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CVE-2026-90295

cpufreq: imx6q: fix out-of-bounds write when probed more than once

In the Linux kernel, the following vulnerability has been resolved:

cpufreq: imx6q: fix out-of-bounds write when probed more than once

imx6_soc_volt is allocated fresh on every probe, sized to the number of
ARM OPPs:

	imx6_soc_volt = devm_kcalloc(cpu_dev, num, sizeof(*imx6_soc_volt),
				     GFP_KERNEL);

but it is filled through soc_opp_count, which has static storage and is
never reset. A second bind after an unbind keeps indexing from where the
first one stopped, and writes past the end of the new array.

Unbinding and rebinding the driver on qemu's mcimx6ul-evk, under KASAN:

  BUG: KASAN: slab-out-of-bounds in imx6q_cpufreq_probe+0x3b0/0xa34
  Write of size 4 at addr c5e90480 by task binder/73
   imx6q_cpufreq_probe from platform_probe+0x88/0xe4
   platform_probe from really_probe+0x108/0x384
   bind_store from kernfs_fop_write_iter+0x1b4/0x28c

The write lands one u32 past the end of the allocation.

soc_opp_count is only read a few lines below the loop that fills it, so it
never needed static storage. Make it a local.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version < 263a35331169390f7f9ccb51d74e668610199af4
Status affected
Version b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version < 49f2f9b1d0cc76cf221306fc707703205bd27073
Status affected
Version b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version < c5135bc34ea37e9d19f758e61ac44415afb3891a
Status affected
Version b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version < 55864b26c22cbd4b2e0d36154a8c35931c2e133b
Status affected
Version b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version < b166bb79b7ef36b4f1d6d1f40d1a72b2eb0a56b9
Status affected
Version b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version < aaa66e60c0e21d19993a95bc3718dc29eb2d3192
Status affected
Version b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version < 55516986a3d81325c84f2d4ae9cd03116bc63599
Status affected
Version b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version < 8c3afcf27fa4582c1ab912503dc8a4ebb8dc0f82
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 3.14
Status affected
Version 0
Version < 3.14
Status unaffected
Version <= 5.10.*
Version 5.10.270
Status unaffected
Version <= 5.15.*
Version 5.15.221
Status unaffected
Version <= 6.1.*
Version 6.1.188
Status unaffected
Version <= 6.6.*
Version 6.6.157
Status unaffected
Version <= 6.12.*
Version 6.12.110
Status unaffected
Version <= 6.18.*
Version 6.18.52
Status unaffected
Version <= 7.2.*
Version 7.2.6
Status unaffected
Version <= *
Version 7.3-rc1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.21% 0.117
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/263a35331169390f7f9ccb51d74e668610199af4
https://git.kernel.org/stable/c/49f2f9b1d0cc76cf221306fc707703205bd27073
https://git.kernel.org/stable/c/c5135bc34ea37e9d19f758e61ac44415afb3891a
https://git.kernel.org/stable/c/55864b26c22cbd4b2e0d36154a8c35931c2e133b
https://git.kernel.org/stable/c/b166bb79b7ef36b4f1d6d1f40d1a72b2eb0a56b9
https://git.kernel.org/stable/c/aaa66e60c0e21d19993a95bc3718dc29eb2d3192
https://git.kernel.org/stable/c/55516986a3d81325c84f2d4ae9cd03116bc63599
https://git.kernel.org/stable/c/8c3afcf27fa4582c1ab912503dc8a4ebb8dc0f82