CVE-2026-23185 (GCVE-0-2026-23185)
Vulnerability from cvelistv5
Published
2026-02-14 16:27
Modified
2026-10-19 18:25
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mld: cancel mlo_scan_start_wk mlo_scan_start_wk is not canceled on disconnection. In fact, it is not canceled anywhere except in the restart cleanup, where we don't really have to. This can cause an init-after-queue issue: if, for example, the work was queued and then drv_change_interface got executed. This can also cause use-after-free: if the work is executed after the vif is freed.
Impacted products
Vendor Product Version
Linux Linux Version: 9748ad82a9d92b036ff3115207e36e2b9932e354
Version: 9748ad82a9d92b036ff3115207e36e2b9932e354
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The 5-second window is generous and fully attacker-controlled.\\nPR:L - WiFi connection management is available to unprivileged users through NetworkManager, and various automatic interface management paths (driver restart, hardware events) could trigger the vif free without explicit root action.\\nUI:N - No user interaction is required \\u2014 the attacker can trigger the entire sequence (WiFi connection, link activation, disconnection, interface change) programmatically.\\nS:U - The vulnerability and its impact are both within the kernel\u0027s WiFi driver subsystem \\u2014 no security boundary is crossed.\\nC:H - The use-after-free allows reading freed memory that may be reallocated with sensitive data, providing arbitrary kernel memory read primitives through heap spraying techniques.\\nI:H - The use-after-free enables heap spraying to control the freed mld_vif object, providing write primitives and potential control flow hijacking for arbitrary code execution in kernel context.\\nA:H - The use-after-free will cause a kernel crash (oops/panic) when the delayed work accesses the freed mld_vif structure through container_of.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"9748ad82a9d92b036ff3115207e36e2b9932e354\", \"lessThan\": \"9b9f52f052f4953fecd2190ae2dde3aa76d10962\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9748ad82a9d92b036ff3115207e36e2b9932e354\", \"lessThan\": \"5ff641011ab7fb63ea101251087745d9826e8ef5\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/wireless/intel/iwlwifi/mld/iface.c\", \"drivers/net/wireless/intel/iwlwifi/mld/mac80211.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.17\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.17\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.18.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.18.*\"}, {\"status\": \"unaffected\", \"version\": \"6.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/wireless/intel/iwlwifi/mld/iface.c\", \"drivers/net/wireless/intel/iwlwifi/mld/mac80211.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/9b9f52f052f4953fecd2190ae2dde3aa76d10962\"}, {\"url\": \"https://git.kernel.org/stable/c/5ff641011ab7fb63ea101251087745d9826e8ef5\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: iwlwifi: mld: cancel mlo_scan_start_wk\\n\\nmlo_scan_start_wk is not canceled on disconnection. In fact, it is not\\ncanceled anywhere except in the restart cleanup, where we don\u0027t really\\nhave to.\\n\\nThis can cause an init-after-queue issue: if, for example, the work was\\nqueued and then drv_change_interface got executed.\\n\\nThis can also cause use-after-free: if the work is executed after the\\nvif is freed.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.10\", \"versionStartIncluding\": \"6.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.19\", \"versionStartIncluding\": \"6.17\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T12:20:32.502Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-23185\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-19T18:25:34.589Z\", \"dateReserved\": \"2026-01-13T15:37:45.984Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-02-14T16:27:14.815Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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