{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-48906","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-08-21T06:06:23.292Z","datePublished":"2024-08-22T01:30:40.850Z","dateUpdated":"2025-05-04T12:43:58.850Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T12:43:58.850Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: Correctly set DATA_FIN timeout when number of retransmits is large\n\nSyzkaller with UBSAN uncovered a scenario where a large number of\nDATA_FIN retransmits caused a shift-out-of-bounds in the DATA_FIN\ntimeout calculation:\n\n================================================================================\nUBSAN: shift-out-of-bounds in net/mptcp/protocol.c:470:29\nshift exponent 32 is too large for 32-bit type 'unsigned int'\nCPU: 1 PID: 13059 Comm: kworker/1:0 Not tainted 5.17.0-rc2-00630-g5fbf21c90c60 #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\nWorkqueue: events mptcp_worker\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n ubsan_epilogue+0xb/0x5a lib/ubsan.c:151\n __ubsan_handle_shift_out_of_bounds.cold+0xb2/0x20e lib/ubsan.c:330\n mptcp_set_datafin_timeout net/mptcp/protocol.c:470 [inline]\n __mptcp_retrans.cold+0x72/0x77 net/mptcp/protocol.c:2445\n mptcp_worker+0x58a/0xa70 net/mptcp/protocol.c:2528\n process_one_work+0x9df/0x16d0 kernel/workqueue.c:2307\n worker_thread+0x95/0xe10 kernel/workqueue.c:2454\n kthread+0x2f4/0x3b0 kernel/kthread.c:377\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295\n </TASK>\n================================================================================\n\nThis change limits the maximum timeout by limiting the size of the\nshift, which keeps all intermediate values in-bounds."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mptcp/protocol.c"],"versions":[{"version":"6477dd39e62c3a67cfa368ddc127410b4ae424c6","lessThan":"0c3f34beb459753f9f80d0cc14c1b50ab615c631","status":"affected","versionType":"git"},{"version":"6477dd39e62c3a67cfa368ddc127410b4ae424c6","lessThan":"03ae283bd71f761feae3f402668d698b393b0e79","status":"affected","versionType":"git"},{"version":"6477dd39e62c3a67cfa368ddc127410b4ae424c6","lessThan":"877d11f0332cd2160e19e3313e262754c321fa36","status":"affected","versionType":"git"},{"version":"0af76111c2a6326e4bb56f64a6e453c6ec6dd2da","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mptcp/protocol.c"],"versions":[{"version":"5.13","status":"affected"},{"version":"0","lessThan":"5.13","status":"unaffected","versionType":"semver"},{"version":"5.15.27","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.16.13","lessThanOrEqual":"5.16.*","status":"unaffected","versionType":"semver"},{"version":"5.17","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":"5.13","versionEndExcluding":"5.15.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.16.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12.4"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0c3f34beb459753f9f80d0cc14c1b50ab615c631"},{"url":"https://git.kernel.org/stable/c/03ae283bd71f761feae3f402668d698b393b0e79"},{"url":"https://git.kernel.org/stable/c/877d11f0332cd2160e19e3313e262754c321fa36"}],"title":"mptcp: Correctly set DATA_FIN timeout when number of retransmits is large","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2022-48906","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T15:34:17.194266Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-12T17:33:02.444Z"}}]}}