{"id":"CVE-2025-23147","title":"i3c: Add NULL pointer check in i3c_master_queue_ibi()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: Add NULL pointer check in i3c_master_queue_ibi()\n\nThe I3C master driver may receive an IBI from a target device that has not\nbeen probed yet. In such cases, the ma…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 1b54faa5f47fa7c642179744aeff03f0810dc62e","Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 09359e7c8751961937cb5fc50220969b0a4e1058","Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 3ba402610843d7d15c7f3966a461deeeaff7fba4","Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < d83b0c03ef8fbea2f03029a1cc1f5041f0e1d47f","Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 6871a676aa534e8f218279672e0445c725f81026","Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < e6bba328578feb58c614c11868c259b40484c5fa","Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < fe4a4fc179b7898055555a11685915473588392e","Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < ff9d61db59bb27d16d3f872bff2620d50856b80c","Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < bd496a44f041da9ef3afe14d1d6193d460424e91","Linux 5.0"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:39:36.546486Z"},"published":"2025-05-01","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:41:52.080Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-23147","references":[{"url":"https://git.kernel.org/stable/c/1b54faa5f47fa7c642179744aeff03f0810dc62e"},{"url":"https://git.kernel.org/stable/c/09359e7c8751961937cb5fc50220969b0a4e1058"},{"url":"https://git.kernel.org/stable/c/3ba402610843d7d15c7f3966a461deeeaff7fba4"},{"url":"https://git.kernel.org/stable/c/d83b0c03ef8fbea2f03029a1cc1f5041f0e1d47f"},{"url":"https://git.kernel.org/stable/c/6871a676aa534e8f218279672e0445c725f81026"},{"url":"https://git.kernel.org/stable/c/e6bba328578feb58c614c11868c259b40484c5fa"},{"url":"https://git.kernel.org/stable/c/fe4a4fc179b7898055555a11685915473588392e"},{"url":"https://git.kernel.org/stable/c/ff9d61db59bb27d16d3f872bff2620d50856b80c"},{"url":"https://git.kernel.org/stable/c/bd496a44f041da9ef3afe14d1d6193d460424e91"}],"tags":["cve.org"],"epss":0.00214,"epssPercentile":0.11806,"ingestedAt":"2026-11-05T22:38:31.864Z","slug":"CVE-2025-23147","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ni3c: Add NULL pointer check in i3c_master_queue_ibi()\n\nThe I3C master driver may receive an IBI from a target device that has not\nbeen probed yet. In such cases, the master calls `i3c_master_queue_ibi()`\nto queue an IBI work task, leading to \"Unable to handle kernel read from\nunreadable memory\" and resulting in a kernel panic.\n\nTypical IBI handling flow:\n1. The I3C master scans target devices and probes their respective drivers.\n2. The target device driver calls `i3c_device_request_ibi()` to enable IBI\n   and assigns `dev->ibi = ibi`.\n3. The I3C master receives an IBI from the target device and calls\n   `i3c_master_queue_ibi()` to queue the target device driver’s IBI\n   handler task.\n\nHowever, since target device events are asynchronous to the I3C probe\nsequence, step 3 may occur before step 2, causing `dev->ibi` to be `NULL`,\nleading to a kernel panic.\n\nAdd a NULL pointer check in `i3c_master_queue_ibi()` to prevent accessing\nan uninitialized `dev->ibi`, ensuring stability.\n\n## Affected\n\n- `Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 1b54faa5f47fa7c642179744aeff03f0810dc62e`\n- `Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 09359e7c8751961937cb5fc50220969b0a4e1058`\n- `Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 3ba402610843d7d15c7f3966a461deeeaff7fba4`\n- `Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < d83b0c03ef8fbea2f03029a1cc1f5041f0e1d47f`\n- `Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 6871a676aa534e8f218279672e0445c725f81026`\n- `Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < e6bba328578feb58c614c11868c259b40484c5fa`\n- `Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < fe4a4fc179b7898055555a11685915473588392e`\n- `Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < ff9d61db59bb27d16d3f872bff2620d50856b80c`\n- `Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < bd496a44f041da9ef3afe14d1d6193d460424e91`\n- `Linux 5.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}