{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-90403", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.811Z", "datePublished": "2026-09-17T16:09:32.824Z", "dateUpdated": "2026-10-19T09:03:07.825Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:03:07.825Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtlwifi: pci: fix error path in rtl_pci_probe()\n\nIn the last error path in rtl_pci_probe(), the cleanup functions are\nskipped due to a wrong goto label. Moreover, the successful call to\nrtl_init_rfkill(), ieee80211_register_hw(), rtl_debug_add_one() have to\nbe reverted. Fix this issue by updating the labels and adding the\nrelevant cleanup functions to the last error path." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The UAF is only on rtl_pci_probe()'s last error path, when rtl_pci_intr_mode_decide() fails and the old code jumped to fail3. That path is reached from local_pci_probe() as the .probe of rtl8192ce/rtl8188ee/rtl8192ee/rtl8723be and related pci_driver tables (e.g. Realtek 0x8191/0x8178). 802.11 frames never enter rtl_pci_probe.\nAC:H - The only trigger is pci_enable_msi() or request_irq(pdev->irq, _rtl_pci_interrupt, IRQF_SHARED) failing after ieee80211_register_hw() has already succeeded. pdev->irq is assigned by the host PCI/ACPI code, and the subsequent irqaction kzalloc is tiny compared with earlier ring and wiphy allocations, so an attacker cannot reliably force that failure.\nPR:L - Once fail3 has run ieee80211_free_hw() on the still-registered hw, the leftover default wlan vif from ieee80211_if_add(), cfg80211 wiphy, inetaddr notifiers, and rfkill poll are reachable via nl80211 or any netns address change without init-namespace root or PCI sysfs bind.\nUI:N - No victim must mount media or associate to a network; after the failed probe unwind, the attacker’s own nl80211 use of the leftover wlan vif, an inetaddr change, or cfg80211_rfkill_poll touches the still-registered ieee80211_local.\nS:U - ieee80211_free_hw() frees the still-registered ieee80211_local/wiphy while mac80211 still holds it; impact is host-kernel heap corruption, not a VM, IOMMU, or sandbox escape.\nC:H - fail3 calls ieee80211_free_hw() without ieee80211_unregister_hw(), so cfg80211_rfkill_poll → ieee80211_rfkill_poll and nl80211 still dereference the kfree'd ieee80211_local, wiphy bands, and default STA vif, a UAF read primitive.\nI:H - The leftover objects are written by ieee80211_ifa_changed (inetaddr notifier), mac80211 workqueues never torn down by ieee80211_unregister_hw(), and rtl_op_rfkill_poll via wiphy_rfkill_start_polling, enabling UAF writes and control-flow hijack.\nA:H - ieee80211_free_hw() without ieee80211_unregister_hw() leaves mac80211 workqueues, inetaddr notifiers, the default wlan vif, and rfkill polling running against freed ieee80211_local, which oopses or panics on the next access." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/realtek/rtlwifi/pci.c" ], "versions": [ { "version": "0c8173385e549f95cd80c3fff5aab87b4f881d8d", "lessThan": "2634998247d24be34ba16a7666f31815ef1da00b", "status": "affected", "versionType": "git" }, { "version": "0c8173385e549f95cd80c3fff5aab87b4f881d8d", "lessThan": "cfd6824dd1d151ab3abc00117b3774c8056006e0", "status": "affected", "versionType": "git" }, { "version": "0c8173385e549f95cd80c3fff5aab87b4f881d8d", "lessThan": "86e6187f8525c8f8219eb49e022eba854cc6ab86", "status": "affected", "versionType": "git" }, { "version": "0c8173385e549f95cd80c3fff5aab87b4f881d8d", "lessThan": "aef178ffae5420afdbf46f7133ed28bd4248e15c", "status": "affected", "versionType": "git" }, { "version": "0c8173385e549f95cd80c3fff5aab87b4f881d8d", "lessThan": "b42fcfb097da46f0e86564736ced939e83cb8442", "status": "affected", "versionType": "git" }, { "version": "0c8173385e549f95cd80c3fff5aab87b4f881d8d", "lessThan": "a89818977338ba71194b1ab1d071f0c0848b1e13", "status": "affected", "versionType": "git" }, { "version": "0c8173385e549f95cd80c3fff5aab87b4f881d8d", "lessThan": "1b68b6e529ce75112fab98e89583a76370ca394b", "status": "affected", "versionType": "git" }, { "version": "0c8173385e549f95cd80c3fff5aab87b4f881d8d", "lessThan": "3c2999d13eeb222ae56631aeb7ca248090f2b210", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/realtek/rtlwifi/pci.c" ], "versions": [ { "version": "2.6.38", "status": "affected" }, { "version": "0", "lessThan": "2.6.38", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "5.10.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "5.15.221" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.1.188" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.6.157" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.12.110" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "6.18.52" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "7.2.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.38", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/2634998247d24be34ba16a7666f31815ef1da00b" }, { "url": "https://git.kernel.org/stable/c/cfd6824dd1d151ab3abc00117b3774c8056006e0" }, { "url": "https://git.kernel.org/stable/c/86e6187f8525c8f8219eb49e022eba854cc6ab86" }, { "url": "https://git.kernel.org/stable/c/aef178ffae5420afdbf46f7133ed28bd4248e15c" }, { "url": "https://git.kernel.org/stable/c/b42fcfb097da46f0e86564736ced939e83cb8442" }, { "url": "https://git.kernel.org/stable/c/a89818977338ba71194b1ab1d071f0c0848b1e13" }, { "url": "https://git.kernel.org/stable/c/1b68b6e529ce75112fab98e89583a76370ca394b" }, { "url": "https://git.kernel.org/stable/c/3c2999d13eeb222ae56631aeb7ca248090f2b210" } ], "title": "wifi: rtlwifi: pci: fix error path in rtl_pci_probe()", "x_generator": { "engine": "bippy-1.2.0" } } } }