{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50239","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-09-15T13:58:00.971Z","datePublished":"2025-09-15T14:01:43.916Z","dateUpdated":"2026-05-11T19:15:27.844Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:15:27.844Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: qcom: fix writes in read-only memory region\n\nThis commit fixes a kernel oops because of a write in some read-only memory:\n\n\t[    9.068287] Unable to handle kernel write to read-only memory at virtual address ffff800009240ad8\n\t..snip..\n\t[    9.138790] Internal error: Oops: 9600004f [#1] PREEMPT SMP\n\t..snip..\n\t[    9.269161] Call trace:\n\t[    9.276271]  __memcpy+0x5c/0x230\n\t[    9.278531]  snprintf+0x58/0x80\n\t[    9.282002]  qcom_cpufreq_msm8939_name_version+0xb4/0x190\n\t[    9.284869]  qcom_cpufreq_probe+0xc8/0x39c\n\t..snip..\n\nThe following line defines a pointer that point to a char buffer stored\nin read-only memory:\n\n\tchar *pvs_name = \"speedXX-pvsXX-vXX\";\n\nThis pointer is meant to hold a template \"speedXX-pvsXX-vXX\" where the\nXX values get overridden by the qcom_cpufreq_krait_name_version function. Since\nthe template is actually stored in read-only memory, when the function\nexecutes the following call we get an oops:\n\n\tsnprintf(*pvs_name, sizeof(\"speedXX-pvsXX-vXX\"), \"speed%d-pvs%d-v%d\",\n\t\t speed, pvs, pvs_ver);\n\nTo fix this issue, we instead store the template name onto the stack by\nusing the following syntax:\n\n\tchar pvs_name_buffer[] = \"speedXX-pvsXX-vXX\";\n\nBecause the `pvs_name` needs to be able to be assigned to NULL, the\ntemplate buffer is stored in the pvs_name_buffer and not under the\npvs_name variable."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/cpufreq/qcom-cpufreq-nvmem.c"],"versions":[{"version":"a8811ec764f95a04ba82f6f457e28c5e9e36e36b","lessThan":"794ded0bc461287a268bed21fea2eebb6e5d232c","status":"affected","versionType":"git"},{"version":"a8811ec764f95a04ba82f6f457e28c5e9e36e36b","lessThan":"14d260f94ff89543597ffea13db8b277a810e08e","status":"affected","versionType":"git"},{"version":"a8811ec764f95a04ba82f6f457e28c5e9e36e36b","lessThan":"b74ee4e301ca01e431e240c046173332966e2431","status":"affected","versionType":"git"},{"version":"a8811ec764f95a04ba82f6f457e28c5e9e36e36b","lessThan":"01039fb8e90c9cb684430414bff70cea9eb168c5","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/cpufreq/qcom-cpufreq-nvmem.c"],"versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","status":"unaffected","versionType":"semver"},{"version":"5.10.152","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.76","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.0.6","lessThanOrEqual":"6.0.*","status":"unaffected","versionType":"semver"},{"version":"6.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.10.152"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.15.76"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.0.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/794ded0bc461287a268bed21fea2eebb6e5d232c"},{"url":"https://git.kernel.org/stable/c/14d260f94ff89543597ffea13db8b277a810e08e"},{"url":"https://git.kernel.org/stable/c/b74ee4e301ca01e431e240c046173332966e2431"},{"url":"https://git.kernel.org/stable/c/01039fb8e90c9cb684430414bff70cea9eb168c5"}],"title":"cpufreq: qcom: fix writes in read-only memory region","x_generator":{"engine":"bippy-1.2.0"}}}}