CVE-2022-49190

kernel/resource: fix kfree() of bootmem memory again

MEDIUM

5.5

CVSS Score

Published: February 26, 2025 at 01:55 AM UTC

Updated: June 17, 2026 at 05:17 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.3%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.10 ≤ v < 5.10.2373.10 ≤ v < 5.15.333.10 ≤ v < 5.16.193.10 ≤ v < 5.17.23.10 ≤ v < 5.185.16 ≤ v < 5.16.195.17 ≤ v < 5.17.23.10ebff7d8f270d045338d9f4796014f4db429a17f9

Vendor states this is fixed in 0cbcc92917c5de80f15c24d033566539ad696892 (fixed)

Vendor states this is fixed in 3379a60f6bb4afcd9c456e340ac525ae649d3ce7 (fixed)

Vendor states this is fixed in a9e88c2618d228d7a4e7e515cf30dc0d0d813f27 (fixed)

Vendor states this is fixed in ab86020070999e758ce2e60c4348f20bf7ddba56 (fixed)

Vendor states this is fixed in d7faa04a44a0c37ac3d222fa8e0bdcbfcee9c0c8 (fixed)

Vendor states this is fixed in 3.10 (unaffected)

Vendor states this is fixed in 5.10.237 (unaffected)

Vendor states this is fixed in 5.15.33 (unaffected)

Vendor states this is fixed in 5.16.19 (unaffected)

Vendor states this is fixed in 5.17.2 (unaffected)

Vendor states this is fixed in 5.18 (unaffected)