{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-26638","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-19T14:20:24.137Z","datePublished":"2024-03-18T10:14:48.970Z","dateUpdated":"2025-05-04T08:52:51.394Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T08:52:51.394Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnbd: always initialize struct msghdr completely\n\nsyzbot complains that msg->msg_get_inq value can be uninitialized [1]\n\nstruct msghdr got many new fields recently, we should always make\nsure their values is zero by default.\n\n[1]\n BUG: KMSAN: uninit-value in tcp_recvmsg+0x686/0xac0 net/ipv4/tcp.c:2571\n  tcp_recvmsg+0x686/0xac0 net/ipv4/tcp.c:2571\n  inet_recvmsg+0x131/0x580 net/ipv4/af_inet.c:879\n  sock_recvmsg_nosec net/socket.c:1044 [inline]\n  sock_recvmsg+0x12b/0x1e0 net/socket.c:1066\n  __sock_xmit+0x236/0x5c0 drivers/block/nbd.c:538\n  nbd_read_reply drivers/block/nbd.c:732 [inline]\n  recv_work+0x262/0x3100 drivers/block/nbd.c:863\n  process_one_work kernel/workqueue.c:2627 [inline]\n  process_scheduled_works+0x104e/0x1e70 kernel/workqueue.c:2700\n  worker_thread+0xf45/0x1490 kernel/workqueue.c:2781\n  kthread+0x3ed/0x540 kernel/kthread.c:388\n  ret_from_fork+0x66/0x80 arch/x86/kernel/process.c:147\n  ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242\n\nLocal variable msg created at:\n  __sock_xmit+0x4c/0x5c0 drivers/block/nbd.c:513\n  nbd_read_reply drivers/block/nbd.c:732 [inline]\n  recv_work+0x262/0x3100 drivers/block/nbd.c:863\n\nCPU: 1 PID: 7465 Comm: kworker/u5:1 Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023\nWorkqueue: nbd5-recv recv_work"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/nbd.c"],"versions":[{"version":"f94fd25cb0aaf77fd7453f31c5d394a1a68ecf60","lessThan":"d9c54763e5cdbbd3f81868597fe8aca3c96e6387","status":"affected","versionType":"git"},{"version":"f94fd25cb0aaf77fd7453f31c5d394a1a68ecf60","lessThan":"1960f2b534da1e6c65fb96f9e98bda773495f406","status":"affected","versionType":"git"},{"version":"f94fd25cb0aaf77fd7453f31c5d394a1a68ecf60","lessThan":"b0028f333420a65a53a63978522db680b37379dd","status":"affected","versionType":"git"},{"version":"f94fd25cb0aaf77fd7453f31c5d394a1a68ecf60","lessThan":"78fbb92af27d0982634116c7a31065f24d092826","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/nbd.c"],"versions":[{"version":"5.19","status":"affected"},{"version":"0","lessThan":"5.19","status":"unaffected","versionType":"semver"},{"version":"6.1.76","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.15","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.7.3","lessThanOrEqual":"6.7.*","status":"unaffected","versionType":"semver"},{"version":"6.8","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":"5.19","versionEndExcluding":"6.1.76"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.6.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.8"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/d9c54763e5cdbbd3f81868597fe8aca3c96e6387"},{"url":"https://git.kernel.org/stable/c/1960f2b534da1e6c65fb96f9e98bda773495f406"},{"url":"https://git.kernel.org/stable/c/b0028f333420a65a53a63978522db680b37379dd"},{"url":"https://git.kernel.org/stable/c/78fbb92af27d0982634116c7a31065f24d092826"}],"title":"nbd: always initialize struct msghdr completely","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","lang":"en","description":"CWE-noinfo Not enough information"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.4,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"HIGH","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-03-18T15:03:09.857129Z","id":"CVE-2024-26638","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-10-31T14:29:55.080Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T00:07:19.859Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/d9c54763e5cdbbd3f81868597fe8aca3c96e6387","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/1960f2b534da1e6c65fb96f9e98bda773495f406","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/b0028f333420a65a53a63978522db680b37379dd","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/78fbb92af27d0982634116c7a31065f24d092826","tags":["x_transferred"]}]}]}}