libceph: Avoid using invalid osd indices from primary_temp
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 ]
CVE-2026-80558
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80558
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5e8d4d36bf23bb7baf027c479d54395840219928",
"lessThan": "505fc50b8ff8e687b7e3ef6866269dea27366224",
"versionType": "git"
},
{
"status": "affected",
"version": "5e8d4d36bf23bb7baf027c479d54395840219928",
"lessThan": "1c705fe8e59c6b16f48964973fb23c8ec4735b73",
"versionType": "git"
},
{
"status": "affected",
"version": "5e8d4d36bf23bb7baf027c479d54395840219928",
"lessThan": "dfe1877d351b99eb1b1a62a3fc2d174220e88e20",
"versionType": "git"
},
{
"status": "affected",
"version": "5e8d4d36bf23bb7baf027c479d54395840219928",
"lessThan": "e2ffeec85201b2bb748e99e12539ee1b92f62796",
"versionType": "git"
},
{
"status": "affected",
"version": "5e8d4d36bf23bb7baf027c479d54395840219928",
"lessThan": "6799d4a916ffcb3d450d8440f9fe0f0862f768d6",
"versionType": "git"
},
{
"status": "affected",
"version": "5e8d4d36bf23bb7baf027c479d54395840219928",
"lessThan": "4f392fec075562dc93bb0c69f37423ca2af9b48f",
"versionType": "git"
},
{
"status": "affected",
"version": "5e8d4d36bf23bb7baf027c479d54395840219928",
"lessThan": "e009c5f0ad634c62f5c48a41f1f3c019ecf52555",
"versionType": "git"
},
{
"status": "affected",
"version": "5e8d4d36bf23bb7baf027c479d54395840219928",
"lessThan": "3660b98d1204b419f6a77e9a295f148dcf38d042",
"versionType": "git"
}
],
"programFiles": [
"net/ceph/osdmap.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.266",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.217",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.184",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.153",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.105",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.46",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.10",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ceph/osdmap.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80558
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #34325 · Revision 1
- Added to Heist Feed
- Publisher date