CVE-2025-38300: Linux kernel · crypto: sun8i-ce-cipher – fix error handling in sun8i_ce_cipher_prepare()
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium · fixed in 6.8.0-1046.49~22.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.8.0-1046.49~22.04.1, 6.8.0-1051.57~22.04.1, 6.8.0-1047.50~22.04.2 +30
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 10 Jul 2025
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.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde@6.17.0-1017.17?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinuxpkg:deb/ubuntu/linux@6.8.0-100.100?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-awspkg:deb/ubuntu/linux-aws@6.8.0-1046.49?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-aws-6.14pkg:deb/ubuntu/linux-aws-6.14@6.14.0-1013.13~24.04.1?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure@6.8.0-1046.52?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11@6.11.0-1018.18~24.04.1?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 that fixes the error handling in sun8i_ce_cipher_prepare() by adding proper checks before unmapping DMA memory. Users should apply the official Linux kernel updates that include this fix. The Ubuntu security advisory USN-7769-1 confirms that this and other kernel vulnerabilities have been addressed. No additional mitigation steps are indicated beyond applying the vendor-provided patches.
Description
A vulnerability in the Linux kernel's sun8i-ce-cipher crypto driver was fixed by correcting error handling in the sun8i_ce_cipher_prepare() function. The flaw involved improper DMA cleanup on error paths, where the driver could attempt to free DMA memory that was never allocated, potentially causing kernel warnings or crashes. The issue was addressed by ensuring DMA unmapping is only called if the corresponding DMA mapping succeeded.
References
- ubuntu.com/security/CVE-2025-38300 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-38300 (opens in a new tab)
- git.kernel.org/linus/f31adc3e356f7350d4a4d68c98d3f60f2f6e26b3 (opens in a new tab)
- git.kernel.org/stable/c/19d267d9fad00d94ad8477899e38ed7c11f33fb6 (opens in a new tab)
- git.kernel.org/stable/c/4051250e5db489f8ad65fc337e2677b9b568ac72 (opens in a new tab)
- git.kernel.org/stable/c/a0ac3f85b2e3ef529e852f252a70311f9029d5e6 (opens in a new tab)
- git.kernel.org/stable/c/c62b79c1c51303dbcb6edfa4de0ee176f4934c52 (opens in a new tab)
- git.kernel.org/stable/c/f31adc3e356f7350d4a4d68c98d3f60f2f6e26b3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7769-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7770-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7771-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7769-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7769-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7789-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7789-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8028-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8028-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8031-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8028-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8028-4 (opens in a new tab)