{"id":"CVE-2022-49727","state":"PUBLISHED","title":"ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: Fix signed integer overflow in l2tp_ip6_sendmsg\n\nWhen len >= INT_MAX - transhdrlen, ulen = len + transhdrlen will be\noverflow. To fix, we can follow what udpv6 does and subtract the\ntranshdrlen from the max.","publishedAt":"2025-02-26T02:24:38.672Z","updatedAt":"2026-05-11T19:05:40.832Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"2cf73c7cb6125083408d77f43d0e84d86aed0000","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"0e818d433fc2718fe4da044ffca7431812a7e04e","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"6c4e3486d21173d60925ef52e512cae727b43d30","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"2f42389d270f2304c8855b0b63498a5a4d0c053d","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"b8879ca1fd7348b4d5db7db86dcb97f60c73d751","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"27a37755ceb401111ded76810359d3adc4b268a1","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"034246122f5c5e2e2a0b9fe04e24517920e9beb1","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"f638a84afef3dfe10554c51820c16e39a278c915","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/l2tp/l2tp_ip6.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.5","versionType":"semver"},{"version":"4.9.320","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.285","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.249","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.200","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.124","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.49","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.6","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/l2tp/l2tp_ip6.c"]}],"references":["https://git.kernel.org/stable/c/2cf73c7cb6125083408d77f43d0e84d86aed0000","https://git.kernel.org/stable/c/0e818d433fc2718fe4da044ffca7431812a7e04e","https://git.kernel.org/stable/c/6c4e3486d21173d60925ef52e512cae727b43d30","https://git.kernel.org/stable/c/2f42389d270f2304c8855b0b63498a5a4d0c053d","https://git.kernel.org/stable/c/b8879ca1fd7348b4d5db7db86dcb97f60c73d751","https://git.kernel.org/stable/c/27a37755ceb401111ded76810359d3adc4b268a1","https://git.kernel.org/stable/c/034246122f5c5e2e2a0b9fe04e24517920e9beb1","https://git.kernel.org/stable/c/f638a84afef3dfe10554c51820c16e39a278c915"],"weaknesses":["CWE-190"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49727.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49727","state":"PUBLISHED","datePublished":"2025-02-26T02:24:38.672Z","dateUpdated":"2026-05-11T19:05:40.832Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:21:30.448Z"},"containers":{"cna":{"title":"ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: Fix signed integer overflow in l2tp_ip6_sendmsg\n\nWhen len >= INT_MAX - transhdrlen, ulen = len + transhdrlen will be\noverflow. To fix, we can follow what udpv6 does and subtract the\ntranshdrlen from the max."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"2cf73c7cb6125083408d77f43d0e84d86aed0000","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"0e818d433fc2718fe4da044ffca7431812a7e04e","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"6c4e3486d21173d60925ef52e512cae727b43d30","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"2f42389d270f2304c8855b0b63498a5a4d0c053d","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"b8879ca1fd7348b4d5db7db86dcb97f60c73d751","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"27a37755ceb401111ded76810359d3adc4b268a1","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"034246122f5c5e2e2a0b9fe04e24517920e9beb1","versionType":"git"},{"version":"a32e0eec7042b21ccb52896cf715e3e2641fed93","status":"affected","lessThan":"f638a84afef3dfe10554c51820c16e39a278c915","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/l2tp/l2tp_ip6.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.5","versionType":"semver"},{"version":"4.9.320","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.285","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.249","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.200","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.124","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.49","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.6","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/l2tp/l2tp_ip6.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/2cf73c7cb6125083408d77f43d0e84d86aed0000"},{"url":"https://git.kernel.org/stable/c/0e818d433fc2718fe4da044ffca7431812a7e04e"},{"url":"https://git.kernel.org/stable/c/6c4e3486d21173d60925ef52e512cae727b43d30"},{"url":"https://git.kernel.org/stable/c/2f42389d270f2304c8855b0b63498a5a4d0c053d"},{"url":"https://git.kernel.org/stable/c/b8879ca1fd7348b4d5db7db86dcb97f60c73d751"},{"url":"https://git.kernel.org/stable/c/27a37755ceb401111ded76810359d3adc4b268a1"},{"url":"https://git.kernel.org/stable/c/034246122f5c5e2e2a0b9fe04e24517920e9beb1"},{"url":"https://git.kernel.org/stable/c/f638a84afef3dfe10554c51820c16e39a278c915"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:05:40.832Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"4.9.320"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"4.14.285"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"4.19.249"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"5.4.200"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"5.10.124"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"5.15.49"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"5.18.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"5.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-49727","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:31:59.782521Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","lang":"en","type":"CWE","description":"CWE-190 Integer Overflow or Wraparound"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:36:43.909Z"}}]}}}