{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"ef2ac07ab83163b9a53f45da20e14302591ad9cc","status":"affected","version":"d9027470b88631d0956ac37cdadfdeb9cdcf2c99","versionType":"git"},{"lessThan":"f23058dc2398db1d8faca9a2b1ce30b85cdd8b22","status":"affected","version":"d9027470b88631d0956ac37cdadfdeb9cdcf2c99","versionType":"git"},{"lessThan":"f54331962883f4fc4bf5e487e6e7cf07c4567fef","status":"affected","version":"d9027470b88631d0956ac37cdadfdeb9cdcf2c99","versionType":"git"},{"lessThan":"1ff36351309e3eadcff297480baf4785e726de9b","status":"affected","version":"d9027470b88631d0956ac37cdadfdeb9cdcf2c99","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"2.6.37"},{"lessThan":"2.6.37","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.156","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.80","versionType":"semver"},{"lessThanOrEqual":"6.0.*","status":"unaffected","version":"6.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.1","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2022-49823","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nata: libata-transport: fix error handling in ata_tdev_add()\n\nIn ata_tdev_add(), the return value of transport_add_device() is\nnot checked. As a result, it causes null-ptr-deref while removing\nthe module, because transport_remove_device() is called to remove\nthe device that was not added.\n\nUnable to handle kernel NULL pointer dereference at virtual address 00000000000000d0\nCPU: 13 PID: 13603 Comm: rmmod Kdump: loaded Tainted: G        W          6.1.0-rc3+ #36\npstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : device_del+0x48/0x3a0\nlr : device_del+0x44/0x3a0\nCall trace:\n device_del+0x48/0x3a0\n attribute_container_class_device_del+0x28/0x40\n transport_remove_classdev+0x60/0x7c\n attribute_container_device_trigger+0x118/0x120\n transport_remove_device+0x20/0x30\n ata_tdev_delete+0x24/0x50 [libata]\n ata_tlink_delete+0x40/0xa0 [libata]\n ata_tport_delete+0x2c/0x60 [libata]\n ata_port_detach+0x148/0x1b0 [libata]\n ata_pci_remove_one+0x50/0x80 [libata]\n ahci_remove_one+0x4c/0x8c [ahci]\n\nFix this by checking and handling return value of transport_add_device()\nin ata_tdev_add(). In the error path, device_del() is called to delete\nthe device which was added earlier in this function, and ata_tdev_free()\nis called to free ata_dev.","epss":{"date":"2026-11-05","percentile":0.11999,"score":0.00215},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793908807972,"publishedAt":1746108584205,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/ef2ac07ab83163b9a53f45da20e14302591ad9cc"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/f23058dc2398db1d8faca9a2b1ce30b85cdd8b22"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/f54331962883f4fc4bf5e487e6e7cf07c4567fef"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/1ff36351309e3eadcff297480baf4785e726de9b"}],"remediation":[],"revision":"63f033da7d20ee10c4b052a057a5b05057772534381b524e654eb732368c3633","sources":[{"modifiedAt":1793908807972,"name":"CNA: Linux","retrievedAt":1793909454660,"url":"https://www.cve.org/CVERecord?id=CVE-2022-49823"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793909487233,"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-49823"}],"ssvc":{"assessedAt":1793908183916,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"ata: libata-transport: fix error handling in ata_tdev_add()","updatedAt":1793909487233}