{"id":"CVE-2026-46047","state":"PUBLISHED","title":"net: qrtr: ns: Fix use-after-free in driver remove()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: ns: Fix use-after-free in driver remove()\n\nIn the remove callback, if a packet arrives after destroy_workqueue() is\ncalled, but before sock_release(), the qrtr_ns_data_ready() callback will\ntry to queue the work, causing use-after-free issue.\n\nFix this issue by saving the default 'sk_data_ready' callback during\nqrtr_ns_init() and use it to replace the qrtr_ns_data_ready() callback at\nthe start of remove(). This ensures that even if a packet arrives after\ndestroy_workqueue(), the work struct will not be dereferenced.\n\nNote that it is also required to ensure that the RX threads are completed\nbefore destroying the workqueue, because the threads could be using the\nqrtr_ns_data_ready() callback.","publishedAt":"2026-05-27T12:57:03.471Z","updatedAt":"2026-10-15T01:20:13.330Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"65168712c216584ff482a7d1a67589f2079b2634","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"dff081c3602f2fd810f69ef47945a226980dd05d","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"4ae0bd51bf7079e9c2a06b5de0ae04ba70d10167","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"0f313eb6a8f6dffa491373cf3afab979fa1c02f4","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"db3c60ec772de30acae92d560dfcc5258e58dbe8","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"2e127ceb1c415e246076d8e09e23e443a7a2038f","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"f96779e916576e81430ebb326baff6e433fef8ae","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"7809fea20c9404bfcfa6112ec08d1fe1d3520beb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/qrtr/ns.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.7","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.86","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.27","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/qrtr/ns.c"]}],"references":["https://git.kernel.org/stable/c/65168712c216584ff482a7d1a67589f2079b2634","https://git.kernel.org/stable/c/dff081c3602f2fd810f69ef47945a226980dd05d","https://git.kernel.org/stable/c/4ae0bd51bf7079e9c2a06b5de0ae04ba70d10167","https://git.kernel.org/stable/c/0f313eb6a8f6dffa491373cf3afab979fa1c02f4","https://git.kernel.org/stable/c/db3c60ec772de30acae92d560dfcc5258e58dbe8","https://git.kernel.org/stable/c/2e127ceb1c415e246076d8e09e23e443a7a2038f","https://git.kernel.org/stable/c/f96779e916576e81430ebb326baff6e433fef8ae","https://git.kernel.org/stable/c/7809fea20c9404bfcfa6112ec08d1fe1d3520beb","https://cert-portal.siemens.com/productcert/html/ssa-784472.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46047.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46047","state":"PUBLISHED","datePublished":"2026-05-27T12:57:03.471Z","dateUpdated":"2026-10-15T01:20:13.330Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.094Z"},"containers":{"cna":{"title":"net: qrtr: ns: Fix use-after-free in driver remove()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: ns: Fix use-after-free in driver remove()\n\nIn the remove callback, if a packet arrives after destroy_workqueue() is\ncalled, but before sock_release(), the qrtr_ns_data_ready() callback will\ntry to queue the work, causing use-after-free issue.\n\nFix this issue by saving the default 'sk_data_ready' callback during\nqrtr_ns_init() and use it to replace the qrtr_ns_data_ready() callback at\nthe start of remove(). This ensures that even if a packet arrives after\ndestroy_workqueue(), the work struct will not be dereferenced.\n\nNote that it is also required to ensure that the RX threads are completed\nbefore destroying the workqueue, because the threads could be using the\nqrtr_ns_data_ready() callback."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"65168712c216584ff482a7d1a67589f2079b2634","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"dff081c3602f2fd810f69ef47945a226980dd05d","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"4ae0bd51bf7079e9c2a06b5de0ae04ba70d10167","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"0f313eb6a8f6dffa491373cf3afab979fa1c02f4","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"db3c60ec772de30acae92d560dfcc5258e58dbe8","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"2e127ceb1c415e246076d8e09e23e443a7a2038f","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"f96779e916576e81430ebb326baff6e433fef8ae","versionType":"git"},{"version":"0c2204a4ad710d95d348ea006f14ba926e842ffd","status":"affected","lessThan":"7809fea20c9404bfcfa6112ec08d1fe1d3520beb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/qrtr/ns.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.7","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.86","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.27","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/qrtr/ns.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/65168712c216584ff482a7d1a67589f2079b2634"},{"url":"https://git.kernel.org/stable/c/dff081c3602f2fd810f69ef47945a226980dd05d"},{"url":"https://git.kernel.org/stable/c/4ae0bd51bf7079e9c2a06b5de0ae04ba70d10167"},{"url":"https://git.kernel.org/stable/c/0f313eb6a8f6dffa491373cf3afab979fa1c02f4"},{"url":"https://git.kernel.org/stable/c/db3c60ec772de30acae92d560dfcc5258e58dbe8"},{"url":"https://git.kernel.org/stable/c/2e127ceb1c415e246076d8e09e23e443a7a2038f"},{"url":"https://git.kernel.org/stable/c/f96779e916576e81430ebb326baff6e433fef8ae"},{"url":"https://git.kernel.org/stable/c/7809fea20c9404bfcfa6112ec08d1fe1d3520beb"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-14T17:50:30.115Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.12.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.18.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - 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