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CVE-2024-46745Input: uinput - reject requests with unreasonable number of slots

Description

In 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.

Timeline

  1. ID reserved

    By Linux

  2. · 7 days later

    Published

  3. · 2 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2024-46745, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.29% · top 79% of all CVEs (13 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Affected products

  • Linux · Linux

    • affected 38e7afe96c7c0ad900824911c61fdb04078033dc – < 9c6d189f0c1c59ba9a32326ec82a0b367a3cd47b
    • affected 38e7afe96c7c0ad900824911c61fdb04078033dc – < 597ff930296c4c8fc6b6a536884d4f1a7187ec70
    • affected 38e7afe96c7c0ad900824911c61fdb04078033dc – < 51fa08edd80003db700bdaa099385c5900d27f4b
    • affected 38e7afe96c7c0ad900824911c61fdb04078033dc – < 9719687398dea8a6a12a10321a54dd75eec7ab2d
    • affected 38e7afe96c7c0ad900824911c61fdb04078033dc – < 61df76619e270a46fd427fbdeb670ad491c42de2
    • affected 38e7afe96c7c0ad900824911c61fdb04078033dc – < a4858b00a1ec57043697fb935565fe267f161833
    • affected 38e7afe96c7c0ad900824911c61fdb04078033dc – < d76fc0f0b18d49b7e721c9e4975ef4bffde2f3e7
    • affected 38e7afe96c7c0ad900824911c61fdb04078033dc – < 206f533a0a7c683982af473079c4111f4a0f9f5e

  • Linux · Linux

    • affected 2.6.36
    • unaffected < 2.6.36
    • unaffected 4.19.322 – ≤ 4.19.*
    • unaffected 5.4.284 – ≤ 5.4.*
    • unaffected 5.10.226 – ≤ 5.10.*
    • unaffected 5.15.167 – ≤ 5.15.*
    • unaffected 6.1.110 – ≤ 6.1.*
    • unaffected 6.6.51 – ≤ 6.6.*
    • unaffected 6.10.10 – ≤ 6.10.*
    • unaffected 6.11 – ≤ *

References

References13

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .