{"cve":{"cve_id":"CVE-2026-53158","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"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.","published_at":"2026-06-25T08:38:40.818000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/8fb4a23df5b7c02929b62e5dbc270ec7c42b8134","https://git.kernel.org/stable/c/4bfdf0a9855df55e9e031ca6a25b855820590c70","https://git.kernel.org/stable/c/d5de9cb5355db36438edc621dde3673e3f235767","https://git.kernel.org/stable/c/d77583ca33299fede0c194744ef2284e7ba5b763","https://git.kernel.org/stable/c/5401fb4fe10fac6134c308495df18ed74aebb9c4"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:50.753831Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6f9279f2bf0e37e2f1fb119d8832b8568536a04","version_start_inclusive":true,"version_end":"8fb4a23df5b7c02929b62e5dbc270ec7c42b8134","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6f9279f2bf0e37e2f1fb119d8832b8568536a04:8fb4a23df5b7c02929b62e5dbc270ec7c42b8134"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6f9279f2bf0e37e2f1fb119d8832b8568536a04","version_start_inclusive":true,"version_end":"4bfdf0a9855df55e9e031ca6a25b855820590c70","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6f9279f2bf0e37e2f1fb119d8832b8568536a04:4bfdf0a9855df55e9e031ca6a25b855820590c70"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6f9279f2bf0e37e2f1fb119d8832b8568536a04","version_start_inclusive":true,"version_end":"d5de9cb5355db36438edc621dde3673e3f235767","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6f9279f2bf0e37e2f1fb119d8832b8568536a04:d5de9cb5355db36438edc621dde3673e3f235767"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6f9279f2bf0e37e2f1fb119d8832b8568536a04","version_start_inclusive":true,"version_end":"d77583ca33299fede0c194744ef2284e7ba5b763","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6f9279f2bf0e37e2f1fb119d8832b8568536a04:d77583ca33299fede0c194744ef2284e7ba5b763"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"f6f9279f2bf0e37e2f1fb119d8832b8568536a04","version_start_inclusive":true,"version_end":"5401fb4fe10fac6134c308495df18ed74aebb9c4","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:f6f9279f2bf0e37e2f1fb119d8832b8568536a04:5401fb4fe10fac6134c308495df18ed74aebb9c4"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.1","version_start_inclusive":true,"version_end":"5.1","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.1:5.1"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"5.1","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:5.1"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.143","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.143:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.94","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.94:6.12.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.36","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.36:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.13","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.13:7.0.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.1","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.1:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/8fb4a23df5b7c02929b62e5dbc270ec7c42b8134","source_type":"MISC","tags":[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published","source":null}]}