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CVE-2024-46745

Input: uinput - reject requests with unreasonable number of slots

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.19.322, 5.4.284, 5.10.226, 5.15.167, 6.1.110, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From 38e7afe96c7c0ad900824911c61fdb04078033dc · fixed in 9c6d189f0c1c59ba9a32326ec82a0b367a3cd47b; From 38e7afe96c7c0ad900824911c61fdb04078033dc · fixed in 597ff930296c4c8fc6b6a536884d4f1a7187ec70; From 38e7afe96c7c0ad900824911c61fdb04078033dc · fixed in 51fa08edd80003db700bdaa099385c5900d27f4b; From 38e7afe96c7c0ad900824911c61fdb04078033dc · fixed in 9719687398dea8a6a12a10321a54dd75eec7ab2d; From 38e7afe96c7c0ad900824911c61fdb04078033dc · fixed in 61df76619e270a46fd427fbdeb670ad491c42de2; From 38e7afe96c7c0ad900824911c61fdb04078033dc · fixed in a4858b00a1ec57043697fb935565fe267f161833; From 38e7afe96c7c0ad900824911c61fdb04078033dc · fixed in d76fc0f0b18d49b7e721c9e4975ef4bffde2f3e7; From 38e7afe96c7c0ad900824911c61fdb04078033dc · fixed in 206f533a0a7c683982af473079c4111f4a0f9f5e

  • Linux Linux

    2.6.36

  • KernelLinux

    From 2.6.36 · fixed in 4.19.322; From 4.20.0 · fixed in 5.4.284; From 5.5.0 · fixed in 5.10.226; From 5.11.0 · fixed in 5.15.167; From 5.16.0 · fixed in 6.1.110; From 6.2.0 · fixed in 6.6.51; From 6.7.0 · fixed in 6.10.10

References 8

git.kernel.org