CVE-2026-68373
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: at76c50x-usb: avoid length underflow in at76_guess_freq()
at76_guess_freq() checks only that the received frame is at least a bare
802.11 header (24 bytes) before subtracting the fixed management-body
offset:
len -= el_off;
For both beacon and probe response frames, el_off is 36. If the frame is
shorter than el_off, subtracting it causes the calculated IE length to
wrap. The length is eventually passed to cfg80211_find_elem_match() as a
very large unsigned value, so the element walk runs beyond the RX skb.
This path is reached from at76_rx_tasklet() while scanning. If the device
delivers a truncated beacon or probe response, the oversized IE length
causes an out-of-bounds read during scanning.
Skip the IE lookup if the frame does not reach the variable elements,
before subtracting el_off.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
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.
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 2.0 Severity and Vector Strings:
NVD assessment
not yet provided.
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Change History
4 change records found show changes
CVE Modified by kernel.org
8/19/2026 1:20:46 PM
Action
Type
Old Value
New Value
Added
Reference
https://git.kernel.org/stable/c/4875680d1703f56afa6257ba30244f2fb44ed205
Added
Reference
https://git.kernel.org/stable/c/b406f33d234f98c8b310fdab5cbb492d85e98e49
Added
Reference
https://git.kernel.org/stable/c/cb831aff2f850f72bc5ff5ad77d0a70bb5a84061
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"e165a1d295e7e814e13b0f92c86e5d48309509ce","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"bcde7249d45f52f994a9872bedf45994472ade77","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"fb1b50ab699211e777dca5ccfb648788b6a6e519","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"f742d9c98b5c504fc9e6744eef13a721c2aea486","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"61a799ffd1e5a4fd3702d547828b7ff3d161468e","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","lessThan":"2.6.30","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 2499 characters.
View Entire Change Record [{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"cb831aff2f850f72bc5ff5ad77d0a70bb5a84061","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"4875680d1703f56afa6257ba30244f2fb44ed205","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"b406f33d234f98c8b310fdab5cbb492d85e98e49","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"e165a1d295e7e814e13b0f92c86e5d48309509ce","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"bcde7249d45f52f994a9872bedf45994472ade77","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"fb1b50ab699211e777dca5ccfb648788b6a6e519","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"f742d9c98b5c504fc9e6744eef13a721c2aea486","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"61a799ffd1e5a4fd3702d547828b7ff3d161468e","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","lessThan":"2.6.30","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":"6.6.148","less
CVE Modified by kernel.org
8/17/2026 2:17:45 AM
Action
Type
Old Value
New Value
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"e165a1d295e7e814e13b0f92c86e5d48309509ce","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"bcde7249d45f52f994a9872bedf45994472ade77","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"fb1b50ab699211e777dca5ccfb648788b6a6e519","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"f742d9c98b5c504fc9e6744eef13a721c2aea486","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"61a799ffd1e5a4fd3702d547828b7ff3d161468e","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","lessThan":"2.6.30","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-rc5","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"e165a1d295e7e814e13b0f92c86e5d48309509ce","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"bcde7249d45f52f994a9872bedf45994472ade77","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"fb1b50ab699211e777dca5ccfb648788b6a6e519","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"f742d9c98b5c504fc9e6744eef13a721c2aea486","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"61a799ffd1e5a4fd3702d547828b7ff3d161468e","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","lessThan":"2.6.30","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"}]}]
CVE Modified by kernel.org
8/13/2026 7:17:32 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
New CVE Received from kernel.org
8/10/2026 9:20:30 AM
Action
Type
Old Value
New Value
Added
Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: at76c50x-usb: avoid length underflow in at76_guess_freq()
at76_guess_freq() checks only that the received frame is at least a bare
802.11 header (24 bytes) before subtracting the fixed management-body
offset:
len -= el_off;
For both beacon and probe response frames, el_off is 36. If the frame is
shorter than el_off, subtracting it causes the calculated IE length to
wrap. The length is eventually passed to cfg80211_find_elem_match() as a
very large unsigned value, so the element walk runs beyond the RX skb.
This path is reached from at76_rx_tasklet() while scanning. If the device
delivers a truncated beacon or probe response, the oversized IE length
causes an out-of-bounds read during scanning.
Skip the IE lookup if the frame does not reach the variable elements,
before subtracting el_off.
Added
Reference
https://git.kernel.org/stable/c/61a799ffd1e5a4fd3702d547828b7ff3d161468e
Added
Reference
https://git.kernel.org/stable/c/bcde7249d45f52f994a9872bedf45994472ade77
Added
Reference
https://git.kernel.org/stable/c/e165a1d295e7e814e13b0f92c86e5d48309509ce
Added
Reference
https://git.kernel.org/stable/c/f742d9c98b5c504fc9e6744eef13a721c2aea486
Added
Reference
https://git.kernel.org/stable/c/fb1b50ab699211e777dca5ccfb648788b6a6e519
Added
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"e165a1d295e7e814e13b0f92c86e5d48309509ce","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"bcde7249d45f52f994a9872bedf45994472ade77","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"fb1b50ab699211e777dca5ccfb648788b6a6e519","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"f742d9c98b5c504fc9e6744eef13a721c2aea486","versionType":"git","status":"affected"},{"version":"1264b951463a00efebe1bb596499aaad620ec8af","lessThan":"61a799ffd1e5a4fd3702d547828b7ff3d161468e","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","lessThan":"2.6.30","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-rc5","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]
Quick Info
CVE Dictionary Entry: CVE-2026-68373 NVD
Published Date: 08/10/2026 NVD
Last Modified: 08/19/2026
Source: kernel.org
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