CVE-2025-39788scsi: ufs: exynos: Fix programming of HCI_UTRL_NEXUS_TYPE
- 7.8HighCVSS 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: scsi: ufs: exynos: Fix programming of HCI_UTRL_NEXUS_TYPE On Google gs101, the number of UTP transfer request slots (nutrs) is 32, and in this case the driver ends up programming the UTRL_NEXUS_TYPE incorrectly as 0. This is because the left hand side of the shift is 1, which is of type int, i.e. 31 bits wide. Shifting by more than that width results in undefined behaviour. Fix this by switching to the BIT() macro, which applies correct type casting as required. This ensures the correct value is written to UTRL_NEXUS_TYPE (0xffffffff on gs101), and it also fixes a UBSAN shift warning: UBSAN: shift-out-of-bounds in drivers/ufs/host/ufs-exynos.c:1113:21 shift exponent 32 is too large for 32-bit type 'int' For consistency, apply the same change to the nutmrs / UTMRL_NEXUS_TYPE write.
Timeline
ID reserved
By Linux
- 5 months later
· 5 months later
Published
- 8 months later
· 8 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 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 92% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 55f4b1f73631a0817717fe6e98517de51b4c3527 – < 01510a9e8222f11cce064410f3c2fcf0756c0a08
- affected 55f4b1f73631a0817717fe6e98517de51b4c3527 – < 098b2c8ee208c77126839047b9e6e1925bb35baa
- affected 55f4b1f73631a0817717fe6e98517de51b4c3527 – < c1f025da8f370a015e412b55cbcc583f91de8316
- affected 55f4b1f73631a0817717fe6e98517de51b4c3527 – < 6d53b2a134da77eb7fe65c5c7c7a3c193539a78a
- affected 55f4b1f73631a0817717fe6e98517de51b4c3527 – < dc8fb963742f1a38d284946638f9358bdaa0ddee
- affected 55f4b1f73631a0817717fe6e98517de51b4c3527 – < 5b9f1ef293428ea9c0871d96fcec2a87c4445832
- affected 55f4b1f73631a0817717fe6e98517de51b4c3527 – < 01aad16c2257ab8ff33b152b972c9f2e1af47912
- affected 5.9
- unaffected < 5.9
- unaffected 5.10.241 – ≤ 5.10.*
- unaffected 5.15.190 – ≤ 5.15.*
- unaffected 6.1.149 – ≤ 6.1.*
- unaffected 6.6.103 – ≤ 6.6.*
- unaffected 6.12.44 – ≤ 6.12.*
- unaffected 6.16.4 – ≤ 6.16.*
- unaffected 6.17 – ≤ *
References
References10
- https://git.kernel.org/stable/c/01510a9e8222f11cce064410f3c2fcf0756c0a08 (opens in a new tab)
- https://git.kernel.org/stable/c/098b2c8ee208c77126839047b9e6e1925bb35baa (opens in a new tab)
- https://git.kernel.org/stable/c/c1f025da8f370a015e412b55cbcc583f91de8316 (opens in a new tab)
- https://git.kernel.org/stable/c/6d53b2a134da77eb7fe65c5c7c7a3c193539a78a (opens in a new tab)
- https://git.kernel.org/stable/c/dc8fb963742f1a38d284946638f9358bdaa0ddee (opens in a new tab)
- https://git.kernel.org/stable/c/5b9f1ef293428ea9c0871d96fcec2a87c4445832 (opens in a new tab)
- https://git.kernel.org/stable/c/01aad16c2257ab8ff33b152b972c9f2e1af47912 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-032379.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-2025-28925 (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-2025-39788)Record last updated .