CVE-2022-49743ovl: Use "buf" flexible array for memcpy() destination
- 7.5HighCVSS base score
- 0.45%Exploitation in 30 daysEPSS · top 60% 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: ovl: Use "buf" flexible array for memcpy() destination The "buf" flexible array needs to be the memcpy() destination to avoid false positive run-time warning from the recent FORTIFY_SOURCE hardening: memcpy: detected field-spanning write (size 93) of single field "&fh->fb" at fs/overlayfs/export.c:799 (size 21)
Timeline
ID reserved
By Linux
Published
- 19 months later
· 19 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 |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 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)
- 0.45% · top 60% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 – < 012cdef22000f3104e4fa8224ad29fde509b8caf
- affected cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 – < a77141a06367825d639ac51b04703d551163e36c
- affected cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 – < 07a96977b2f462337a9121302de64277b8747ab1
- affected cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 – < cf8aa9bf97cadf85745506c6a3e244b22c268d63
- affected 5.5
- unaffected < 5.5
- unaffected 5.10.248 – ≤ 5.10.*
- unaffected 5.15.93 – ≤ 5.15.*
- unaffected 6.1.11 – ≤ 6.1.*
- unaffected 6.2 – ≤ *
References
References4
- https://git.kernel.org/stable/c/012cdef22000f3104e4fa8224ad29fde509b8caf (opens in a new tab)
- https://git.kernel.org/stable/c/a77141a06367825d639ac51b04703d551163e36c (opens in a new tab)
- https://git.kernel.org/stable/c/07a96977b2f462337a9121302de64277b8747ab1 (opens in a new tab)
- https://git.kernel.org/stable/c/cf8aa9bf97cadf85745506c6a3e244b22c268d63 (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-2022-55180 (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-2022-49743)Record last updated .