CVE-2025-40317regmap: slimbus: fix bus_context pointer in regmap init calls
- 7.8HighCVSS base score
- 0.15%Exploitation in 30 daysEPSS · top 95% 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: regmap: slimbus: fix bus_context pointer in regmap init calls Commit 4e65bda8273c ("ASoC: wcd934x: fix error handling in wcd934x_codec_parse_data()") revealed the problem in the slimbus regmap. That commit breaks audio playback, for instance, on sdm845 Thundercomm Dragonboard 845c board: Unable to handle kernel paging request at virtual address ffff8000847cbad4 ... CPU: 5 UID: 0 PID: 776 Comm: aplay Not tainted 6.18.0-rc1-00028-g7ea30958b305 #11 PREEMPT Hardware name: Thundercomm Dragonboard 845c (DT) ... Call trace: slim_xfer_msg+0x24/0x1ac [slimbus] (P) slim_read+0x48/0x74 [slimbus] regmap_slimbus_read+0x18/0x24 [regmap_slimbus] _regmap_raw_read+0xe8/0x174 _regmap_bus_read+0x44/0x80 _regmap_read+0x60/0xd8 _regmap_update_bits+0xf4/0x140 _regmap_select_page+0xa8/0x124 _regmap_raw_write_impl+0x3b8/0x65c _regmap_bus_raw_write+0x60/0x80 _regmap_write+0x58/0xc0 regmap_write+0x4c/0x80 wcd934x_hw_params+0x494/0x8b8 [snd_soc_wcd934x] snd_soc_dai_hw_params+0x3c/0x7c [snd_soc_core] __soc_pcm_hw_params+0x22c/0x634 [snd_soc_core] dpcm_be_dai_hw_params+0x1d4/0x38c [snd_soc_core] dpcm_fe_dai_hw_params+0x9c/0x17c [snd_soc_core] snd_pcm_hw_params+0x124/0x464 [snd_pcm] snd_pcm_common_ioctl+0x110c/0x1820 [snd_pcm] snd_pcm_ioctl+0x34/0x4c [snd_pcm] __arm64_sys_ioctl+0xac/0x104 invoke_syscall+0x48/0x104 el0_svc_common.constprop.0+0x40/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x34/0xec el0t_64_sync_handler+0xa0/0xf0 el0t_64_sync+0x198/0x19c The __devm_regmap_init_slimbus() started to be used instead of __regmap_init_slimbus() after the commit mentioned above and turns out the incorrect bus_context pointer (3rd argument) was used in __devm_regmap_init_slimbus(). It should be just "slimbus" (which is equal to &slimbus->dev). Correct it. The wcd934x codec seems to be the only or the first user of devm_regmap_init_slimbus() but we should fix it till the point where __devm_regmap_init_slimbus() was introduced therefore two "Fixes" tags. While at this, also correct the same argument in __regmap_init_slimbus().
Timeline
ID reserved
By Linux
- 8 months later
· 8 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 |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 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)
- 0.15% · top 95% of all CVEs (14 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 7d6f7fb053ad543da74119df3c4cd7bb46220471 – < c0f05129e5734ff3fd14b2c242709314d9ca5433
- affected 7d6f7fb053ad543da74119df3c4cd7bb46220471 – < 02d3041caaa3fe4dd69e5a8afd1ac6b918ddc6a1
- affected 7d6f7fb053ad543da74119df3c4cd7bb46220471 – < d979639f099c6e51f06ce4dd8d8e56364d6c17ba
- affected 7d6f7fb053ad543da74119df3c4cd7bb46220471 – < 8143e4075d131c528540417a51966f6697be14eb
- affected 7d6f7fb053ad543da74119df3c4cd7bb46220471 – < 2664bfd8969d1c43dcbe3ea313f130dfa6b74f4c
- affected 7d6f7fb053ad543da74119df3c4cd7bb46220471 – < a16e92f8d7dc7371e68f17a9926cb92d2244be7b
- affected 7d6f7fb053ad543da74119df3c4cd7bb46220471 – < b65f3303349eaee333e47d2a99045aa12fa0c3a7
- affected 7d6f7fb053ad543da74119df3c4cd7bb46220471 – < 434f7349a1f00618a620b316f091bd13a12bc8d2
- affected 4.16
- unaffected < 4.16
- unaffected 5.4.302 – ≤ 5.4.*
- unaffected 5.10.247 – ≤ 5.10.*
- unaffected 5.15.197 – ≤ 5.15.*
- unaffected 6.1.159 – ≤ 6.1.*
- unaffected 6.6.117 – ≤ 6.6.*
- unaffected 6.12.58 – ≤ 6.12.*
- unaffected 6.17.8 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References8
- https://git.kernel.org/stable/c/c0f05129e5734ff3fd14b2c242709314d9ca5433 (opens in a new tab)
- https://git.kernel.org/stable/c/02d3041caaa3fe4dd69e5a8afd1ac6b918ddc6a1 (opens in a new tab)
- https://git.kernel.org/stable/c/d979639f099c6e51f06ce4dd8d8e56364d6c17ba (opens in a new tab)
- https://git.kernel.org/stable/c/8143e4075d131c528540417a51966f6697be14eb (opens in a new tab)
- https://git.kernel.org/stable/c/2664bfd8969d1c43dcbe3ea313f130dfa6b74f4c (opens in a new tab)
- https://git.kernel.org/stable/c/a16e92f8d7dc7371e68f17a9926cb92d2244be7b (opens in a new tab)
- https://git.kernel.org/stable/c/b65f3303349eaee333e47d2a99045aa12fa0c3a7 (opens in a new tab)
- https://git.kernel.org/stable/c/434f7349a1f00618a620b316f091bd13a12bc8d2 (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-2025-201628 (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-2025-40317)Record last updated .