CVE-2026-89947clk: meson: align gxbb_32k_clk_sel number of parents with actual count
- 8.0HighCVSS 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: clk: meson: align gxbb_32k_clk_sel number of parents with actual count The following out-of-bounds read has been observed by Christian on a GXBB WeTek Hub: ================================================================== BUG: KASAN: global-out-of-bounds in __clk_register+0x1b70/0x2418 Read of size 8 at addr ffffd66320cf88e0 by task swapper/0/1 CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 7.0.0-rc5 #1 PREEMPT Hardware name: WeTek Hub (DT) Call trace: show_stack+0x14/0x20 (C) dump_stack_lvl+0x74/0x94 print_report+0x164/0x4b0 kasan_report+0x98/0xd8 __asan_report_load8_noabort+0x1c/0x24 __clk_register+0x1b70/0x2418 devm_clk_hw_register+0x74/0x15c meson_clkc_init+0xd4/0x20c meson_clkc_syscon_probe+0x5c/0x94 platform_probe+0xbc/0x17c really_probe+0x184/0x844 __driver_probe_device+0x154/0x35c driver_probe_device+0x60/0x188 __driver_attach+0x168/0x4a0 bus_for_each_dev+0xec/0x180 driver_attach+0x38/0x58 bus_add_driver+0x238/0x4c0 driver_register+0x150/0x388 __platform_driver_register+0x54/0x7c gxbb_clkc_driver_init+0x18/0x20 do_one_initcall+0xb8/0x340 kernel_init_freeable+0x49c/0x52c kernel_init+0x24/0x148 ret_from_fork+0x10/0x20 The buggy address belongs to the variable: gxbb_32k_clk_parents+0x60/0x400 The buggy address belongs to a vmalloc virtual mapping The buggy address belongs to the physical page: Memory state around the buggy address: ffffd66320cf8780: 00 00 00 00 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9 ffffd66320cf8800: 00 04 f9 f9 f9 f9 f9 f9 00 04 f9 f9 f9 f9 f9 f9 >ffffd66320cf8880: 00 00 00 00 00 00 00 00 00 00 00 00 f9 f9 f9 f9 ^ ffffd66320cf8900: 00 01 f9 f9 f9 f9 f9 f9 00 06 f9 f9 f9 f9 f9 f9 ffffd66320cf8980: 00 00 02 f9 f9 f9 f9 f9 00 00 02 f9 f9 f9 f9 f9 ================================================================== Commit 7915d7d5407c ("clk: amlogic: gxbb: drop non existing 32k clock parent") dropped a non-existing clock parent from the gxbb_32k_clk_sel mux but didn't adjust the hard-coded num_parents field. Fix the actual number of parents of that mux by using ARRAY_SIZE instead (avoiding similar problems in future).
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 33 days later
· 33 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 | High8.0 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H |
| NVDNVD · Received | 3.1 | High8.0 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 92% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.0.
Affected products
- affected b9778cd803b330b8d7a9b523743c35093454b77f – < c86214e6178c38a0eff39110a4e92b824f5dd403
- affected f95e0f36e592e17a24ba4f56c355946448f84291 – < 8b2f7a411e7ceaef268355c2150c22ee3f509c3b
- affected 6ded8c22af4700bbf91da24ac025f9d05b879267 – < 1e509a6707d2fd9da79bdfa24742661b34562bfd
- affected 7061afacc89dec3f02f7412653b83f148a0c646b – < 404079d124d75a5da16322acc53d3ffc50b4ec68
- affected 4d32504f7ae951600e216aac4e04c81b02421a9d – < f6ff0e6995dbff5cb145d7795c8f0af9c168094a
- affected 7915d7d5407c026fa9343befb4d3343f7a345f97 – < 4582949b7badcb91bb537ca522d69b8a35131e72
- affected 7915d7d5407c026fa9343befb4d3343f7a345f97 – < bf85bd6e550c17ffa585606fcc18eb5b7c95bbce
- affected 7915d7d5407c026fa9343befb4d3343f7a345f97 – < 628b6fee9fca292f12d07f0f1bcf1edefa949d81
- affected 450a1d9eac98886c7d19586dd10e72a4eaf8e1bc
- affected f18b09c998002ed6a67d1a235f3941a2662f1036
- affected 1eb7a2f3e25075b2dc9b10c94616b066f80e79ee
- affected 5.10.236 – < 5.10.270
- affected 5.15.180 – < 5.15.221
- affected 6.1.134 – < 6.1.188
- affected 6.6.87 – < 6.6.157
- affected 6.12.23 – < 6.12.110
- affected 5.4.292 – < 5.5
- affected 6.13.11 – < 6.14
- affected 6.14.2 – < 6.15
- affected 6.15
- unaffected < 6.15
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/c86214e6178c38a0eff39110a4e92b824f5dd403 (opens in a new tab)
- https://git.kernel.org/stable/c/8b2f7a411e7ceaef268355c2150c22ee3f509c3b (opens in a new tab)
- https://git.kernel.org/stable/c/1e509a6707d2fd9da79bdfa24742661b34562bfd (opens in a new tab)
- https://git.kernel.org/stable/c/404079d124d75a5da16322acc53d3ffc50b4ec68 (opens in a new tab)
- https://git.kernel.org/stable/c/f6ff0e6995dbff5cb145d7795c8f0af9c168094a (opens in a new tab)
- https://git.kernel.org/stable/c/4582949b7badcb91bb537ca522d69b8a35131e72 (opens in a new tab)
- https://git.kernel.org/stable/c/bf85bd6e550c17ffa585606fcc18eb5b7c95bbce (opens in a new tab)
- https://git.kernel.org/stable/c/628b6fee9fca292f12d07f0f1bcf1edefa949d81 (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-2026-80547 (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-2026-89947)Record last updated .