{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46152","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.101Z","datePublished":"2026-05-28T09:36:08.211Z","dateUpdated":"2026-08-05T12:30:04.634Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T12:30:04.634Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: drop stray 'static' from fast-RX rx_result\n\nieee80211_invoke_fast_rx() is documented as safe for parallel RX, but\nits per-invocation rx_result is declared static. Concurrent callers then\nshare one instance and can overwrite each other's result between\nieee80211_rx_mesh_data() and the switch on res.\n\nThat can make a packet that was queued or consumed by\nieee80211_rx_mesh_data() fall through into ieee80211_rx_8023(), or make\na packet that should continue return as queued.\n\nMake res an automatic variable so each invocation keeps its own result."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:A - The vulnerability is in the mac80211 WiFi mesh receive path, triggered by 802.11s mesh data frames received over the air from a radio-range mesh peer, matching the Adjacent (same wireless segment) attack vector.\nAC:L - Exploitation is a race on the shared `static res`, but the attacker creates the contention by flooding mesh data frames that common RSS/multi-queue WiFi hardware (iwlwifi, ath11k/12k, mt76) processes concurrently across CPUs; the attacker controls both sides of the race.\nPR:N - The attacker holds no privileges on the target host, and in an open (unauthenticated) mesh — the most severe reasonable deployment — any radio-range device can peer or inject frames appearing from a peered station to reach the fast-RX path.\nUI:N - The vulnerable path runs automatically on frame reception; no action by any local user is required.\nS:U - The corruption stays within the kernel's own security authority; there is no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The clobbered result causes a consumed/in-flight skb to be reprocessed (use-after-free / concurrent skb use), and a UAF gives the attacker control over freed object contents enabling arbitrary kernel memory disclosure.\nI:H - The same use-after-free on the skb enables heap manipulation and arbitrary write primitives, allowing modification of kernel memory and potential control-flow hijack.\nA:H - The double-use/use-after-free of the skb readily causes kernel oops/panic, and the misrouting of receive results also corrupts the RX/TX state, producing crashes."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/rx.c"],"versions":[{"version":"3468e1e0c639032a603450f0830ccabfa76f5806","lessThan":"03584528bfffb195e384698af9148b94e42e3f14","status":"affected","versionType":"git"},{"version":"3468e1e0c639032a603450f0830ccabfa76f5806","lessThan":"1739fc31b4de06c5c78ce0741182770fb079091e","status":"affected","versionType":"git"},{"version":"3468e1e0c639032a603450f0830ccabfa76f5806","lessThan":"e131562d6f2b958148c35c98831b007f47f0e3d3","status":"affected","versionType":"git"},{"version":"3468e1e0c639032a603450f0830ccabfa76f5806","lessThan":"3ef44f96ccc3e06e059dec57842e366f0c4b1893","status":"affected","versionType":"git"},{"version":"3468e1e0c639032a603450f0830ccabfa76f5806","lessThan":"7a5b81e0c87a075afd572f659d8eb68c9c4cd2ba","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/rx.c"],"versions":[{"version":"6.4","status":"affected"},{"version":"0","lessThan":"6.4","status":"unaffected","versionType":"semver"},{"version":"6.6.140","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.88","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.30","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.7","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","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":"6.4","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.12.88"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.18.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.0.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/03584528bfffb195e384698af9148b94e42e3f14"},{"url":"https://git.kernel.org/stable/c/1739fc31b4de06c5c78ce0741182770fb079091e"},{"url":"https://git.kernel.org/stable/c/e131562d6f2b958148c35c98831b007f47f0e3d3"},{"url":"https://git.kernel.org/stable/c/3ef44f96ccc3e06e059dec57842e366f0c4b1893"},{"url":"https://git.kernel.org/stable/c/7a5b81e0c87a075afd572f659d8eb68c9c4cd2ba"}],"title":"wifi: mac80211: drop stray 'static' from fast-RX rx_result","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","packageName":"kernel","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:6.12.0-211.26.1.el10_2","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"defaultStatus":"affected","packageName":"kernel","product":"Red Hat Enterprise Linux 10.0 Extended Update Support","vendor":"Red 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Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:5.14.0-427.136.1.el9_4","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_eus:9.6"],"defaultStatus":"affected","packageName":"kernel","product":"Red Hat Enterprise Linux 9.6 Extended Update Support","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:5.14.0-570.127.1.el9_6","versionType":"rpm"}]},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"},{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}],"datePublic":"2026-05-28T00:00:00.000Z","descriptions":[{"lang":"en","value":"A flaw was found in the Linux kernel's Wi-Fi (mac80211) subsystem. The `ieee80211_invoke_fast_rx()` function uses a static variable for `rx_result`, which is shared across concurrent calls. This can lead to incorrect processing of Wi-Fi packets, where a packet might be mishandled or its status incorrectly reported. Such issues can result in unexpected network behavior or a denial of service within the wireless communication."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1058","description":"Invokable Control Element in Multi-Thread Context with non-Final Static Storable or Member Element","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-46152"},{"name":"RHBZ#2482563","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2482563"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46152.json"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:44694"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:27288"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:36767"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:38902"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:27789"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:26427"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:26428"}],"solutions":[{"lang":"en","value":"RHSA-2026:44694: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0), Red Hat Enterprise Linux Real Time EUS (v. 10.0), Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)"},{"lang":"en","value":"RHSA-2026:27288: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10), Red Hat Enterprise Linux Real Time (v. 10), Red Hat Enterprise Linux Real Time for NFV (v. 10)"},{"lang":"en","value":"RHSA-2026:36767: Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux BaseOS E4S (v.9.4), Red Hat Enterprise Linux Real Time E4S (v.9.4), Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)"},{"lang":"en","value":"RHSA-2026:38902: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6), Red Hat Enterprise Linux Real Time EUS (v.9.6), Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)"},{"lang":"en","value":"RHSA-2026:27789: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9)"},{"lang":"en","value":"RHSA-2026:26427: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8)"},{"lang":"en","value":"RHSA-2026:26428: Red Hat Enterprise Linux NFV (v. 8), Red Hat Enterprise Linux RT (v. 8)"}],"timeline":[{"lang":"en","time":"2026-05-28T00:00:00.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-05-28T00:00:00.000Z","value":"Made public."}],"title":"kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result","workarounds":[{"lang":"en","value":"To mitigate this issue, disable the Wi-Fi interface if wireless networking is not required. This can be achieved by preventing the `mac80211` kernel module from loading. To blacklist the `mac80211` module: `echo \"blacklist mac80211\" | sudo tee /etc/modprobe.d/blacklist-mac80211.conf`. After modifying the blacklist, regenerate the initramfs and reboot the system for the changes to take effect: `sudo dracut -f -v` and `sudo reboot`. Disabling the `mac80211` module will prevent Wi-Fi functionality on the system."}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-07-29T12:04:50.791Z"}}]}}