Answer in brief
CVE-2026-72151 records a High severity (CVSS 8.4) vulnerability in tpm: tpm2-sessions: wait for async KPP completion in tpm_buf_append_salt. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1085b8276bb4239daa7008f0dcd5c973e4bd690f <111e520efbe82b324bc42b1999b723c0619eea6d || >=1085b8276bb4239daa7008f0dcd5c973e4bd690f <934d1cd40e2893bf7a041b54f6afd1c008d7a21c || >=1085b8276bb4239daa7008f0dcd5c973e4bd690f <493333f167926c7adab8e7563e21ad71d8af84fa || >=1085b8276bb4239daa7008f0dcd5c973e4bd690f <73851a7c43dfa52d2ed9415889b33daf85da0ed9 | 111e520efbe82b324bc42b1999b723c0619eea6d, 934d1cd40e2893bf7a041b54f6afd1c008d7a21c, 493333f167926c7adab8e7563e21ad71d8af84fa, 73851a7c43dfa52d2ed9415889b33daf85da0ed9 |
| Linux/Linuxgeneric | 6.10 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: tpm: tpm2-sessions: wait for async KPP completion in tpm_buf_append_salt tpm_buf_append_salt() in drivers/char/tpm/tpm2-sessions.c calls crypto_kpp_generate_public_key() and crypto_kpp_compute_shared_secret() without installing a completion callback, discards both return values, and immediately frees the kpp_request via kpp_request_free(). When the resolved ecdh-nist-p256 KPP backend is asynchronous (atmel-ecc, HPRE, keembay-ocs), either operation returns -EINPROGRESS and the deferred completion worker dereferences the freed request. The path fires automatically from the hwrng_fillfn kernel thread via tpm_get_random -> tpm2_get_random -> tpm2_start_auth_session -> tpm_buf_append_salt on every entropy poll, without any userland action. Install crypto_req_done as the completion callback, wrap both KPP operations in crypto_wait_req(), and propagate errors to the caller. The wait is a no-op for synchronous backends.
Quoted source text, attributed separately from HOL analysis.