{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50206","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-06-18T10:57:27.428Z","datePublished":"2025-06-18T11:03:46.505Z","dateUpdated":"2026-05-11T19:14:51.053Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:14:51.053Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: fix oops in concurrently setting insn_emulation sysctls\n\nemulation_proc_handler() changes table->data for proc_dointvec_minmax\nand can generate the following Oops if called concurrently with itself:\n\n | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010\n | Internal error: Oops: 96000006 [#1] SMP\n | Call trace:\n | update_insn_emulation_mode+0xc0/0x148\n | emulation_proc_handler+0x64/0xb8\n | proc_sys_call_handler+0x9c/0xf8\n | proc_sys_write+0x18/0x20\n | __vfs_write+0x20/0x48\n | vfs_write+0xe4/0x1d0\n | ksys_write+0x70/0xf8\n | __arm64_sys_write+0x20/0x28\n | el0_svc_common.constprop.0+0x7c/0x1c0\n | el0_svc_handler+0x2c/0xa0\n | el0_svc+0x8/0x200\n\nTo fix this issue, keep the table->data as &insn->current_mode and\nuse container_of() to retrieve the insn pointer. Another mutex is\nused to protect against the current_mode update but not for retrieving\ninsn_emulation as table->data is no longer changing."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/kernel/armv8_deprecated.c"],"versions":[{"version":"0be7320a635c2e434e8b67e0e9474a85ceb421c4","lessThan":"9d5fec6ba2e4117d196a8259ab54615ffe562460","status":"affected","versionType":"git"},{"version":"0be7320a635c2e434e8b67e0e9474a85ceb421c4","lessThan":"b51881b1da57fe9877125dfdd0aac5172958fcfd","status":"affected","versionType":"git"},{"version":"0be7320a635c2e434e8b67e0e9474a85ceb421c4","lessThan":"04549063d5701976034d8c2bfda3d3a8cbf0409f","status":"affected","versionType":"git"},{"version":"0be7320a635c2e434e8b67e0e9474a85ceb421c4","lessThan":"353b4673d01c512303c45cf2346f630cda73b5c9","status":"affected","versionType":"git"},{"version":"0be7320a635c2e434e8b67e0e9474a85ceb421c4","lessThan":"cc69ef95988b9ef2fc730ec452a7441efb90ef5e","status":"affected","versionType":"git"},{"version":"0be7320a635c2e434e8b67e0e9474a85ceb421c4","lessThan":"6a2fd114678d7fc1b5a0f8865ae98f1c17787455","status":"affected","versionType":"git"},{"version":"0be7320a635c2e434e8b67e0e9474a85ceb421c4","lessThan":"07022e07017ee5540f5559b0aeb916e8383c1e1a","status":"affected","versionType":"git"},{"version":"0be7320a635c2e434e8b67e0e9474a85ceb421c4","lessThan":"af483947d472eccb79e42059276c4deed76f99a6","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/kernel/armv8_deprecated.c"],"versions":[{"version":"3.7","status":"affected"},{"version":"0","lessThan":"3.7","status":"unaffected","versionType":"semver"},{"version":"4.14.291","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.256","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.211","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.137","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.61","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.18.18","lessThanOrEqual":"5.18.*","status":"unaffected","versionType":"semver"},{"version":"5.19.2","lessThanOrEqual":"5.19.*","status":"unaffected","versionType":"semver"},{"version":"6.0","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":"3.7","versionEndExcluding":"4.14.291"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"4.19.256"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"5.4.211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"5.10.137"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"5.15.61"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"5.18.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"5.19.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"6.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9d5fec6ba2e4117d196a8259ab54615ffe562460"},{"url":"https://git.kernel.org/stable/c/b51881b1da57fe9877125dfdd0aac5172958fcfd"},{"url":"https://git.kernel.org/stable/c/04549063d5701976034d8c2bfda3d3a8cbf0409f"},{"url":"https://git.kernel.org/stable/c/353b4673d01c512303c45cf2346f630cda73b5c9"},{"url":"https://git.kernel.org/stable/c/cc69ef95988b9ef2fc730ec452a7441efb90ef5e"},{"url":"https://git.kernel.org/stable/c/6a2fd114678d7fc1b5a0f8865ae98f1c17787455"},{"url":"https://git.kernel.org/stable/c/07022e07017ee5540f5559b0aeb916e8383c1e1a"},{"url":"https://git.kernel.org/stable/c/af483947d472eccb79e42059276c4deed76f99a6"}],"title":"arm64: fix oops in concurrently setting insn_emulation sysctls","x_generator":{"engine":"bippy-1.2.0"}}}}