CVE-2026-68340
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:
hwmon: occ: validate poll response sensor blocks
The OCC poll response parser walks a counted list of sensor data blocks.
It used the static backing-array capacity as the parse boundary, but a
transport response makes only data_length bytes current and valid. A
truncated response can therefore make the parser consume a block header or
block extent outside the current response.
Use data_length as the parent boundary, prove the fixed poll header and
each current block header before reading them, and prove the complete block
before advancing. Keep parsed sensor metadata local until the complete
response has passed validation, then publish it. Propagate
malformed-response errors before publishing the OCC as active.
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:L/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 1:20:43 PM
Action
Type
Old Value
New Value
Added
Reference
https://git.kernel.org/stable/c/1902e9572901d37901e3db1f3f6b0885f4e49a66
Added
Reference
https://git.kernel.org/stable/c/6e6c72c37433640514db325408bd6913ad28fe69
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/hwmon/occ/common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"112525534ab5cff482d35897ca4ca11fd3a76f46","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"54cb78eceb4e286ccd5a5c01a4632157860d47f0","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"538d862cc0dbd5c732fe26d5aad98eae039e6676","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"b042e538e98b939fccfffc464e2c34c29f0e96ef","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"70e76e700fc6c46afb4e17aec099a1ea089b4a22","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/hwmon/occ/common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.0","status":"affected"},{"version":"0","lessThan":"5.0","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 2219 characters.
View Entire Change Record [{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/hwmon/occ/common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"6e6c72c37433640514db325408bd6913ad28fe69","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"1902e9572901d37901e3db1f3f6b0885f4e49a66","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"112525534ab5cff482d35897ca4ca11fd3a76f46","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"54cb78eceb4e286ccd5a5c01a4632157860d47f0","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"538d862cc0dbd5c732fe26d5aad98eae039e6676","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"b042e538e98b939fccfffc464e2c34c29f0e96ef","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"70e76e700fc6c46afb4e17aec099a1ea089b4a22","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/hwmon/occ/common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.0","status":"affected"},{"version":"0","lessThan":"5.0","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","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","less
CVE Modified by kernel.org
8/17/2026 2:17:42 AM
Action
Type
Old Value
New Value
Changed
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/hwmon/occ/common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"112525534ab5cff482d35897ca4ca11fd3a76f46","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"54cb78eceb4e286ccd5a5c01a4632157860d47f0","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"538d862cc0dbd5c732fe26d5aad98eae039e6676","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"b042e538e98b939fccfffc464e2c34c29f0e96ef","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"70e76e700fc6c46afb4e17aec099a1ea089b4a22","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/hwmon/occ/common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.0","status":"affected"},{"version":"0","lessThan":"5.0","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/hwmon/occ/common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"112525534ab5cff482d35897ca4ca11fd3a76f46","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"54cb78eceb4e286ccd5a5c01a4632157860d47f0","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"538d862cc0dbd5c732fe26d5aad98eae039e6676","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"b042e538e98b939fccfffc464e2c34c29f0e96ef","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"70e76e700fc6c46afb4e17aec099a1ea089b4a22","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/hwmon/occ/common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.0","status":"affected"},{"version":"0","lessThan":"5.0","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 7:17:31 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
New CVE Received from kernel.org
8/10/2026 9:20:24 AM
Action
Type
Old Value
New Value
Added
Description
In the Linux kernel, the following vulnerability has been resolved:
hwmon: occ: validate poll response sensor blocks
The OCC poll response parser walks a counted list of sensor data blocks.
It used the static backing-array capacity as the parse boundary, but a
transport response makes only data_length bytes current and valid. A
truncated response can therefore make the parser consume a block header or
block extent outside the current response.
Use data_length as the parent boundary, prove the fixed poll header and
each current block header before reading them, and prove the complete block
before advancing. Keep parsed sensor metadata local until the complete
response has passed validation, then publish it. Propagate
malformed-response errors before publishing the OCC as active.
Added
Reference
https://git.kernel.org/stable/c/112525534ab5cff482d35897ca4ca11fd3a76f46
Added
Reference
https://git.kernel.org/stable/c/538d862cc0dbd5c732fe26d5aad98eae039e6676
Added
Reference
https://git.kernel.org/stable/c/54cb78eceb4e286ccd5a5c01a4632157860d47f0
Added
Reference
https://git.kernel.org/stable/c/70e76e700fc6c46afb4e17aec099a1ea089b4a22
Added
Reference
https://git.kernel.org/stable/c/b042e538e98b939fccfffc464e2c34c29f0e96ef
Added
Affected
[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/hwmon/occ/common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"112525534ab5cff482d35897ca4ca11fd3a76f46","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"54cb78eceb4e286ccd5a5c01a4632157860d47f0","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"538d862cc0dbd5c732fe26d5aad98eae039e6676","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"b042e538e98b939fccfffc464e2c34c29f0e96ef","versionType":"git","status":"affected"},{"version":"aa195fe49b033db545ad986cdb2c431c37bea557","lessThan":"70e76e700fc6c46afb4e17aec099a1ea089b4a22","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/hwmon/occ/common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.0","status":"affected"},{"version":"0","lessThan":"5.0","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-2026-68340 NVD
Published Date: 08/10/2026 NVD
Last Modified: 08/19/2026
Source: kernel.org
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