CVE-2024-46745: Linux kernel · Input: uinput – reject requests with unreasonable number of slots
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium · fixed in 5.4.0-1135.145~18.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 23:59 UTC
- Patch
- Available – fixed in 5.4.0-1135.145~18.04.1, 5.4.0-1140.147~18.04.1, 5.4.0-1139.148~18.04.1 +75
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Patches and advisories
- ubuntu.com/security/notices/USN-7088-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7088-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7088-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7088-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-7100-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7100-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7088-5 (opens in a new tab)
- ubuntu.com/security/notices/USN-7119-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7123-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7144-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7154-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7155-1 (opens in a new tab)
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 24.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-gkeoppkg:deb/ubuntu/linux-gkeop?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and has been applied in Linux kernel versions starting from 5.4.0-1135.145~18.04.1 and later. Users should update to these fixed versions or later to remediate the issue. No additional mitigation is required as the fix properly limits the number of slots and handles allocation failures.
Description
A vulnerability in the Linux kernel's uinput interface allowed requests with an unreasonably large number of slots, causing memory allocation failures and undue system resource burden. The issue was addressed by limiting the number of allowed slots to 100. This fix prevents excessive memory allocation attempts that could degrade system stability.
References
- ubuntu.com/security/CVE-2024-46745 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2024-46745 (opens in a new tab)
- git.kernel.org/linus/206f533a0a7c683982af473079c4111f4a0f9f5e (opens in a new tab)
- git.kernel.org/stable/c/9c6d189f0c1c59ba9a32326ec82a0b367a3cd47b (opens in a new tab)
- git.kernel.org/stable/c/597ff930296c4c8fc6b6a536884d4f1a7187ec70 (opens in a new tab)
- git.kernel.org/stable/c/51fa08edd80003db700bdaa099385c5900d27f4b (opens in a new tab)
- git.kernel.org/stable/c/9719687398dea8a6a12a10321a54dd75eec7ab2d (opens in a new tab)
- git.kernel.org/stable/c/61df76619e270a46fd427fbdeb670ad491c42de2 (opens in a new tab)
- git.kernel.org/stable/c/a4858b00a1ec57043697fb935565fe267f161833 (opens in a new tab)
- git.kernel.org/stable/c/d76fc0f0b18d49b7e721c9e4975ef4bffde2f3e7 (opens in a new tab)
- git.kernel.org/stable/c/206f533a0a7c683982af473079c4111f4a0f9f5e (opens in a new tab)
- ubuntu.com/security/notices/USN-7088-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7088-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7088-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7088-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-7100-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7100-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7088-5 (opens in a new tab)
- ubuntu.com/security/notices/USN-7119-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7123-1 (opens in a new tab)