CVE Catalog

CVE-2026-72082

Low risk· EPSS 12%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.22%

12th percentile - higher than 12% of all known CVEs

Summary

In the Linux kernel, in the SCSI elx efct driver, a reference leak was detected in efct_hw_io_abort(). When request tag allocation fails, the error path returns -ENOSPC without releasing the reference obtained earlier via kref_get_unless_zero(), causing a permanent reference leak on the io_to_abort object. Additionally, the abort_in_progress flag remains set to true, blocking future abort attempts for the same I/O.

Risk Assessment

The reference leak may lead to memory exhaustion and system instability. Blocking I/O abort attempts could cause device or system hangs.

Recommendation

Apply the Linux kernel patch that adds the missing kref_put() call and resets abort_in_progress to false. Update the system to a kernel version containing this fix.

Other vulnerabilities in Linux kernel

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Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: scsi: elx: efct: Fix refcount leak in efct_hw_io_abort() When efct_hw_reqtag_alloc() fails in efct_hw_io_abort(), the error path returns -ENOSPC without releasing the reference obtained via kref_get_unless_zero() earlier in the function. All other error paths correctly drop the reference. This causes a permanent reference leak on the io_to_abort object. Additionally, the abort_in_progress flag is left set to true on this path, which means future abort attempts for the same I/O will immediately return -EINPROGRESS even though the abort was never submitted, effectively blocking recovery. Fix this by adding the missing kref_put() call and reset abort_in_progress to false, matching the cleanup done in the efct_hw_wq_write() failure path below.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS