Bug 2252731 (CVE-2023-6931)
| Summary: | CVE-2023-6931 kernel: Out of boundary write in perf_read_group() as result of overflow a perf_event's read_size | ||
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| Product: | [Other] Security Response | Reporter: | Alex <allarkin> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | acaringi, allarkin, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jforbes, jlelli, joe.lawrence, jpoimboe, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, michal.skrivanek, mmilgram, mperina, mstowell, nmurray, ptalbert, rgatica, rkeshri, rogbas, rparrazo, rrobaina, rvrbovsk, rysulliv, sbonazzo, scweaver, security-response-team, tglozar, tyberry, vkumar, wcosta, williams, wmealing, xiaoyali, ycote, ykopkova, zhijwang |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
A flaw was found in the Linux kernel's Performance Events system component. A condition can be triggered that allows data to be written past the end or before the beginning of the intended memory buffer. This may lead to a system crash, code execution, or local privilege escalation.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2256503 | ||
| Bug Blocks: | 2252725, 2255284 | ||
*** Bug 2255286 has been marked as a duplicate of this bug. *** This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Extended Update Support Via RHSA-2024:0930 https://access.redhat.com/errata/RHSA-2024:0930 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Extended Update Support Via RHSA-2024:1019 https://access.redhat.com/errata/RHSA-2024:1019 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Extended Update Support Via RHSA-2024:1018 https://access.redhat.com/errata/RHSA-2024:1018 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Extended Update Support Via RHSA-2024:1404 https://access.redhat.com/errata/RHSA-2024:1404 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2024:1607 https://access.redhat.com/errata/RHSA-2024:1607 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2024:1614 https://access.redhat.com/errata/RHSA-2024:1614 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Extended Update Support Via RHSA-2024:1840 https://access.redhat.com/errata/RHSA-2024:1840 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Extended Update Support Via RHSA-2024:1836 https://access.redhat.com/errata/RHSA-2024:1836 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2024:2394 https://access.redhat.com/errata/RHSA-2024:2394 |
A flaw was found in the Linux kernel. It is possible to overflow a perf_event's read_size, causing an out-of-bounds write in perf_read_group(). The check meant to prevent such an overflow in perf_event_validate_size() does not account for groups of events with mixed read_format values. The flaw can be triggered with events created with PERF_FORMAT_GROUP or events added with PERF_FORMAT_GROUP after some preconditions. The bug was introduced around fa8c269353d5 ("perf/core: Invert perf_read_group() loops"). Fixes: a723968c0ed3 ("perf: Fix u16 overflows"). Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1b