CVE-2022-49824
ata: libata-transport: fix error handling in ata_tlink_add()
In the Linux kernel, the following vulnerability has been resolved: ata: libata-transport: fix error handling in ata_tlink_add() In ata_tlink_add(), the return value of transport_add_device() is not checked. As a result, it causes null-ptr-deref while removing the module, because transport_remove_device() is called to remove the device that was not added. Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0 CPU: 33 PID: 13850 Comm: rmmod Kdump: loaded Tainted: G W 6.1.0-rc3+ #12 pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : device_del+0x48/0x39c lr : device_del+0x44/0x39c Call trace: device_del+0x48/0x39c attribute_container_class_device_del+0x28/0x40 transport_remove_classdev+0x60/0x7c attribute_container_device_trigger+0x118/0x120 transport_remove_device+0x20/0x30 ata_tlink_delete+0x88/0xb0 [libata] ata_tport_delete+0x2c/0x60 [libata] ata_port_detach+0x148/0x1b0 [libata] ata_pci_remove_one+0x50/0x80 [libata] ahci_remove_one+0x4c/0x8c [ahci] Fix this by checking and handling return value of transport_add_device() in ata_tlink_add().
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ d9027470b88631d0956ac37cdadfdeb9cdcf2c99; < 7377a14598f6b04446c54bc4a50cd249470d6c6f (affected, git) ≥ d9027470b88631d0956ac37cdadfdeb9cdcf2c99; < 67b219314628b90b3a314528e177335b0cd5c70b (affected, git) ≥ d9027470b88631d0956ac37cdadfdeb9cdcf2c99; < d5234480ca822bdcf03fe4d6a590ddcb854558f7 (affected, git) ≥ d9027470b88631d0956ac37cdadfdeb9cdcf2c99; < cf0816f6322c5c37ee52655f928e91ecf32da103 (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
2.6.37 (affected) ≥ 0; < 2.6.37 (unaffected, semver) ≥ 5.10.156; ≤ 5.10.* (unaffected, semver) ≥ 5.15.80; ≤ 5.15.* (unaffected, semver) ≥ 6.0.10; ≤ 6.0.* (unaffected, semver) ≥ 6.1; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/7377a14598f6b04446c54bc4a50cd249470d6c6fCNA: Linux
- https://git.kernel.org/stable/c/67b219314628b90b3a314528e177335b0cd5c70bCNA: Linux
- https://git.kernel.org/stable/c/d5234480ca822bdcf03fe4d6a590ddcb854558f7CNA: Linux
- https://git.kernel.org/stable/c/cf0816f6322c5c37ee52655f928e91ecf32da103CNA: Linux
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