CVE-2023-53840usb: early: xhci-dbc: Fix a potential out-of-bound memory access
- —Not scoredno CVSS score yet
- 0.26%Exploitation in 30 daysEPSS · top 82% 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: usb: early: xhci-dbc: Fix a potential out-of-bound memory access If xdbc_bulk_write() fails, the values in 'buf' can be anything. So the string is not guaranteed to be NULL terminated when xdbc_trace() is called. Reserve an extra byte, which will be zeroed automatically because 'buf' is a static variable, in order to avoid troubles, should it happen.
Timeline
ID reserved
By Linux
Published
- 5 months later
· 5 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.26% · top 82% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0 – < e8fb0f13e45cf361fd06593d3cb2d89915cd3bd0
- affected aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0 – < 351c8d8650d1ccc006255fa01f98b6c6496a02e5
- affected aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0 – < df7c8aba7309f4dc55df94e06b67f576c0f52406
- affected aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0 – < a4a97ab3db5c081eb6e7dba91306adefb461e0bd
- affected 4.12
- unaffected < 4.12
- unaffected 5.15.99 – ≤ 5.15.*
- unaffected 6.1.16 – ≤ 6.1.*
- unaffected 6.2.3 – ≤ 6.2.*
- unaffected 6.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/e8fb0f13e45cf361fd06593d3cb2d89915cd3bd0 (opens in a new tab)
- https://git.kernel.org/stable/c/351c8d8650d1ccc006255fa01f98b6c6496a02e5 (opens in a new tab)
- https://git.kernel.org/stable/c/df7c8aba7309f4dc55df94e06b67f576c0f52406 (opens in a new tab)
- https://git.kernel.org/stable/c/a4a97ab3db5c081eb6e7dba91306adefb461e0bd (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-2023-60156 (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-2023-53840)Record last updated .