Input: uinput - reject requests with unreasonable number of slots

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-46745
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-09-18 08:15:03 UTC
Updated2026-05-12 12:17:11 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: Input: uinput - reject requests with unreasonable number of slots When exercising uinput interface syzkaller may try setting up device with a really large number of slots, which causes memory allocation failure in input_mt_init_slots(). While this allocation failure is handled properly and request is rejected, it results in syzkaller reports. Additionally, such request may put undue burden on the system which will try to free a lot of memory for a bogus request. Fix it by limiting allowed number of slots to 100. This can easily be extended if we see devices that can track more than 100 contacts.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-770

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 38e7afe96c7c0ad900824911c61fdb04078033dc 9c6d189f0c1c59ba9a32326ec82a0b367a3cd47b git Not specified
CNA Linux Linux affected 38e7afe96c7c0ad900824911c61fdb04078033dc 597ff930296c4c8fc6b6a536884d4f1a7187ec70 git Not specified
CNA Linux Linux affected 38e7afe96c7c0ad900824911c61fdb04078033dc 51fa08edd80003db700bdaa099385c5900d27f4b git Not specified
CNA Linux Linux affected 38e7afe96c7c0ad900824911c61fdb04078033dc 9719687398dea8a6a12a10321a54dd75eec7ab2d git Not specified
CNA Linux Linux affected 38e7afe96c7c0ad900824911c61fdb04078033dc 61df76619e270a46fd427fbdeb670ad491c42de2 git Not specified
CNA Linux Linux affected 38e7afe96c7c0ad900824911c61fdb04078033dc a4858b00a1ec57043697fb935565fe267f161833 git Not specified
CNA Linux Linux affected 38e7afe96c7c0ad900824911c61fdb04078033dc d76fc0f0b18d49b7e721c9e4975ef4bffde2f3e7 git Not specified
CNA Linux Linux affected 38e7afe96c7c0ad900824911c61fdb04078033dc 206f533a0a7c683982af473079c4111f4a0f9f5e git Not specified
CNA Linux Linux affected 2.6.36 Not specified
CNA Linux Linux unaffected 2.6.36 semver Not specified
CNA Linux Linux unaffected 4.19.322 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.284 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.226 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.167 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.110 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.51 6.6.* semver Not specified
CNA Linux Linux unaffected 6.10.10 6.10.* semver Not specified
CNA Linux Linux unaffected 6.11 * original_commit_for_fix Not specified
ADP Siemens RUGGEDCOM RST2428P affected V3.2 custom Not specified
ADP Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 Family affected V3.2 custom Not specified
ADP Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 Family affected V3.2 custom Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/9719687398dea8a6a12a10321a54dd75eec7ab2d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/51fa08edd80003db700bdaa099385c5900d27f4b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/61df76619e270a46fd427fbdeb670ad491c42de2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/9c6d189f0c1c59ba9a32326ec82a0b367a3cd47b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/10/msg00003.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
cert-portal.siemens.com/productcert/html/ssa-355557.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
lists.debian.org/debian-lts-announce/2025/01/msg00001.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/206f533a0a7c683982af473079c4111f4a0f9f5e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/597ff930296c4c8fc6b6a536884d4f1a7187ec70 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d76fc0f0b18d49b7e721c9e4975ef4bffde2f3e7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a4858b00a1ec57043697fb935565fe267f161833 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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