CVE-2022-49190

Summary

In the Linux kernel, the following vulnerability has been resolved: kernel/resource: fix kfree() of bootmem memory again Since commit ebff7d8f270d ("mem hotunplug: fix kfree() of bootmem memory"), we could get a resource allocated during boot via alloc_resource(). And it's required to release the resource using free_resource(). Howerver, many people use kfree directly which will result in kernel BUG. In order to fix this without fixing every call site, just leak a couple of bytes in such corner case.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/0cbcc92917c5de80f15c24d033566539ad696892 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/0cbcc92917c5de80f15c24d033566539ad696892Patch
• https://git.kernel.org/stable/c/a9e88c2618d228d7a4e7e515cf30dc0d0d813f27Patch
• https://git.kernel.org/stable/c/ab86020070999e758ce2e60c4348f20bf7ddba56Patch
• https://git.kernel.org/stable/c/d7faa04a44a0c37ac3d222fa8e0bdcbfcee9c0c8Patch
• https://git.kernel.org/stable/c/3379a60f6bb4afcd9c456e340ac525ae649d3ce7
• https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html