CVE-2026-31445 Vulnerability Analysis & Exploit Details

CVE-2026-31445
Vulnerability Scoring

5.5

/10

Significant Risk

Security assessments indicate that CVE-2026-31445 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

Attack Complexity: Low
Exploits can be performed without significant complexity or special conditions.
Attack Vector: Local
Vulnerability requires local system access.
Privileges Required: Low
Some privileges are necessary to exploit the vulnerability.
Scope: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: None
No user interaction is necessary for exploitation.

CVE-2026-31445 Details

Status: Analyzed

Last updated: 🕖 07 May 2026, 19:23 UTC
Originally published on: 🕑 22 Apr 2026, 14:16 UTC

Time between publication and last update: 15 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVE-2026-31445 Vulnerability Summary

CVE-2026-31445: In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: avoid use of half-online-committed context One major usage of damon_call() is online DAMON parameters update. It is done by calling damon_commit_ctx() inside the damon_call() callback function. damon_commit_ctx() can fail for two reasons: 1) invalid parameters and 2) internal memory allocation failures. In case of failures, the damon_ctx that attempted to be updated (commit destination) can be partially updated (or, corrupted from a perspective), and therefore shouldn't be used anymore. The function only ensures the damon_ctx object can safely deallocated using damon_destroy_ctx(). The API callers are, however, calling damon_commit_ctx() only after asserting the parameters are valid, to avoid damon_commit_ctx() fails due to invalid input parameters. But it can still theoretically fail if the internal memory allocation fails. In the case, DAMON may run with the partially updated damon_ctx. This can result in unexpected behaviors including even NULL pointer dereference in case of damos_commit_dests() failure [1]. Such allocation failure is arguably too small to fail, so the real world impact would be rare. But, given the bad consequence, this needs to be fixed. Avoid such partially-committed (maybe-corrupted) damon_ctx use by saving the damon_commit_ctx() failure on the damon_ctx object. For this, introduce damon_ctx->maybe_corrupted field. damon_commit_ctx() sets it when it is failed. kdamond_call() checks if the field is set after each damon_call_control->fn() is executed. If it is set, ignore remaining callback requests and return. All kdamond_call() callers including kdamond_fn() also check the maybe_corrupted field right after kdamond_call() invocations. If the field is set, break the kdamond_fn() main loop so that DAMON sill doesn't use the context that might be corrupted. [sj@kernel.org: let kdamond_call() with cancel regardless of maybe_corrupted]

Assessing the Risk of CVE-2026-31445

Access Complexity Graph

The exploitability of CVE-2026-31445 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-31445

CVE-2026-31445 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-31445, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-31445, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: None
CVE-2026-31445 has no significant impact on data confidentiality.
Integrity: None
CVE-2026-31445 poses no threat to data integrity.
Availability: High
CVE-2026-31445 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-31445 References

External References

CWE Common Weakness Enumeration

CWE-476

Vulnerable Configurations

cpe:2.3:o:linux:linux_kernel:6.15:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.12:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16.12:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.12:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.12:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.13:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17.13:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.17:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18:-:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.18.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.13:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.13:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.14:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.14:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.16:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.16:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.17:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.17:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.18:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.18:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.19:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.19:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.20:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.18.20:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*

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