{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68411","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-30T09:28:09.391Z","datePublished":"2026-08-10T12:04:31.532Z","dateUpdated":"2026-08-19T16:35:07.403Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-19T16:35:07.403Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: clamp virtio RX length before skb_put\n\nhwsim_virtio_rx_work() passes the virtqueue used-ring length reported by\nthe device straight to skb_put() on a fixed-size receive skb. A backend\nreporting a length larger than the skb tailroom drives skb_put() past the\nbuffer end and hits skb_over_panic() -- a host-triggerable guest panic\n(denial of service).\n\nClamp the length to the skb's available room before skb_put(). A\nconforming device never reports more than the posted buffer size, so valid\nframes are unaffected; a truncated over-report then fails the\nlength/header checks in hwsim_virtio_handle_cmd() and is dropped, so\ntruncating rather than dropping here cannot be turned into a parsing\nproblem."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"versions":[{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"7f9d678b870fca8eaf1d46fa915cba0b1d5b387a","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"909573d6a9b67354fc0515952574564e7c909c62","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"5779e4a33e1666ddfeba43e96e29c4a9e5254ff0","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"82c5a30a66e2a7337d99476c67d6fc1a99c4250e","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"fade308845c89f784da8a6780c1e77258488f1b6","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"6dc76371a9a360c29de00df5b11563102d9d675a","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"99dc05c75acc3c8cde8d89c5371f4b569de5ac62","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"10a2b430f8f06ae14b9590b6f6faa6b588ef0654","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/virtual/mac80211_hwsim_main.c"],"versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","status":"unaffected","versionType":"semver"},{"version":"5.10.265","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.216","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.183","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","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":"5.7","versionEndExcluding":"5.10.265"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.15.216"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.1.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.6.148"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.12.101"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/7f9d678b870fca8eaf1d46fa915cba0b1d5b387a"},{"url":"https://git.kernel.org/stable/c/909573d6a9b67354fc0515952574564e7c909c62"},{"url":"https://git.kernel.org/stable/c/5779e4a33e1666ddfeba43e96e29c4a9e5254ff0"},{"url":"https://git.kernel.org/stable/c/82c5a30a66e2a7337d99476c67d6fc1a99c4250e"},{"url":"https://git.kernel.org/stable/c/fade308845c89f784da8a6780c1e77258488f1b6"},{"url":"https://git.kernel.org/stable/c/6dc76371a9a360c29de00df5b11563102d9d675a"},{"url":"https://git.kernel.org/stable/c/99dc05c75acc3c8cde8d89c5371f4b569de5ac62"},{"url":"https://git.kernel.org/stable/c/10a2b430f8f06ae14b9590b6f6faa6b588ef0654"}],"title":"wifi: mac80211_hwsim: clamp virtio RX length before skb_put","x_generator":{"engine":"bippy-1.2.0"}}}}