOSYSTEM
Events: Introduced

6.2.0

Fixed

6.6.128

Type: ECOSYSTEM
Events: Introduced

6.7.0

Fixed

6.12.75

Type: ECOSYSTEM
Events: Introduced

6.11.0

Fixed

6.18.16

Type: ECOSYSTEM
Events: Introduced

6.13.0

Fixed

6.19.6

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43211.json"