High [CVE-2026-68458] cache secctx size before release zeroes it
This high-severity Red Hat Linux advisory covers CVE-2026-68458.
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Summary
A flaw was found in the Linux kernel's binder component. An error in calculating buffer boundaries during transaction processing causes a security context's length to be prematurely cleared, leading to an inflated buffer size.
This allows data to be written into an unintended memory region, which could result in memory corruption. A local attacker could potentially leverage this to gain unauthorized access to sensitive information or escalate privileges.
Red Hat severity: Moderate — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-120.
Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
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