{"id":"CVE-2022-49852","state":"PUBLISHED","title":"riscv: process: fix kernel info leakage","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: process: fix kernel info leakage\n\nthread_struct's s[12] may contain random kernel memory content, which\nmay be finally leaked to userspace. This is a security hole. Fix it\nby clearing the s[12] array in thread_struct when fork.\n\nAs for kthread case, it's better to clear the s[12] array as well.","publishedAt":"2025-05-01T14:10:07.001Z","updatedAt":"2026-05-11T19:08:00.422Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"c4601d30f7d989b4f354df899ab85b5f7a750d30","versionType":"git"},{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"c5c0b3167537793a7cf936fb240366eefd2fc7fb","versionType":"git"},{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"e56d18a976dda653194218df6d40d8122c775712","versionType":"git"},{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"cc36c7fa5d9384602529ba3eea8c5daee7be4dbc","versionType":"git"},{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"358a68f98304b40b201ba5afe94c20355aa3dc68","versionType":"git"},{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"6510c78490c490a6636e48b61eeaa6fb65981f4b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/riscv/kernel/process.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","versionType":"semver"},{"version":"4.19.267","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.225","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.155","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.79","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.9","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/riscv/kernel/process.c"]}],"references":["https://git.kernel.org/stable/c/c4601d30f7d989b4f354df899ab85b5f7a750d30","https://git.kernel.org/stable/c/c5c0b3167537793a7cf936fb240366eefd2fc7fb","https://git.kernel.org/stable/c/e56d18a976dda653194218df6d40d8122c775712","https://git.kernel.org/stable/c/cc36c7fa5d9384602529ba3eea8c5daee7be4dbc","https://git.kernel.org/stable/c/358a68f98304b40b201ba5afe94c20355aa3dc68","https://git.kernel.org/stable/c/6510c78490c490a6636e48b61eeaa6fb65981f4b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49852.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49852","state":"PUBLISHED","datePublished":"2025-05-01T14:10:07.001Z","dateUpdated":"2026-05-11T19:08:00.422Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-05-01T14:05:17.230Z"},"containers":{"cna":{"title":"riscv: process: fix kernel info leakage","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: process: fix kernel info leakage\n\nthread_struct's s[12] may contain random kernel memory content, which\nmay be finally leaked to userspace. This is a security hole. Fix it\nby clearing the s[12] array in thread_struct when fork.\n\nAs for kthread case, it's better to clear the s[12] array as well."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"c4601d30f7d989b4f354df899ab85b5f7a750d30","versionType":"git"},{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"c5c0b3167537793a7cf936fb240366eefd2fc7fb","versionType":"git"},{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"e56d18a976dda653194218df6d40d8122c775712","versionType":"git"},{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"cc36c7fa5d9384602529ba3eea8c5daee7be4dbc","versionType":"git"},{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"358a68f98304b40b201ba5afe94c20355aa3dc68","versionType":"git"},{"version":"7db91e57a0acde126a162ababfb1e0ab190130cb","status":"affected","lessThan":"6510c78490c490a6636e48b61eeaa6fb65981f4b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/riscv/kernel/process.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","versionType":"semver"},{"version":"4.19.267","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.225","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.155","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.79","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.9","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/riscv/kernel/process.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c4601d30f7d989b4f354df899ab85b5f7a750d30"},{"url":"https://git.kernel.org/stable/c/c5c0b3167537793a7cf936fb240366eefd2fc7fb"},{"url":"https://git.kernel.org/stable/c/e56d18a976dda653194218df6d40d8122c775712"},{"url":"https://git.kernel.org/stable/c/cc36c7fa5d9384602529ba3eea8c5daee7be4dbc"},{"url":"https://git.kernel.org/stable/c/358a68f98304b40b201ba5afe94c20355aa3dc68"},{"url":"https://git.kernel.org/stable/c/6510c78490c490a6636e48b61eeaa6fb65981f4b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:08:00.422Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.267"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.4.225"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.10.155"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.15.79"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.0.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}