{"id":"CVE-2026-23136","title":"libceph: reset sparse-read state in osd_fault()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: reset sparse-read state in osd_fault()\n\nWhen a fault occurs, the connection is abandoned, reestablished, and any\npending operations are retried. The OSD client…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= f628d799972799023d32c2542bb2639eb8c4f84e < 90a60fe61908afa0eaf7f8fcf1421b9b50e5f7ff","Linux >= f628d799972799023d32c2542bb2639eb8c4f84e < e94075e950a6598e710b9f7dffea5aa388f40313","Linux >= f628d799972799023d32c2542bb2639eb8c4f84e < 10b7c72810364226f7b27916ea3e2a4f870bc04b","Linux >= f628d799972799023d32c2542bb2639eb8c4f84e < 11194b416ef95012c2cfe5f546d71af07b639e93","Linux 6.6"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-16T15:06:32.045794Z"},"published":"2026-02-14","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:09:49.563Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23136","references":[{"url":"https://git.kernel.org/stable/c/90a60fe61908afa0eaf7f8fcf1421b9b50e5f7ff"},{"url":"https://git.kernel.org/stable/c/e94075e950a6598e710b9f7dffea5aa388f40313"},{"url":"https://git.kernel.org/stable/c/10b7c72810364226f7b27916ea3e2a4f870bc04b"},{"url":"https://git.kernel.org/stable/c/11194b416ef95012c2cfe5f546d71af07b639e93"}],"tags":["cve.org"],"epss":0.00328,"epssPercentile":0.24263,"ingestedAt":"2026-10-16T17:24:46.639Z","slug":"CVE-2026-23136","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: reset sparse-read state in osd_fault()\n\nWhen a fault occurs, the connection is abandoned, reestablished, and any\npending operations are retried. The OSD client tracks the progress of a\nsparse-read reply using a separate state machine, largely independent of\nthe messenger's state.\n\nIf a connection is lost mid-payload or the sparse-read state machine\nreturns an error, the sparse-read state is not reset. The OSD client\nwill then interpret the beginning of a new reply as the continuation of\nthe old one. If this makes the sparse-read machinery enter a failure\nstate, it may never recover, producing loops like:\n\n  libceph:  [0] got 0 extents\n  libceph: data len 142248331 != extent len 0\n  libceph: osd0 (1)...:6801 socket error on read\n  libceph: data len 142248331 != extent len 0\n  libceph: osd0 (1)...:6801 socket error on read\n\nTherefore, reset the sparse-read state in osd_fault(), ensuring retries\nstart from a clean state.\n\n## Affected\n\n- `Linux >= f628d799972799023d32c2542bb2639eb8c4f84e < 90a60fe61908afa0eaf7f8fcf1421b9b50e5f7ff`\n- `Linux >= f628d799972799023d32c2542bb2639eb8c4f84e < e94075e950a6598e710b9f7dffea5aa388f40313`\n- `Linux >= f628d799972799023d32c2542bb2639eb8c4f84e < 10b7c72810364226f7b27916ea3e2a4f870bc04b`\n- `Linux >= f628d799972799023d32c2542bb2639eb8c4f84e < 11194b416ef95012c2cfe5f546d71af07b639e93`\n- `Linux 6.6`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}