CVE-2026-53204

{"id": "CVE-2026-53204", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "15847537b623f844d9a08da99ff4568315e1d4f8", "lessThan": "6bc249d324241c64118a3018124798c28e2950f7", "versionType": "git"}, {"status": "affected", "version": "15847537b623f844d9a08da99ff4568315e1d4f8", "lessThan": "bfd2eb9bba548a8f63c3339bb1fb9a2031a42d86", "versionType": "git"}], "programFiles": ["drivers/firmware/stratix10-rsu.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.19"}, {"status": "unaffected", "version": "0", "lessThan": "6.19", "versionType": "semver"}, {"status": "unaffected", "version": "7.0.13", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/firmware/stratix10-rsu.c"], "defaultStatus": "affected"}]}], "published": "2026-06-25T09:16:37.960", "references": [{"url": "https://git.kernel.org/stable/c/6bc249d324241c64118a3018124798c28e2950f7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bfd2eb9bba548a8f63c3339bb1fb9a2031a42d86", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: stratix10-rsu: Fix NULL deref on rsu_send_msg() timeout in probe\n\nrsu_send_msg() can return -ETIMEDOUT when\nwait_for_completion_interruptible_timeout() fires while the SMC call is still\npending. In stratix10_rsu_probe(), the error paths for COMMAND_RSU_DCMF_VERSION,\nCOMMAND_RSU_DCMF_STATUS, COMMAND_RSU_MAX_RETRY and COMMAND_RSU_GET_SPT_TABLE\ncall stratix10_svc_free_channel() - which sets chan->scl to NULL - but then\nfall through and queue the next request on the same channel. The next svc\nkthread that runs will dereference pdata->chan->scl in its receive callback\npath, triggering a NULL pointer dereference identical to the one fixed by\ncommit c45f7263100c (\"firmware: stratix10-rsu: Fix NULL pointer dereference\nwhen RSU is disabled\") for the COMMAND_RSU_STATUS path.\n\nApply the same cleanup pattern to the remaining failure paths: remove the\nasync client, free the channel, and return early so no further messages are\nqueued on a channel whose scl has been cleared.\n\nWhile at it, clean up stratix10_rsu_probe() in two ways without changing\nbehavior:\n\n- Drop redundant zero-initialization of fields already cleared by\n devm_kzalloc(): client.receive_cb, status.* and spt0/1_address\n (INVALID_SPT_ADDRESS is 0x0).\n\n- Replace five identical 3-line error-cleanup blocks\n (stratix10_svc_remove_async_client() + stratix10_svc_free_channel() +\n return ret) with goto labels (remove_async_client, free_channel),\n matching the standard kernel resource-unwinding pattern and making it\n easier to extend the probe sequence without forgetting matching\n cleanup.\n\nAlso move init_completion() next to mutex_init() so sync-primitive\ninitialization is grouped before anything that could trigger a\ncallback.\n\n---\nv2: Add a minor clean-up of the function stratix10_rsu_probe() to have a\n centralize exit for all the rsu_send_async_msg() and rsu_send_msg()."}], "lastModified": "2026-07-02T20:55:42.140", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6A64BF9F-3BCA-42FD-98CB-8F03474D2B1E", "versionEndExcluding": "7.0.13", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B0E8FC71-3952-444C-83E9-718DBBBEC615"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1039E95A-8CC3-4C88-8FF9-5C08EEB861C9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}