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CVE-2021-47432lib/generic-radix-tree.c: Don't overflow in peek()
- 5.5MediumCVSS base score
- 0.25%Exploitation in 30 daysEPSS · top 83% 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: lib/generic-radix-tree.c: Don't overflow in peek() When we started spreading new inode numbers throughout most of the 64 bit inode space, that triggered some corner case bugs, in particular some integer overflows related to the radix tree code. Oops.
Timeline
ID reserved
By Linux
Published
- 24 months later
· 24 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 |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 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)
- 0.25% · top 83% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected ba20ba2e3743bac786dff777954c11930256075e – < 784d01f9bbc282abb0c5ade5beb98a87f50343ac
- affected ba20ba2e3743bac786dff777954c11930256075e – < ec298b958cb0c40d70c68079da933c8f31c5134c
- affected ba20ba2e3743bac786dff777954c11930256075e – < aa7f1827953100cdde0795289a80c6c077bfe437
- affected ba20ba2e3743bac786dff777954c11930256075e – < 9492261ff2460252cf2d8de89cdf854c7e2b28a0
- affected 5.1
- unaffected < 5.1
- unaffected 6.1.64 – ≤ 6.1.*
- unaffected 6.5.13 – ≤ 6.5.*
- unaffected 6.6.3 – ≤ 6.6.*
- unaffected 6.7 – ≤ *
References
References4
- https://git.kernel.org/stable/c/784d01f9bbc282abb0c5ade5beb98a87f50343ac (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/ec298b958cb0c40d70c68079da933c8f31c5134c (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/aa7f1827953100cdde0795289a80c6c077bfe437 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/9492261ff2460252cf2d8de89cdf854c7e2b28a0 (opens in a new tab)x_transferred
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-2021-34437 (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-2021-47432)Record last updated .