CVE-2024-38615: Linux kernel · cpufreq: exit() callback is optional
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium · fixed in 5.4.0-1130.140~18.04.1 : update Linux kernel when convenient.
Data as of 12 Nov 2026, 19:04 UTC
- Patch
- Available – fixed in 5.4.0-1130.140~18.04.1, 5.4.0-1135.142~18.04.1, 5.4.0-1134.143~18.04.1 +73
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 19 Jun 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 12 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Patches and advisories
- ubuntu.com/security/notices/USN-6949-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-6951-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-6952-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-6953-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-6955-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-6949-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-6952-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-6951-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-6951-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-6951-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-6979-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7007-1 (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-ibmpkg:deb/ubuntu/linux-ibm?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.
Description
In the Linux kernel, the following vulnerability has been resolved: cpufreq: exit() callback is optional The exit() callback is optional and shouldn't be called without checking a valid pointer first. Also, we must clear freq_table pointer even if the exit() callback isn't present.
References
- ubuntu.com/security/CVE-2024-38615 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2024-38615 (opens in a new tab)
- git.kernel.org/linus/b8f85833c05730d631576008daaa34096bc7f3ce (opens in a new tab)
- git.kernel.org/stable/c/2d730b465e377396d2a09a53524b96b111f7ccb6 (opens in a new tab)
- git.kernel.org/stable/c/dfc56ff5ec9904c008e9376d90a6d7e2d2bec4d3 (opens in a new tab)
- git.kernel.org/stable/c/35db5e76d5e9f752476df5fa0b9018a2398b0378 (opens in a new tab)
- git.kernel.org/stable/c/8bc9546805e572ad101681437a49939f28777273 (opens in a new tab)
- git.kernel.org/stable/c/3e99f060cfd2e36504d62c9132b453ade5027e1c (opens in a new tab)
- git.kernel.org/stable/c/ae37ebca325097d773d7bb6ec069123b30772872 (opens in a new tab)
- git.kernel.org/stable/c/a8204d1b6ff762d2171d365c2c8560285d0a233d (opens in a new tab)
- git.kernel.org/stable/c/b8f85833c05730d631576008daaa34096bc7f3ce (opens in a new tab)
- ubuntu.com/security/notices/USN-6949-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-6951-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-6952-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-6953-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-6955-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-6949-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-6952-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-6951-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-6951-3 (opens in a new tab)