Answer in brief
CVE-2022-49826 records a High severity (CVSS 7.8) vulnerability in ata: libata-transport: fix double ata_host_put() in ata_tport_add(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=2623c7a5f2799569d8bb05eb211da524a8144cb3 <30e12e2be27ac6c4be2af4163c70db381364706f || >=2623c7a5f2799569d8bb05eb211da524a8144cb3 <bec9ded5404cb14e5f5470103d0973a2ff83d6a5 || >=2623c7a5f2799569d8bb05eb211da524a8144cb3 <ac471468f7c16cda2525909946ca13ddbcd14000 || >=2623c7a5f2799569d8bb05eb211da524a8144cb3 <377ff82c33c0cb74562a353361b64b33c09562cf || >=2623c7a5f2799569d8bb05eb211da524a8144cb3 <865a6da40ba092c18292ae5f6194756131293745 || >=2623c7a5f2799569d8bb05eb211da524a8144cb3 <8c76310740807ade5ecdab5888f70ecb6d35732e | 30e12e2be27ac6c4be2af4163c70db381364706f, bec9ded5404cb14e5f5470103d0973a2ff83d6a5, ac471468f7c16cda2525909946ca13ddbcd14000, 377ff82c33c0cb74562a353361b64b33c09562cf, 865a6da40ba092c18292ae5f6194756131293745, 8c76310740807ade5ecdab5888f70ecb6d35732e |
| Linux/Linuxgeneric | 4.17 | Not reported |
Published upstream
May 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: ata: libata-transport: fix double ata_host_put() in ata_tport_add() In the error path in ata_tport_add(), when calling put_device(), ata_tport_release() is called, it will put the refcount of 'ap->host'. And then ata_host_put() is called again, the refcount is decreased to 0, ata_host_release() is called, all ports are freed and set to null. When unbinding the device after failure, ata_host_stop() 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 : ata_host_stop+0x3c/0x84 [libata] lr : release_nodes+0x64/0xd0 Call trace: ata_host_stop+0x3c/0x84 [libata] release_nodes+0x64/0xd0 devres_release_all+0xbc/0x1b0 device_unbind_cleanup+0x20/0x70 really_probe+0x158/0x320 __driver_probe_device+0x84/0x120 driver_probe_device+0x44/0x120 __driver_attach+0xb4/0x220 bus_for_each_dev+0x78/0xdc driver_attach+0x2c/0x40 bus_add_driver+0x184/0x240 driver_register+0x80/0x13c __pci_register_driver+0x4c/0x60 ahci_pci_driver_init+0x30/0x1000 [ahci] Fix this by removing redundant ata_host_put() in the error path.
Quoted source text, attributed separately from HOL analysis.