CVE-2026-45871: Linux kernel · tpm: st33zp24: Fix missing cleanup on get_burstcount() error
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in ec15eb67fe9df87981b4829b901ec254273ca483 : update Linux kernel when convenient.
Data as of 6 Nov 2026, 16:06 UTC
Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-06.
- Patch
- Available – fixed in ec15eb67fe9df87981b4829b901ec254273ca483, e0ce3da82341fcd6194175f1837946b2a894c625, cc09d55f519e15355de343264a22ac6682b8305e +5
Exploitation evidence
Disclosed: evidence found.
CVE published 27 May 2026
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 6 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
AI-suggested
A fix is available in the Linux kernel as indicated by the fixed commit versions. Users should update to a kernel version that includes these fixes to ensure proper cleanup on get_burstcount() errors.
Description
A vulnerability in the Linux kernel's TPM driver for the ST33ZP24 chip was fixed. The issue involved missing cleanup when get_burstcount() returned an error, causing the function st33zp24_send() to return without releasing a previously acquired locality. This could lead to resource locking issues.
References
- git.kernel.org/stable/c/e0ce3da82341fcd6194175f1837946b2a894c625 (opens in a new tab)
- git.kernel.org/stable/c/7687133509cf66ced120b667fefd21f80bf17993 (opens in a new tab)
- git.kernel.org/stable/c/1256c6dc96d1e687e6e9b63088156ed07411b00c (opens in a new tab)
- git.kernel.org/stable/c/a51cff9be046e13e1c1b2fe45d5c48b582ec9b8c (opens in a new tab)
- git.kernel.org/stable/c/cc09d55f519e15355de343264a22ac6682b8305e (opens in a new tab)
- git.kernel.org/stable/c/ec15eb67fe9df87981b4829b901ec254273ca483 (opens in a new tab)
- git.kernel.org/stable/c/4fffb77d35d038f146e6192da583dbe4971d869e (opens in a new tab)
- git.kernel.org/stable/c/3e91b44c93ad2871f89fc2a98c5e4fe6ca5db3d9 (opens in a new tab)