{"id":"CVE-2022-50749","state":"PUBLISHED","title":"acct: fix potential integer overflow in encode_comp_t()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nacct: fix potential integer overflow in encode_comp_t()\n\nThe integer overflow is descripted with following codes:\n  > 317 static comp_t encode_comp_t(u64 value)\n  > 318 {\n  > 319         int exp, rnd;\n    ......\n  > 341         exp <<= MANTSIZE;\n  > 342         exp += value;\n  > 343         return exp;\n  > 344 }\n\nCurrently comp_t is defined as type of '__u16', but the variable 'exp' is\ntype of 'int', so overflow would happen when variable 'exp' in line 343 is\ngreater than 65535.","publishedAt":"2025-12-24T13:05:44.734Z","updatedAt":"2026-05-11T19:24:46.724Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"e93f995a591c352d35d89c518c54f790e1537754","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"cf60bbca1b83a7e0927e36dbf178328982927886","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"1750a0983c455a9b3badd848471fc8d58cb61f67","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"a815a3e019456c94b03bd183e7ac22fd29e9e6fd","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"6edd0cdee5780fd5f43356b72b29a2a6d48ef6da","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"ebe16676e1dcaa4556ec4d36ca40c82e99e88cfa","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"2224897d8187dc22a83e05d9361efcccf67bcf12","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"0aac6e60c464a5f942f995428e67f8ae1c422250","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"c5f31c655bcc01b6da53b836ac951c1556245305","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/acct.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"4.9.337","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.303","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.270","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/acct.c"]}],"references":["https://git.kernel.org/stable/c/e93f995a591c352d35d89c518c54f790e1537754","https://git.kernel.org/stable/c/cf60bbca1b83a7e0927e36dbf178328982927886","https://git.kernel.org/stable/c/1750a0983c455a9b3badd848471fc8d58cb61f67","https://git.kernel.org/stable/c/a815a3e019456c94b03bd183e7ac22fd29e9e6fd","https://git.kernel.org/stable/c/6edd0cdee5780fd5f43356b72b29a2a6d48ef6da","https://git.kernel.org/stable/c/ebe16676e1dcaa4556ec4d36ca40c82e99e88cfa","https://git.kernel.org/stable/c/2224897d8187dc22a83e05d9361efcccf67bcf12","https://git.kernel.org/stable/c/0aac6e60c464a5f942f995428e67f8ae1c422250","https://git.kernel.org/stable/c/c5f31c655bcc01b6da53b836ac951c1556245305"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50749.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50749","state":"PUBLISHED","datePublished":"2025-12-24T13:05:44.734Z","dateUpdated":"2026-05-11T19:24:46.724Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T13:02:21.544Z"},"containers":{"cna":{"title":"acct: fix potential integer overflow in encode_comp_t()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nacct: fix potential integer overflow in encode_comp_t()\n\nThe integer overflow is descripted with following codes:\n  > 317 static comp_t encode_comp_t(u64 value)\n  > 318 {\n  > 319         int exp, rnd;\n    ......\n  > 341         exp <<= MANTSIZE;\n  > 342         exp += value;\n  > 343         return exp;\n  > 344 }\n\nCurrently comp_t is defined as type of '__u16', but the variable 'exp' is\ntype of 'int', so overflow would happen when variable 'exp' in line 343 is\ngreater than 65535."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"e93f995a591c352d35d89c518c54f790e1537754","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"cf60bbca1b83a7e0927e36dbf178328982927886","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"1750a0983c455a9b3badd848471fc8d58cb61f67","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"a815a3e019456c94b03bd183e7ac22fd29e9e6fd","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"6edd0cdee5780fd5f43356b72b29a2a6d48ef6da","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"ebe16676e1dcaa4556ec4d36ca40c82e99e88cfa","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"2224897d8187dc22a83e05d9361efcccf67bcf12","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"0aac6e60c464a5f942f995428e67f8ae1c422250","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"c5f31c655bcc01b6da53b836ac951c1556245305","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/acct.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"4.9.337","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.303","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.270","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/acct.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/e93f995a591c352d35d89c518c54f790e1537754"},{"url":"https://git.kernel.org/stable/c/cf60bbca1b83a7e0927e36dbf178328982927886"},{"url":"https://git.kernel.org/stable/c/1750a0983c455a9b3badd848471fc8d58cb61f67"},{"url":"https://git.kernel.org/stable/c/a815a3e019456c94b03bd183e7ac22fd29e9e6fd"},{"url":"https://git.kernel.org/stable/c/6edd0cdee5780fd5f43356b72b29a2a6d48ef6da"},{"url":"https://git.kernel.org/stable/c/ebe16676e1dcaa4556ec4d36ca40c82e99e88cfa"},{"url":"https://git.kernel.org/stable/c/2224897d8187dc22a83e05d9361efcccf67bcf12"},{"url":"https://git.kernel.org/stable/c/0aac6e60c464a5f942f995428e67f8ae1c422250"},{"url":"https://git.kernel.org/stable/c/c5f31c655bcc01b6da53b836ac951c1556245305"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:24:46.724Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"4.9.337"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"4.14.303"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"4.19.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.4.229"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.10.163"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.15.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.0.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}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