{"id":"CVE-2022-49190","title":"kernel/resource: fix kfree() of bootmem memory again","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nkernel/resource: fix kfree() of bootmem memory again\n\nSince commit ebff7d8f270d (\"mem hotunplug: fix kfree() of bootmem\nmemory\"), we could get a resource allocated duri…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= ebff7d8f270d045338d9f4796014f4db429a17f9 < 3379a60f6bb4afcd9c456e340ac525ae649d3ce7","Linux >= ebff7d8f270d045338d9f4796014f4db429a17f9 < a9e88c2618d228d7a4e7e515cf30dc0d0d813f27","Linux >= ebff7d8f270d045338d9f4796014f4db429a17f9 < d7faa04a44a0c37ac3d222fa8e0bdcbfcee9c0c8","Linux >= ebff7d8f270d045338d9f4796014f4db429a17f9 < ab86020070999e758ce2e60c4348f20bf7ddba56","Linux >= ebff7d8f270d045338d9f4796014f4db429a17f9 < 0cbcc92917c5de80f15c24d033566539ad696892","Linux 3.10"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T19:44:23.543113Z"},"published":"2025-02-26","updated":"2026-11-05","sourceUpdated":"2026-11-05T19:49:36.987Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-49190","references":[{"url":"https://git.kernel.org/stable/c/3379a60f6bb4afcd9c456e340ac525ae649d3ce7"},{"url":"https://git.kernel.org/stable/c/a9e88c2618d228d7a4e7e515cf30dc0d0d813f27"},{"url":"https://git.kernel.org/stable/c/d7faa04a44a0c37ac3d222fa8e0bdcbfcee9c0c8"},{"url":"https://git.kernel.org/stable/c/ab86020070999e758ce2e60c4348f20bf7ddba56"},{"url":"https://git.kernel.org/stable/c/0cbcc92917c5de80f15c24d033566539ad696892"}],"tags":["cve.org"],"epss":0.00266,"epssPercentile":0.18578,"ingestedAt":"2026-11-05T22:38:31.564Z","slug":"CVE-2022-49190","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nkernel/resource: fix kfree() of bootmem memory again\n\nSince commit ebff7d8f270d (\"mem hotunplug: fix kfree() of bootmem\nmemory\"), we could get a resource allocated during boot via\nalloc_resource().  And it's required to release the resource using\nfree_resource().  Howerver, many people use kfree directly which will\nresult in kernel BUG.  In order to fix this without fixing every call\nsite, just leak a couple of bytes in such corner case.\n\n## Affected\n\n- `Linux >= ebff7d8f270d045338d9f4796014f4db429a17f9 < 3379a60f6bb4afcd9c456e340ac525ae649d3ce7`\n- `Linux >= ebff7d8f270d045338d9f4796014f4db429a17f9 < a9e88c2618d228d7a4e7e515cf30dc0d0d813f27`\n- `Linux >= ebff7d8f270d045338d9f4796014f4db429a17f9 < d7faa04a44a0c37ac3d222fa8e0bdcbfcee9c0c8`\n- `Linux >= ebff7d8f270d045338d9f4796014f4db429a17f9 < ab86020070999e758ce2e60c4348f20bf7ddba56`\n- `Linux >= ebff7d8f270d045338d9f4796014f4db429a17f9 < 0cbcc92917c5de80f15c24d033566539ad696892`\n- `Linux 3.10`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}