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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-90295
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:26 UTC
Updated2026-10-19 09:19:23 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected b4573d1d657aae28bedf3a9a1f5367e09c80d1d6 263a35331169390f7f9ccb51d74e668610199af4 git Not specified
CNA Linux Linux affected b4573d1d657aae28bedf3a9a1f5367e09c80d1d6 49f2f9b1d0cc76cf221306fc707703205bd27073 git Not specified
CNA Linux Linux affected b4573d1d657aae28bedf3a9a1f5367e09c80d1d6 c5135bc34ea37e9d19f758e61ac44415afb3891a git Not specified
CNA Linux Linux affected b4573d1d657aae28bedf3a9a1f5367e09c80d1d6 55864b26c22cbd4b2e0d36154a8c35931c2e133b git Not specified
CNA Linux Linux affected b4573d1d657aae28bedf3a9a1f5367e09c80d1d6 b166bb79b7ef36b4f1d6d1f40d1a72b2eb0a56b9 git Not specified
CNA Linux Linux affected b4573d1d657aae28bedf3a9a1f5367e09c80d1d6 aaa66e60c0e21d19993a95bc3718dc29eb2d3192 git Not specified
CNA Linux Linux affected b4573d1d657aae28bedf3a9a1f5367e09c80d1d6 55516986a3d81325c84f2d4ae9cd03116bc63599 git Not specified
CNA Linux Linux affected b4573d1d657aae28bedf3a9a1f5367e09c80d1d6 8c3afcf27fa4582c1ab912503dc8a4ebb8dc0f82 git Not specified
CNA Linux Linux affected 3.14 Not specified
CNA Linux Linux unaffected 3.14 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/55864b26c22cbd4b2e0d36154a8c35931c2e133b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c5135bc34ea37e9d19f758e61ac44415afb3891a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8c3afcf27fa4582c1ab912503dc8a4ebb8dc0f82 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b166bb79b7ef36b4f1d6d1f40d1a72b2eb0a56b9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/49f2f9b1d0cc76cf221306fc707703205bd27073 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/263a35331169390f7f9ccb51d74e668610199af4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/aaa66e60c0e21d19993a95bc3718dc29eb2d3192 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/55516986a3d81325c84f2d4ae9cd03116bc63599 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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