CVE-2026-68411
Detail
Received This CVE record has recently been published to the CVE List and has been included within the NVD dataset.
Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211_hwsim: clamp virtio RX length before skb_put
hwsim_virtio_rx_work() passes the virtqueue used-ring length reported by
the device straight to skb_put() on a fixed-size receive skb. A backend
reporting a length larger than the skb tailroom drives skb_put() past the
buffer end and hits skb_over_panic() -- a host-triggerable guest panic
(denial of service).
Clamp the length to the skb's available room before skb_put(). A
conforming device never reports more than the posted buffer size, so valid
frames are unaffected; a truncated over-report then fails the
length/header checks in hwsim_virtio_handle_cmd() and is dropped, so
truncating rather than dropping here cannot be turned into a parsing
problem.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
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vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 2.0 Severity and Vector Strings:
NVD assessment
not yet provided.
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Change History
3 change records found show changes
CVE Modified by kernel.org
8/19/2026 1:20:48 PM
Action
Type
Old Value
New Value
Added
Reference
https://git.kernel.org/stable/c/5779e4a33e1666ddfeba43e96e29c4a9e5254ff0
Added
Reference
https://git.kernel.org/stable/c/7f9d678b870fca8eaf1d46fa915cba0b1d5b387a
Added
Reference
https://git.kernel.org/stable/c/909573d6a9b67354fc0515952574564e7c909c62
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"82c5a30a66e2a7337d99476c67d6fc1a99c4250e","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"fade308845c89f784da8a6780c1e77258488f1b6","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"6dc76371a9a360c29de00df5b11563102d9d675a","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"99dc05c75acc3c8cde8d89c5371f4b569de5ac62","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"10a2b430f8f06ae14b9590b6f6faa6b588ef0654","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
Record truncated, showing 2048 of 2511 characters.
View Entire Change Record [{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"7f9d678b870fca8eaf1d46fa915cba0b1d5b387a","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"909573d6a9b67354fc0515952574564e7c909c62","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"5779e4a33e1666ddfeba43e96e29c4a9e5254ff0","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"82c5a30a66e2a7337d99476c67d6fc1a99c4250e","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"fade308845c89f784da8a6780c1e77258488f1b6","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"6dc76371a9a360c29de00df5b11563102d9d675a","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"99dc05c75acc3c8cde8d89c5371f4b569de5ac62","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"10a2b430f8f06ae14b9590b6f6faa6b588ef0654","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","versionType":"semver","status":"unaffected"},{"version":"5.10.265","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.216","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.183","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.
CVE Modified by kernel.org
8/17/2026 2:17:50 AM
Action
Type
Old Value
New Value
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"82c5a30a66e2a7337d99476c67d6fc1a99c4250e","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"fade308845c89f784da8a6780c1e77258488f1b6","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"6dc76371a9a360c29de00df5b11563102d9d675a","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"99dc05c75acc3c8cde8d89c5371f4b569de5ac62","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"10a2b430f8f06ae14b9590b6f6faa6b588ef0654","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc4","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"82c5a30a66e2a7337d99476c67d6fc1a99c4250e","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"fade308845c89f784da8a6780c1e77258488f1b6","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"6dc76371a9a360c29de00df5b11563102d9d675a","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"99dc05c75acc3c8cde8d89c5371f4b569de5ac62","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"10a2b430f8f06ae14b9590b6f6faa6b588ef0654","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
New CVE Received from kernel.org
8/10/2026 9:20:34 AM
Action
Type
Old Value
New Value
Added
Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211_hwsim: clamp virtio RX length before skb_put
hwsim_virtio_rx_work() passes the virtqueue used-ring length reported by
the device straight to skb_put() on a fixed-size receive skb. A backend
reporting a length larger than the skb tailroom drives skb_put() past the
buffer end and hits skb_over_panic() -- a host-triggerable guest panic
(denial of service).
Clamp the length to the skb's available room before skb_put(). A
conforming device never reports more than the posted buffer size, so valid
frames are unaffected; a truncated over-report then fails the
length/header checks in hwsim_virtio_handle_cmd() and is dropped, so
truncating rather than dropping here cannot be turned into a parsing
problem.
Added
Reference
https://git.kernel.org/stable/c/10a2b430f8f06ae14b9590b6f6faa6b588ef0654
Added
Reference
https://git.kernel.org/stable/c/6dc76371a9a360c29de00df5b11563102d9d675a
Added
Reference
https://git.kernel.org/stable/c/82c5a30a66e2a7337d99476c67d6fc1a99c4250e
Added
Reference
https://git.kernel.org/stable/c/99dc05c75acc3c8cde8d89c5371f4b569de5ac62
Added
Reference
https://git.kernel.org/stable/c/fade308845c89f784da8a6780c1e77258488f1b6
Added
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"82c5a30a66e2a7337d99476c67d6fc1a99c4250e","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"fade308845c89f784da8a6780c1e77258488f1b6","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"6dc76371a9a360c29de00df5b11563102d9d675a","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"99dc05c75acc3c8cde8d89c5371f4b569de5ac62","versionType":"git","status":"affected"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"10a2b430f8f06ae14b9590b6f6faa6b588ef0654","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","versionType":"semver","status":"unaffected"},{"version":"6.6.148","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.101","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc4","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
Quick Info
CVE Dictionary Entry: CVE-2026-68411 NVD
Published Date: 08/10/2026 NVD
Last Modified: 08/19/2026
Source: kernel.org
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