CVE-2022-49190kernel/resource: fix kfree() of bootmem memory again
- 5.5MediumCVSS base score
- 0.27%Exploitation in 30 daysEPSS · top 81% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
Published
- 21 months later
· 21 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 81% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected ebff7d8f270d045338d9f4796014f4db429a17f9 – < 3379a60f6bb4afcd9c456e340ac525ae649d3ce7
- affected ebff7d8f270d045338d9f4796014f4db429a17f9 – < a9e88c2618d228d7a4e7e515cf30dc0d0d813f27
- affected ebff7d8f270d045338d9f4796014f4db429a17f9 – < d7faa04a44a0c37ac3d222fa8e0bdcbfcee9c0c8
- affected ebff7d8f270d045338d9f4796014f4db429a17f9 – < ab86020070999e758ce2e60c4348f20bf7ddba56
- affected ebff7d8f270d045338d9f4796014f4db429a17f9 – < 0cbcc92917c5de80f15c24d033566539ad696892
- affected 3.10
- unaffected < 3.10
- unaffected 5.10.237 – ≤ 5.10.*
- unaffected 5.15.33 – ≤ 5.15.*
- unaffected 5.16.19 – ≤ 5.16.*
- unaffected 5.17.2 – ≤ 5.17.*
- unaffected 5.18 – ≤ *
References
References6
- https://git.kernel.org/stable/c/3379a60f6bb4afcd9c456e340ac525ae649d3ce7 (opens in a new tab)
- https://git.kernel.org/stable/c/a9e88c2618d228d7a4e7e515cf30dc0d0d813f27 (opens in a new tab)
- https://git.kernel.org/stable/c/d7faa04a44a0c37ac3d222fa8e0bdcbfcee9c0c8 (opens in a new tab)
- https://git.kernel.org/stable/c/ab86020070999e758ce2e60c4348f20bf7ddba56 (opens in a new tab)
- https://git.kernel.org/stable/c/0cbcc92917c5de80f15c24d033566539ad696892 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-55036 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-49190)Record last updated .