Answer in brief
CVE-2026-80558 records a Unknown severity vulnerability in libceph: Avoid using invalid osd indices from primary_temp. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=5e8d4d36bf23bb7baf027c479d54395840219928 <505fc50b8ff8e687b7e3ef6866269dea27366224 || >=5e8d4d36bf23bb7baf027c479d54395840219928 <1c705fe8e59c6b16f48964973fb23c8ec4735b73 || >=5e8d4d36bf23bb7baf027c479d54395840219928 <dfe1877d351b99eb1b1a62a3fc2d174220e88e20 || >=5e8d4d36bf23bb7baf027c479d54395840219928 <e2ffeec85201b2bb748e99e12539ee1b92f62796 || >=5e8d4d36bf23bb7baf027c479d54395840219928 <6799d4a916ffcb3d450d8440f9fe0f0862f768d6 || >=5e8d4d36bf23bb7baf027c479d54395840219928 <4f392fec075562dc93bb0c69f37423ca2af9b48f || >=5e8d4d36bf23bb7baf027c479d54395840219928 <e009c5f0ad634c62f5c48a41f1f3c019ecf52555 || >=5e8d4d36bf23bb7baf027c479d54395840219928 <3660b98d1204b419f6a77e9a295f148dcf38d042 | 505fc50b8ff8e687b7e3ef6866269dea27366224, 1c705fe8e59c6b16f48964973fb23c8ec4735b73, dfe1877d351b99eb1b1a62a3fc2d174220e88e20, e2ffeec85201b2bb748e99e12539ee1b92f62796, 6799d4a916ffcb3d450d8440f9fe0f0862f768d6, 4f392fec075562dc93bb0c69f37423ca2af9b48f, e009c5f0ad634c62f5c48a41f1f3c019ecf52555, 3660b98d1204b419f6a77e9a295f148dcf38d042 |
| Linux/Linuxgeneric | 3.15 | Not reported |
Published upstream
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 26, 2026
In the Linux kernel, the following vulnerability has been resolved: libceph: Avoid using invalid osd indices from primary_temp A corrupted osdmap received from a Ceph monitor or OSD may contain osd indices in its pg_temp, primary_temp, pg_upmap, and pg_upmap_items parts that don't exist, i.e., that are greater than max_osd or smaller than CEPH_HOMELESS_OSD (-1). These indices are used to create the up and acting set in ceph_pg_to_up_acting_osds(), called from calc_target(). While most of these osd indices are checked, the one from primary_temp is not. Subsequently, this may lead to calc_target() returning this (potentially invalid) index as target osd for a (linger) request. Because the osd_state, osd_weight, and osd_addr arrays only contain max_osd entries (with indices 0 to max_osd -1), this leads to out-of-bounds accesses when trying to read values from these arrays. This patch fixes the issue by adding a check to get_temp_osds(), so that only valid osd indices from primary_temp are used, and it falls back to using the primary from pg_temp or the up set if it is invalid. [ idryomov: changelog ]
Quoted source text, attributed separately from HOL analysis.