keys: make keyring indexes independent of kernel addresses
Severity and exploitation
KEV coverage does not rule out exploitation.
Severity
unknownCVSS measures technical severity, not the likelihood of an attack.
Known exploitation
Not listed in the checked CISA KEV catalog
Absence from CISA KEV does not rule out attacks.
Public exploit
Not established by this record
Missing evidence does not mean no public exploit exists.
Remediation
Source guidance available
Review the recorded instructions. Guidance may be a workaround rather than a fixed version.
What this means
In the Linux kernel, the following vulnerability has been resolved:
Source excerpt · LinuxAttack conditions
No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.
Review supporting sources →Affected versions
Check the exact model, release, and any platform requirements against your installation.
Linux · Linux
Linux
9 ranges
Linux · Linux
Linux
Compare with this publisher’s ranges. This does not inspect your installation.
affected
b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 → before 9ebe824d55983c9f063a2c9ef1a08b29812d406f
git versions
b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 → before e108b22999edbc6f431466baf6b2016c19b7ed31
git versions
b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 → before 9f084ef0beb68091e96ab96f0e95579aac8a77f9
git versions
b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 → before 8451d4a4c43127c3b9fdf9fc9ff3fea5539a61f9
git versions
b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 → before 13fc051269d670810d9e314061b61c6dd06116a0
git versions
b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 → before 61ac0585d9f4344d3dfb84b5edff1fee7d532897
git versions
b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 → before 84f7c699f8d139f743c7dc11ef41d085690955bb
git versions
b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 → before a113eba06bd1183c614d7994864d6e7054140cb9
git versions
b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 → before de891c73c1cf41ac8de12c07fa2c84d6a912ad0c
git versions
Other versions: unaffected
Linux · Linux
Linux
11 ranges
Linux · Linux
Linux
Compare with this publisher’s ranges. This does not inspect your installation.
affected
3.13
unaffected
0 → before 3.13
semver versions
5.10.273 → through 5.10.*
semver versions
5.15.224 → through 5.15.*
semver versions
6.1.191 → through 6.1.*
semver versions
6.6.161 → through 6.6.*
semver versions
6.12.115 → through 6.12.*
semver versions
6.18.60 → through 6.18.*
semver versions
7.2.14 → through 7.2.*
semver versions
7.3.1 → through 7.3.*
semver versions
7.4-rc1 → through *
original_commit_for_fix versions
Other versions: affected
What to do
Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.
Remove the addresses from the whole index, not just its first hash word.
cve.new guidance unless attributed to a publisher. This page does not inspect your installation.
Public exploit evidence
No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.
Original source description
Read the full publisher description
In the Linux kernel, the following vulnerability has been resolved:
keys: make keyring indexes independent of kernel addresses
KEYCTL_READ returns the serial numbers in a keyring in associative-array traversal order. The first word of the index is a public, deterministic hash of the type pointer, domain pointer and description. An unprivileged user can therefore insert keys with known descriptions, predict their order for each possible KASLR slide, and recover the kernel image address. On an x86-64 build with 16 MiB alignment, 45 user keys suffice to distinguish the candidate slides.
Remove the addresses from the whole index, not just its first hash word. Assign each key type and domain a nonzero 64-bit ID and hash those IDs and the description with a once-initialized SipHash key. Use the full IDs in the later index chunks as well. Truncating or hashing the IDs there would lose the guarantee that distinct type/domain/description tuples have a differing index bit.
Allocate IDs lazily since private key types need not be registered. Cache them in the index key so tree walks and copies of an existing index do not need to dereference a type descriptor that may have been unregistered. Keep the 32-bit chunk layout and diff_objects() bit offsets consistent, and retain the separate root slot for keyrings used by recursive search. The key comparison, permissions and userspace data format are unchanged; only the address-dependent in-memory ordering is replaced.
References
9 sourcesInside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-99223View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Environment requirements
These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.
Linux · platform conditions
Any condition may hold
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 3.13
Before: 5.10.273
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 3.13
Before: 5.15.224
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 3.13
Before: 6.1.191
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 3.13
Before: 6.6.161
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 3.13
Before: 6.12.115
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 3.13
Before: 6.18.60
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 3.13
Before: 7.2.14
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 3.13
Before: 7.3.1
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 3.13
Before: 7.4-rc1
Original applicability statements
[
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "5.10.273"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "5.15.224"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "6.1.191"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "6.6.161"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "6.12.115"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "6.18.60"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "7.2.14"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "7.3.1"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.13",
"versionEndExcluding": "7.4-rc1"
}
]
}
]
}
]Contributing organizations · 1
Assigning organization
Timeline
All times UTCAdvisory published
Publication date supplied by the source.
Source updated
Latest modification date supplied by the source.
Last imported by cve.new
Latest catalog import, not the date we first saw this advisory.
What changed
Follow changes- CVE · CVE-2026-99223
Observed 2026-11-03T19:50:16.764Z · upstream updated 2026-11-03T19:12:57.119Z
Product or version evidence changed
before
[ { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "9ebe824d55983c9f063a2c9ef1a08b29812d406f", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "e108b22999edbc6f431466baf6b2016c19b7ed31", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "9f084ef0beb68091e96ab96f0e95579aac8a77f9", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "8451d4a4c43127c3b9fdf9fc9ff3fea5539a61f9", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "13fc051269d670810d9e314061b61c6dd06116a0", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "61ac0585d9f4344d3dfb84b5edff1fee7d532897", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "84f7c699f8d139f743c7dc11ef41d085690955bb", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "a113eba06bd1183c614d7994864d6e7054140cb9", "versionType": "git" } ], "defaultStatus": "unaffected", "cpes": [], "source": "Linux", "url": "https://www.cve.org/CVERecord?id=CVE-2026-99223" }, { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "3.13", "status": "affected" }, { "version": "0", "status": "unaffected", "lessThan": "3.13", "versionType": "semver" }, { "version": "5.10.273", "status": "unaffected", "lessThanOrEqual": "5.10.*", "versionType": "semver" }, { "version": "5.15.224", "status": "unaffected", "lessThanOrEqual": "5.15.*", "versionType": "semver" }, { "version": "6.1.191", "status": "unaffected", "lessThanOrEqual": "6.1.*", "versionType": "semver" }, { "version": "6.6.161", "status": "unaffected", "lessThanOrEqual": "6.6.*", "versionType": "semver" }, { "version": "6.12.115", "status": "unaffected", "lessThanOrEqual": "6.12.*", "versionType": "semver" }, { "version": "6.18.60", "status": "unaffected", "lessThanOrEqual": "6.18.*", "versionType": "semver" }, { "version": "7.2.14", "status": "unaffected", "lessThanOrEqual": "7.2.*", "versionType": "semver" }, { "version": "7.3.1", "status": "unaffected", "lessThanOrEqual": "7.3.*", "versionType": "semver" } ], "defaultStatus": "affected", "cpes": [], "source": "Linux", "url": "https://www.cve.org/CVERecord?id=CVE-2026-99223" } ]after
[ { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "9ebe824d55983c9f063a2c9ef1a08b29812d406f", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "e108b22999edbc6f431466baf6b2016c19b7ed31", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "9f084ef0beb68091e96ab96f0e95579aac8a77f9", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "8451d4a4c43127c3b9fdf9fc9ff3fea5539a61f9", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "13fc051269d670810d9e314061b61c6dd06116a0", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "61ac0585d9f4344d3dfb84b5edff1fee7d532897", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "84f7c699f8d139f743c7dc11ef41d085690955bb", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "a113eba06bd1183c614d7994864d6e7054140cb9", "versionType": "git" }, { "version": "b2a4df200d570b2c33a57e1ebfa5896e4bc81b69", "status": "affected", "lessThan": "de891c73c1cf41ac8de12c07fa2c84d6a912ad0c", "versionType": "git" } ], "defaultStatus": "unaffected", "cpes": [], "source": "Linux", "url": "https://www.cve.org/CVERecord?id=CVE-2026-99223" }, { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "3.13", "status": "affected" }, { "version": "0", "status": "unaffected", "lessThan": "3.13", "versionType": "semver" }, { "version": "5.10.273", "status": "unaffected", "lessThanOrEqual": "5.10.*", "versionType": "semver" }, { "version": "5.15.224", "status": "unaffected", "lessThanOrEqual": "5.15.*", "versionType": "semver" }, { "version": "6.1.191", "status": "unaffected", "lessThanOrEqual": "6.1.*", "versionType": "semver" }, { "version": "6.6.161", "status": "unaffected", "lessThanOrEqual": "6.6.*", "versionType": "semver" }, { "version": "6.12.115", "status": "unaffected", "lessThanOrEqual": "6.12.*", "versionType": "semver" }, { "version": "6.18.60", "status": "unaffected", "lessThanOrEqual": "6.18.*", "versionType": "semver" }, { "version": "7.2.14", "status": "unaffected", "lessThanOrEqual": "7.2.*", "versionType": "semver" }, { "version": "7.3.1", "status": "unaffected", "lessThanOrEqual": "7.3.*", "versionType": "semver" }, { "version": "7.4-rc1", "status": "unaffected", "lessThanOrEqual": "*", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected", "cpes": [], "source": "Linux", "url": "https://www.cve.org/CVERecord?id=CVE-2026-99223" } ]References changed
before
[ "https://git.kernel.org/stable/c/9ebe824d55983c9f063a2c9ef1a08b29812d406f", "https://git.kernel.org/stable/c/e108b22999edbc6f431466baf6b2016c19b7ed31", "https://git.kernel.org/stable/c/9f084ef0beb68091e96ab96f0e95579aac8a77f9", "https://git.kernel.org/stable/c/8451d4a4c43127c3b9fdf9fc9ff3fea5539a61f9", "https://git.kernel.org/stable/c/13fc051269d670810d9e314061b61c6dd06116a0", "https://git.kernel.org/stable/c/61ac0585d9f4344d3dfb84b5edff1fee7d532897", "https://git.kernel.org/stable/c/84f7c699f8d139f743c7dc11ef41d085690955bb", "https://git.kernel.org/stable/c/a113eba06bd1183c614d7994864d6e7054140cb9" ]
after
[ "https://git.kernel.org/stable/c/9ebe824d55983c9f063a2c9ef1a08b29812d406f", "https://git.kernel.org/stable/c/e108b22999edbc6f431466baf6b2016c19b7ed31", "https://git.kernel.org/stable/c/9f084ef0beb68091e96ab96f0e95579aac8a77f9", "https://git.kernel.org/stable/c/8451d4a4c43127c3b9fdf9fc9ff3fea5539a61f9", "https://git.kernel.org/stable/c/13fc051269d670810d9e314061b61c6dd06116a0", "https://git.kernel.org/stable/c/61ac0585d9f4344d3dfb84b5edff1fee7d532897", "https://git.kernel.org/stable/c/84f7c699f8d139f743c7dc11ef41d085690955bb", "https://git.kernel.org/stable/c/a113eba06bd1183c614d7994864d6e7054140cb9", "https://git.kernel.org/stable/c/de891c73c1cf41ac8de12c07fa2c84d6a912ad0c" ]
Environment requirements changed
before
[ { "source": "Linux", "statements": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.10.273" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.15.224" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.1.191" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.6.161" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.12.115" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.18.60" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "7.2.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "7.3.1" } ] } ] } ] } ]after
[ { "source": "Linux", "statements": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.10.273" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.15.224" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.1.191" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.6.161" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.12.115" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.18.60" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "7.2.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "7.3.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "7.4-rc1" } ] } ] } ] } ]
Large field values are marked as truncated previews. Original source snapshots remain retained.
Showing up to 50 most recent observed changes.