CVE-2026-90137platform/x86: hp-bioscfg: fix password encoding bounds check
- 7.7HighCVSS base score
- 0.18%Exploitation in 30 daysEPSS · top 92% 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: platform/x86: hp-bioscfg: fix password encoding bounds check The password PSWD_ENCODINGS parser reads password_obj[elem + pos_values] while copying the supported password encodings from the ACPI package. The outer loop only guarantees that elem is within password_obj_count. The encoding count is bounded by MAX_ENCODINGS_SIZE, but that does not guarantee that the ACPI package contains enough entries for all elem + pos_values accesses. A malformed package can therefore declare a non-zero encoding count without providing enough string objects, causing the parser to read past the ACPI package array and pass an out-of-bounds string pointer and length to hp_convert_hexstr_to_str(). Add the same computed-index bounds check used by the other offset-based package parsing loops before reading password_obj[elem + pos_values].
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 32 days later
· 32 days 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 | High7.7 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| NVDNVD · Received | 3.1 | High7.7 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 92% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.7.
Affected products
- affected 8646a3b5ee3a5b384a22a721f37c24274d974045 – < c224759555a13735b0d67561d818cefe00c3309a
- affected 8646a3b5ee3a5b384a22a721f37c24274d974045 – < 59fe8491ddaa03a510b352552e6ee291e7ce45d3
- affected 8646a3b5ee3a5b384a22a721f37c24274d974045 – < ace1ba5fca0ab775b3641e154bcbc3ccde26a71a
- affected 8646a3b5ee3a5b384a22a721f37c24274d974045 – < 8a7499b8fd34438c1b11964e0e7ef5bd590fec92
- affected 8646a3b5ee3a5b384a22a721f37c24274d974045 – < e213939ed9e6e6badf7aa48c4c8dd9a9cdf00615
- affected 6.6
- unaffected < 6.6
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/c224759555a13735b0d67561d818cefe00c3309a (opens in a new tab)
- https://git.kernel.org/stable/c/59fe8491ddaa03a510b352552e6ee291e7ce45d3 (opens in a new tab)
- https://git.kernel.org/stable/c/ace1ba5fca0ab775b3641e154bcbc3ccde26a71a (opens in a new tab)
- https://git.kernel.org/stable/c/8a7499b8fd34438c1b11964e0e7ef5bd590fec92 (opens in a new tab)
- https://git.kernel.org/stable/c/e213939ed9e6e6badf7aa48c4c8dd9a9cdf00615 (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-2026-81730 (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-2026-90137)Record last updated .