CVE-2026-53158

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53158", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.388Z", "datePublished": "2026-06-25T08:38:40.818Z", "dateUpdated": "2026-07-04T11:50:56.161Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-04T11:50:56.161Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: Fix NULL pointer dereference in rpmsg callback\n\nA NULL pointer dereference was observed on Hawi at boot when the DSP\nsends a glink message before fastrpc_rpmsg_probe() has completed\ninitialization:\n\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000178\n pc : _raw_spin_lock_irqsave+0x34/0x8c\n lr : fastrpc_rpmsg_callback+0x3c/0xcc [fastrpc]\n ...\n Call trace:\n _raw_spin_lock_irqsave+0x34/0x8c (P)\n fastrpc_rpmsg_callback+0x3c/0xcc [fastrpc]\n qcom_glink_native_rx+0x538/0x6a4\n qcom_glink_smem_intr+0x14/0x24 [qcom_glink_smem]\n\nThe faulting address 0x178 corresponds to the lock variable inside\nstruct fastrpc_channel_ctx, confirming that cctx is NULL when\nfastrpc_rpmsg_callback() attempts to take the spinlock.\n\nThere are two issues here. First, dev_set_drvdata() is called before\nspin_lock_init() and idr_init(), leaving a window where the callback\ncan retrieve a valid cctx pointer but operate on an uninitialized\nspinlock. Second, the rpmsg channel becomes live as soon as the driver\nis bound, so fastrpc_rpmsg_callback() can fire before dev_set_drvdata()\nis called at all, resulting in dev_get_drvdata() returning NULL.\n\nFix both issues by moving all cctx initialization ahead of\ndev_set_drvdata() so the structure is fully initialized before it\nbecomes visible to the callback, and add a NULL check in\nfastrpc_rpmsg_callback() as a guard against any remaining window."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/misc/fastrpc.c"], "versions": [{"version": "f6f9279f2bf0e37e2f1fb119d8832b8568536a04", "lessThan": "a3d91218ccca1e990bfb737b5a6da23f0afba22b", "status": "affected", "versionType": "git"}, {"version": "f6f9279f2bf0e37e2f1fb119d8832b8568536a04", "lessThan": "0d8c64511fd45690c5326f013710efcb4f73a97e", "status": "affected", "versionType": "git"}, {"version": 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"https://git.kernel.org/stable/c/5401fb4fe10fac6134c308495df18ed74aebb9c4"}], "title": "misc: fastrpc: Fix NULL pointer dereference in rpmsg callback", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

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qcom_glink_smem_intr+0x14/0x24 [qcom_glink_smem]\n\nThe faulting address 0x178 corresponds to the lock variable inside\nstruct fastrpc_channel_ctx, confirming that cctx is NULL when\nfastrpc_rpmsg_callback() attempts to take the spinlock.\n\nThere are two issues here. First, dev_set_drvdata() is called before\nspin_lock_init() and idr_init(), leaving a window where the callback\ncan retrieve a valid cctx pointer but operate on an uninitialized\nspinlock. Second, the rpmsg channel becomes live as soon as the driver\nis bound, so fastrpc_rpmsg_callback() can fire before dev_set_drvdata()\nis called at all, resulting in dev_get_drvdata() returning NULL.\n\nFix both issues by moving all cctx initialization ahead of\ndev_set_drvdata() so the structure is fully initialized before it\nbecomes visible to the callback, and add a NULL check in\nfastrpc_rpmsg_callback() as a guard against any remaining window."}], "id": "CVE-2026-53158", "lastModified": "2026-07-07T18:51:08.107", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-06-25T09:16:33.160", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0d8c64511fd45690c5326f013710efcb4f73a97e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/150bf6f1193c69252580c19d3b3cd631ddce61d7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4bfdf0a9855df55e9e031ca6a25b855820590c70"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5401fb4fe10fac6134c308495df18ed74aebb9c4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8fb4a23df5b7c02929b62e5dbc270ec7c42b8134"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a3d91218ccca1e990bfb737b5a6da23f0afba22b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d5de9cb5355db36438edc621dde3673e3f235767"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d77583ca33299fede0c194744ef2284e7ba5b763"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: misc: fastrpc: Fix NULL pointer dereference in rpmsg callback", "id": "2492737", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492737"}, "csaw": false, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel's fastrpc component. This vulnerability occurs due to a NULL pointer dereference when the Digital Signal Processor (DSP) sends a glink message before the fastrpc driver is fully initialized. This can lead to system instability or a denial of service (DoS) condition, as the kernel attempts to access uninitialized memory during an rpmsg callback."], "name": "CVE-2026-53158", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53158\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53158\nhttps://lore.kernel.org/linux-cve-announce/2026062549-CVE-2026-53158-332e@gregkh/T"]}

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