io_uring/wait: don't spin on a stuck overflow list
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
Fix status not established
No structured fix or guidance is available here. Check the latest publisher advisory.
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
6 ranges
Linux · Linux
Linux
Compare with this publisher’s ranges. This does not inspect your installation.
affected
3fcf19d592d5cb63eb209400b22055651e3c27d0 → before bf1d2ed84b3162e3b0e0bb7018ac59147da6e975
git versions
3fcf19d592d5cb63eb209400b22055651e3c27d0 → before a6cfc85c6bf9498aaf1978b503f9663635a1aa22
git versions
3fcf19d592d5cb63eb209400b22055651e3c27d0 → before 4a89352edd8b3e20d1e1fb33f0fc297dd137149f
git versions
3fcf19d592d5cb63eb209400b22055651e3c27d0 → before c347691e5dc5481b2d6943c123619e04847fb0dc
git versions
3fcf19d592d5cb63eb209400b22055651e3c27d0 → before 340944e27b4bb218ed0ee66d0947ac70faefa05a
git versions
3fcf19d592d5cb63eb209400b22055651e3c27d0 → before 34f5a664c34d3cb62f6bec7f4156754594a7d25b
git versions
Other versions: unaffected
Linux · Linux
Linux
8 ranges
Linux · Linux
Linux
Compare with this publisher’s ranges. This does not inspect your installation.
affected
6.3
unaffected
0 → before 6.3
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
7.3.2 → 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.
No structured fix or remediation guidance is available here. Check the full source description and vendor’s latest advisory for a patch or workaround; do not assume another version is safe.
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:
io_uring/wait: don't spin on a stuck overflow list
As long as IO_CHECK_CQ_OVERFLOW_BIT is set, io_cqring_wait_schedule() returns right away, before it gets to look at signals or arms the timeout, for io_cqring_wait() to flush the overflow list. If that doesn't empty the list, and the CQ ring doesn't hold the number of events the caller wants, the loop starts over, with the same result. The task spins in the kernel, and can't be killed.
The assumption is that this can't happen: if CQEs can't be flushed, the ring is full, and min_events is capped to the size of the ring. But:
-
With IORING_SETUP_CQE_MIXED a 32b CQE needs two contiguous entries. It is stuck on the list if a single one is free, and then the ring holds less than cq_entries events. A single threaded application that asks for as many events as the ring has entries never gets out of io_uring_enter().
-
Whether the ring is full is up to the CQ head, which the application can write to. While one thread waits for events on an empty ring, another one can move the head back so that the ring looks full and have a CQE overflow. The waiter can't be stopped any more, not even by SIGKILL.
Only the application can make room in the CQ ring. Return to it if the list could not be flushed.
References
6 sourcesInside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-99229View 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): 6.3
Before: 6.6.161
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 6.3
Before: 6.12.115
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 6.3
Before: 6.18.60
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 6.3
Before: 7.2.14
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 6.3
Before: 7.3.2
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 6.3
Before: 7.4-rc1
Original applicability statements
[
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.3",
"versionEndExcluding": "6.6.161"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.3",
"versionEndExcluding": "6.12.115"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.3",
"versionEndExcluding": "6.18.60"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.3",
"versionEndExcluding": "7.2.14"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.3",
"versionEndExcluding": "7.3.2"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.3",
"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-2026-99229
Observed 2026-11-06T17:58:52.747Z · upstream updated 2026-11-06T17:15:10.679Z
Product or version evidence changed
before
[ { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "bf1d2ed84b3162e3b0e0bb7018ac59147da6e975", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "a6cfc85c6bf9498aaf1978b503f9663635a1aa22", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "4a89352edd8b3e20d1e1fb33f0fc297dd137149f", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "c347691e5dc5481b2d6943c123619e04847fb0dc", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "34f5a664c34d3cb62f6bec7f4156754594a7d25b", "versionType": "git" } ], "defaultStatus": "unaffected", "cpes": [], "source": "Linux", "url": "https://www.cve.org/CVERecord?id=CVE-2026-99229" }, { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "6.3", "status": "affected" }, { "version": "0", "status": "unaffected", "lessThan": "6.3", "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": "7.4-rc1", "status": "unaffected", "lessThanOrEqual": "*", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected", "cpes": [], "source": "Linux", "url": "https://www.cve.org/CVERecord?id=CVE-2026-99229" } ]after
[ { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "bf1d2ed84b3162e3b0e0bb7018ac59147da6e975", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "a6cfc85c6bf9498aaf1978b503f9663635a1aa22", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "4a89352edd8b3e20d1e1fb33f0fc297dd137149f", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "c347691e5dc5481b2d6943c123619e04847fb0dc", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "340944e27b4bb218ed0ee66d0947ac70faefa05a", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "34f5a664c34d3cb62f6bec7f4156754594a7d25b", "versionType": "git" } ], "defaultStatus": "unaffected", "cpes": [], "source": "Linux", "url": "https://www.cve.org/CVERecord?id=CVE-2026-99229" }, { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "6.3", "status": "affected" }, { "version": "0", "status": "unaffected", "lessThan": "6.3", "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": "7.3.2", "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-2026-99229" } ]References changed
before
[ "https://git.kernel.org/stable/c/bf1d2ed84b3162e3b0e0bb7018ac59147da6e975", "https://git.kernel.org/stable/c/a6cfc85c6bf9498aaf1978b503f9663635a1aa22", "https://git.kernel.org/stable/c/4a89352edd8b3e20d1e1fb33f0fc297dd137149f", "https://git.kernel.org/stable/c/c347691e5dc5481b2d6943c123619e04847fb0dc", "https://git.kernel.org/stable/c/34f5a664c34d3cb62f6bec7f4156754594a7d25b" ]
after
[ "https://git.kernel.org/stable/c/bf1d2ed84b3162e3b0e0bb7018ac59147da6e975", "https://git.kernel.org/stable/c/a6cfc85c6bf9498aaf1978b503f9663635a1aa22", "https://git.kernel.org/stable/c/4a89352edd8b3e20d1e1fb33f0fc297dd137149f", "https://git.kernel.org/stable/c/c347691e5dc5481b2d6943c123619e04847fb0dc", "https://git.kernel.org/stable/c/340944e27b4bb218ed0ee66d0947ac70faefa05a", "https://git.kernel.org/stable/c/34f5a664c34d3cb62f6bec7f4156754594a7d25b" ]
Environment requirements changed
before
[ { "source": "Linux", "statements": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.6.161" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.115" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.60" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.2.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.4-rc1" } ] } ] } ] } ]after
[ { "source": "Linux", "statements": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.6.161" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.115" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.60" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.2.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.3.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.4-rc1" } ] } ] } ] } ] - CVE · CVE-2026-99229
Observed 2026-11-03T19:50:29.055Z · upstream updated 2026-11-03T19:13:00.548Z
Product or version evidence changed
before
[ { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "bf1d2ed84b3162e3b0e0bb7018ac59147da6e975", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "a6cfc85c6bf9498aaf1978b503f9663635a1aa22", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "4a89352edd8b3e20d1e1fb33f0fc297dd137149f", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "c347691e5dc5481b2d6943c123619e04847fb0dc", "versionType": "git" } ], "defaultStatus": "unaffected", "cpes": [], "source": "Linux", "url": "https://www.cve.org/CVERecord?id=CVE-2026-99229" }, { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "6.3", "status": "affected" }, { "version": "0", "status": "unaffected", "lessThan": "6.3", "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" } ], "defaultStatus": "affected", "cpes": [], "source": "Linux", "url": "https://www.cve.org/CVERecord?id=CVE-2026-99229" } ]after
[ { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "bf1d2ed84b3162e3b0e0bb7018ac59147da6e975", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "a6cfc85c6bf9498aaf1978b503f9663635a1aa22", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "4a89352edd8b3e20d1e1fb33f0fc297dd137149f", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "c347691e5dc5481b2d6943c123619e04847fb0dc", "versionType": "git" }, { "version": "3fcf19d592d5cb63eb209400b22055651e3c27d0", "status": "affected", "lessThan": "34f5a664c34d3cb62f6bec7f4156754594a7d25b", "versionType": "git" } ], "defaultStatus": "unaffected", "cpes": [], "source": "Linux", "url": "https://www.cve.org/CVERecord?id=CVE-2026-99229" }, { "vendor": "Linux", "name": "Linux", "platforms": [], "versions": [ { "version": "6.3", "status": "affected" }, { "version": "0", "status": "unaffected", "lessThan": "6.3", "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": "7.4-rc1", "status": "unaffected", "lessThanOrEqual": "*", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected", "cpes": [], "source": "Linux", "url": "https://www.cve.org/CVERecord?id=CVE-2026-99229" } ]References changed
before
[ "https://git.kernel.org/stable/c/bf1d2ed84b3162e3b0e0bb7018ac59147da6e975", "https://git.kernel.org/stable/c/a6cfc85c6bf9498aaf1978b503f9663635a1aa22", "https://git.kernel.org/stable/c/4a89352edd8b3e20d1e1fb33f0fc297dd137149f", "https://git.kernel.org/stable/c/c347691e5dc5481b2d6943c123619e04847fb0dc" ]
after
[ "https://git.kernel.org/stable/c/bf1d2ed84b3162e3b0e0bb7018ac59147da6e975", "https://git.kernel.org/stable/c/a6cfc85c6bf9498aaf1978b503f9663635a1aa22", "https://git.kernel.org/stable/c/4a89352edd8b3e20d1e1fb33f0fc297dd137149f", "https://git.kernel.org/stable/c/c347691e5dc5481b2d6943c123619e04847fb0dc", "https://git.kernel.org/stable/c/34f5a664c34d3cb62f6bec7f4156754594a7d25b" ]
Environment requirements changed
before
[ { "source": "Linux", "statements": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.6.161" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.115" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.60" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.2.14" } ] } ] } ] } ]after
[ { "source": "Linux", "statements": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.6.161" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.115" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.60" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.2.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "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.