CVE-2022-49826: ata: libata-transport: fix double ata_host_put() in ata_tport_add()

Q: What conditions are required to trigger this issue?

The failure occurs in the error path of ata_tport_add() during device probing or driver binding. A failed setup followed by device unbinding can cause the ATA host reference count to be decremented twice.

Q: What is the operational impact of a successful trigger?

The double reference release frees and nulls ATA host ports before cleanup completes. Subsequent cleanup in ata_host_stop() can dereference a null pointer, causing a kernel crash.

Q: Who is most directly exposed?

Systems running an affected Linux kernel with libata transport involved in ATA device probing and an error/unbind sequence are exposed. The provided data identifies Linux kernel packages including Debian Linux and Ubuntu kernel variants.

Q: Is this remotely exploitable without local access?

The supplied severity vector lists local attack vector, low attack complexity, low privileges required, and no user interaction. It does not describe a remote trigger.

Published May 1, 2025

Updated

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

ata: libata-transport: fix double atahostput() in atatportadd()

In the error path in atatportadd(), when calling putdevice(), atatportrelease() is called, it will put the refcount of 'ap->host'.

And then atahostput() is called again, the refcount is decreased to 0, atahostrelease() is called, all ports are freed and set to null.

When unbinding the device after failure, atahoststop() is called to release the resources, it leads a null-ptr-deref(), because all the ports all freed and null.

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 CPU: 7 PID: 18671 Comm: modprobe Kdump: loaded Tainted: G E 6.1.0-rc3+ #8 pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : atahoststop+0x3c/0x84 [libata] lr : releasenodes+0x64/0xd0 Call trace: atahoststop+0x3c/0x84 [libata] releasenodes+0x64/0xd0 devresreleaseall+0xbc/0x1b0 deviceunbindcleanup+0x20/0x70 reallyprobe+0x158/0x320 driverprobedevice+0x84/0x120 driverprobedevice+0x44/0x120 driverattach+0xb4/0x220 busforeachdev+0x78/0xdc driverattach+0x2c/0x40 busadddriver+0x184/0x240 driverregister+0x80/0x13c pciregisterdriver+0x4c/0x60 ahcipcidriverinit+0x30/0x1000 [ahci]

Fix this by removing redundant atahostput() in the error path.

Affected Software

145 affected componentsFixes available

Linux Linux kernel>=6.1.0-rc3

Linux Linux kernel>=4.17<4.19.267

Linux Linux kernel>=4.20<5.4.225

Linux Linux kernel>=5.5<5.10.156

Linux Linux kernel>=5.11<5.15.80

Linux Linux kernel>=5.16<6.0.10

Linux Linux kernel=6.1-rc1

Linux Linux kernel=6.1-rc2

Linux Linux kernel=6.1-rc3

Linux Linux kernel=6.1-rc4

debian/linux<6.0.10-1

6.0.10-1

debian/linux<6.0.10-1

6.0.10-1

debian/linux<6.0.10-1

6.0.10-1

debian/linux

6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1

ubuntu/linux-hwe-edge*

ubuntu/linux-aws-5.4<5.4.0-1097.105~18.04.1

5.4.0-1097.105~18.04.1

ubuntu/linux-azure-5.4<5.4.0-1104.110~18.04.1

5.4.0-1104.110~18.04.1

ubuntu/linux-gcp-5.4<5.4.0-1101.110~18.04.1

5.4.0-1101.110~18.04.1

ubuntu/linux-hwe-5.4<5.4.0-144.161~18.04.1

5.4.0-144.161~18.04.1

ubuntu/linux-ibm-5.4<5.4.0-1045.50~18.04.1

5.4.0-1045.50~18.04.1

ubuntu/linux-oracle-5.4<5.4.0-1094.103~18.04.1

5.4.0-1094.103~18.04.1

ubuntu/linux-raspi-5.4<5.4.0-1081.92~18.04.1

5.4.0-1081.92~18.04.1

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-azure*

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-5.3*

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-edge*

ubuntu/linux-oem*

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux<5.4.0-144.161

5.4.0-144.161

ubuntu/linux-aws<5.4.0-1097.105

5.4.0-1097.105

ubuntu/linux-aws-5.15<5.15.0-1031.35~20.04.1

5.15.0-1031.35~20.04.1

ubuntu/linux-azure<5.4.0-1104.110

5.4.0-1104.110

ubuntu/linux-azure-5.15<5.15.0-1034.41~20.04.1

5.15.0-1034.41~20.04.1

ubuntu/linux-bluefield<5.4.0-1059.65

5.4.0-1059.65

ubuntu/linux-gcp<5.4.0-1101.110

5.4.0-1101.110

ubuntu/linux-gcp-5.15<5.15.0-1030.37~20.04.1

5.15.0-1030.37~20.04.1

ubuntu/linux-hwe-5.15<5.15.0-67.74~20.04.1

5.15.0-67.74~20.04.1

ubuntu/linux-ibm<5.4.0-1045.50

5.4.0-1045.50

ubuntu/linux-intel-iotg-5.15<5.15.0-1026.31~20.04.1

5.15.0-1026.31~20.04.1

ubuntu/linux-iot<5.4.0-1013.15

5.4.0-1013.15

ubuntu/linux-kvm<5.4.0-1087.93

5.4.0-1087.93

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-67.74~20.04.1

5.15.0-67.74~20.04.1

ubuntu/linux-nvidia-tegra-5.15<5.15.0-1014.14~20.04.1

5.15.0-1014.14~20.04.1

ubuntu/linux-oracle<5.4.0-1094.103

5.4.0-1094.103

ubuntu/linux-oracle-5.15<5.15.0-1030.36~20.04.1

5.15.0-1030.36~20.04.1

ubuntu/linux-raspi<5.4.0-1081.92

5.4.0-1081.92

ubuntu/linux-riscv-5.15<5.15.0-1030.34~20.04.1

5.15.0-1030.34~20.04.1

ubuntu/linux-xilinx-zynqmp<5.4.0-1022.26

5.4.0-1022.26

ubuntu/linux-aws-5.11*

ubuntu/linux-aws-5.13*

ubuntu/linux-aws-5.8*

ubuntu/linux-azure-5.11*

ubuntu/linux-azure-5.13*

ubuntu/linux-azure-5.8*

ubuntu/linux-azure-fde*

ubuntu/linux-gcp-5.11*

ubuntu/linux-gcp-5.13*

ubuntu/linux-gcp-5.8*

ubuntu/linux-gke*

ubuntu/linux-gke-5.15*

ubuntu/linux-gkeop*

ubuntu/linux-gkeop-5.15*

ubuntu/linux-hwe-5.11*

ubuntu/linux-hwe-5.13*

ubuntu/linux-hwe-5.8*

ubuntu/linux-intel-5.13*

ubuntu/linux-oem-5.10*

ubuntu/linux-oem-5.13*

ubuntu/linux-oem-5.6*

ubuntu/linux-oracle-5.11*

ubuntu/linux-oracle-5.13*

ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi2*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.11*

ubuntu/linux-riscv-5.8*

ubuntu/linux-aws-fips<5.4.0-1099.107+fips1

5.4.0-1099.107+fips1

ubuntu/linux-azure-fips<5.4.0-1104.110+fips1

5.4.0-1104.110+fips1

ubuntu/linux-fips<5.4.0-1073.82

5.4.0-1073.82

ubuntu/linux-gcp-fips<5.4.0-1101.110+fips1

5.4.0-1101.110+fips1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-67.74

5.15.0-67.74

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1031.35

5.15.0-1031.35

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-azure<5.15.0-1034.41

5.15.0-1034.41

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-fde<5.15.0-1034.41.1

5.15.0-1034.41.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1030.37

5.15.0-1030.37

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gke<5.15.0-1028.33

5.15.0-1028.33

ubuntu/linux-gkeop<5.15.0-1016.21

5.15.0-1016.21

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-ibm<5.15.0-1026.29

5.15.0-1026.29

ubuntu/linux-intel-iotg<5.15.0-1026.31

5.15.0-1026.31

ubuntu/linux-kvm<5.15.0-1029.34

5.15.0-1029.34

ubuntu/linux-lowlatency<5.15.0-67.74

5.15.0-67.74

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-nvidia<5.15.0-1023.23

5.15.0-1023.23

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1030.36

5.15.0-1030.36

ubuntu/linux-oracle-6.5*

ubuntu/linux-raspi<5.15.0-1025.27

5.15.0-1025.27

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-bluefield<5.15.0-1014.16

5.15.0-1014.16

ubuntu/linux-intel-iot-realtime<5.15.0-1022.27

5.15.0-1022.27

ubuntu/linux-realtime<5.15.0-1033.36

5.15.0-1033.36

ubuntu/linux-raspi-realtime*

ubuntu/linux-realtime*

ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade debian/linux to a version that resolves this vulnerability.
Fixed in 6.0.10-1
Upgrade
Upgrade debian/linux to a version that resolves this vulnerability.
Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1
Upgrade
Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1097.105~18.04.1
Upgrade
Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1104.110~18.04.1
Upgrade
Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1101.110~18.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-144.161~18.04.1
Upgrade
Upgrade ubuntu/linux-ibm-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1045.50~18.04.1
Upgrade
Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1094.103~18.04.1
Upgrade
Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1081.92~18.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.4.0-144.161
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.4.0-1097.105
Upgrade
Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1031.35~20.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.4.0-1104.110
Upgrade
Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1034.41~20.04.1
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.4.0-1059.65
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.4.0-1101.110
Upgrade
Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.37~20.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-67.74~20.04.1
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.4.0-1045.50
Upgrade
Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1026.31~20.04.1
Upgrade
Upgrade ubuntu/linux-iot to a version that resolves this vulnerability.
Fixed in 5.4.0-1013.15
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.4.0-1087.93
Upgrade
Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-67.74~20.04.1
Upgrade
Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1014.14~20.04.1
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.4.0-1094.103
Upgrade
Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.36~20.04.1
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.4.0-1081.92
Upgrade
Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.34~20.04.1
Upgrade
Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.
Fixed in 5.4.0-1022.26
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1099.107+fips1
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1104.110+fips1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1073.82
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1101.110+fips1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.15.0-67.74
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.15.0-1031.35
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.15.0-1034.41
Upgrade
Upgrade ubuntu/linux-azure-fde to a version that resolves this vulnerability.
Fixed in 5.15.0-1034.41.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.37
Upgrade
Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.
Fixed in 5.15.0-1028.33
Upgrade
Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.
Fixed in 5.15.0-1016.21
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.15.0-1026.29
Upgrade
Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.
Fixed in 5.15.0-1026.31
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.15.0-1029.34
Upgrade
Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.
Fixed in 5.15.0-67.74
Upgrade
Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.
Fixed in 5.15.0-1023.23
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.36
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.15.0-1025.27
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.15.0-1014.16
Upgrade
Upgrade ubuntu/linux-intel-iot-realtime to a version that resolves this vulnerability.
Fixed in 5.15.0-1022.27
Upgrade
Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.
Fixed in 5.15.0-1033.36
Compensating control
Remove the redundant ata_host_put() call from the error path in ata_tport_add().

Event History

May 1, 2025

CVE Published

via MITRE·02:09 PM

Data Sourced

via MITRE·02:09 PM

DescriptionSeverity

Data Sourced

via OSV·03:16 PM

DescriptionSeverityAffected Software

Data Sourced

via NVD·03:16 PM

RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What conditions are required to trigger this issue?

The failure occurs in the error path of ata_tport_add() during device probing or driver binding. A failed setup followed by device unbinding can cause the ATA host reference count to be decremented twice.

What is the operational impact of a successful trigger?

The double reference release frees and nulls ATA host ports before cleanup completes. Subsequent cleanup in ata_host_stop() can dereference a null pointer, causing a kernel crash.

Who is most directly exposed?

Systems running an affected Linux kernel with libata transport involved in ATA device probing and an error/unbind sequence are exposed. The provided data identifies Linux kernel packages including Debian Linux and Ubuntu kernel variants.

Is this remotely exploitable without local access?

The supplied severity vector lists local attack vector, low attack complexity, low privileges required, and no user interaction. It does not describe a remote trigger.

CVE-2022-49826: ata: libata-transport: fix double ata_host_put() in ata_tport_add()

Affected Software

Remediation

Event History

Frequently Asked Questions

What conditions are required to trigger this issue?

What is the operational impact of a successful trigger?

Who is most directly exposed?

Is this remotely exploitable without local access?

Company

Resources

Contact

Frequently Asked Questions

What conditions are required to trigger this issue?

What is the operational impact of a successful trigger?

Who is most directly exposed?

Is this remotely exploitable without local access?