VDB
RHSA-2026:55618
RHSA-2026:55618
PUBLISHED
CVSS 7.800000190734863 HIGH
A flaw was found in the Linux kernel's rxrpc subsystem. An unprivileged local user could exploit an integer overflow vulnerability in the `rxrpc_preparse_xdr_yfs_rxgk()` function. This flaw occurs when processing specially crafted key and ticket lengths, causing an incorrect memory allocation size. Consequently, a heap buffer overflow can occur, potentially leading to arbitrary code execution or a denial of service.
Risk Scores
CVSS 3.1
7.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | kpatch-patch-6_12_0-211_16_1-debuginfo-0:1-6.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10) | * |
| Red Hat | kpatch-patch-6_12_0-211_16_1-0:1-6.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10) | * |
| Red Hat | kpatch-patch-6_12_0-211_16_1-debuginfo-0:1-6.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10) | * |
| Red Hat | kpatch-patch-6_12_0-211_16_1-debugsource-0:1-6.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10) | * |
| Red Hat | kpatch-patch-6_12_0-211_16_1-0:1-6.el10_2.src as a component of Red Hat Enterprise Linux BaseOS (v. 10) | * |
| Red Hat | kpatch-patch-6_12_0-211_16_1-0:1-6.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10) | * |
Timeline
- Aug 17, 2026 CVE Published
- Aug 24, 2026 CVE Updated
- Aug 24, 2026 Distribution Patch
- Aug 24, 2026 Distribution Patch
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:55618 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2461548 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2464397 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2468124 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2484451 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2504052 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_55618.json advisory
- https://access.redhat.com/security/cve/CVE-2026-31641 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-31641 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-31641 advisory
- https://lore.kernel.org/linux-cve-announce/2026042457-CVE-2026-31641-2dee@gregkh/T advisory
- https://access.redhat.com/security/cve/CVE-2026-43038 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-43038 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-43038 advisory
- https://lore.kernel.org/linux-cve-announce/2026050103-CVE-2026-43038-b591@gregkh/T advisory
- https://access.redhat.com/security/cve/CVE-2026-43329 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-43329 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-43329 advisory
- https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-43329.mbox advisory
…and 8 more