CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2 library's maximum font name length can cause a stack buffer overflow during font alias resolution. The server allocates a 256 byte stack buffer but libXfont2's alias target name length is 1024 bytes. A font alias name between 257 and 1023 bytes causes the X server to copy that name into the undersized stack buffer without further checks. This may be used to crash the server, or for privilege escalation if the X server runs as root.
Засегнати продукти
- Red Hat Red Hat Enterprise Linux 10: от 0:24.1.9-4.el10_2.2 нататък
- Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support: от 0:24.1.5-6.el10_0.1 нататък
- Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION: от 0:1.1.0-25.el6_10.18 нататък
- Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support: от 0:1.20.4-35.el7_9 нататък
- Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support: от 0:1.8.0-36.el7_9.5 нататък
- Red Hat Red Hat Enterprise Linux 8: от 0:21.1.3-20.el8_10.2 нататък
- Red Hat Red Hat Enterprise Linux 8: от 0:1.20.11-28.el8_10.2 нататък
- Red Hat Red Hat Enterprise Linux 8: от 0:1.15.0-10.el8_10 нататък
- Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support: от 0:1.20.10-5.el8_4 нататък
- Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support: от 0:1.11.0-8.el8_4.16 нататък
- Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On: от 0:1.20.10-5.el8_4 нататък
- Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On: от 0:1.11.0-8.el8_4.16 нататък
- Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: от 0:1.20.11-8.el8_6 нататък
- Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: от 0:21.1.3-2.el8_6.7 нататък
- Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: от 0:1.12.0-6.el8_6.18 нататък
- Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On: от 0:1.20.11-8.el8_6 нататък
- Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On: от 0:21.1.3-2.el8_6.7 нататък
- Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On: от 0:1.12.0-6.el8_6.18 нататък
- Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service: от 0:1.20.11-19.el8_8 нататък
- Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service: от 0:21.1.3-13.el8_8.1 нататък
- Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service: от 0:1.12.0-15.el8_8.18 нататък
- Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions: от 0:1.20.11-19.el8_8 нататък
- Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions: от 0:21.1.3-13.el8_8.1 нататък
- Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions: от 0:1.12.0-15.el8_8.18 нататък
- Red Hat Red Hat Enterprise Linux 9: от 0:24.1.9-4.el9_8.2 нататък
- Red Hat Red Hat Enterprise Linux 9: от 0:1.20.11-34.el9_8.2 нататък
- Red Hat Red Hat Enterprise Linux 9: от 0:1.15.0-7.el9_8.2 нататък
- Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions: от 0:1.20.11-21.el9_2 нататък
- Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions: от 0:21.1.3-10.el9_2.1 нататък
- Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions: от 0:1.12.0-14.el9_2.15 нататък
- Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions: от 0:1.20.11-29.el9_4 нататък
- Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions: от 0:22.1.9-8.el9_4.1 нататък
- Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions: от 0:1.13.1-8.el9_4.10 нататък
- Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support: от 0:1.20.11-34.el9_6 нататък
- Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support: от 0:23.2.7-6.el9_6.1 нататък
- Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support: от 0:1.14.1-11.el9_6 нататък
- Red Hat Red Hat Enterprise Linux 6
Вид слабост
История
- 5 юни 2026 Публикувано
Други уязвимости в Red Hat Red Hat Enterprise Linux 10
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-50256
- https://nvd.nist.gov/vuln/detail/CVE-2026-50256
- https://access.redhat.com/errata/RHSA-2026:26562
- https://access.redhat.com/errata/RHSA-2026:26566
- https://access.redhat.com/errata/RHSA-2026:26590
- https://access.redhat.com/errata/RHSA-2026:26610
- https://access.redhat.com/errata/RHSA-2026:26709
- https://access.redhat.com/errata/RHSA-2026:28923
- https://access.redhat.com/errata/RHSA-2026:29844
- https://access.redhat.com/errata/RHSA-2026:36083
- https://access.redhat.com/errata/RHSA-2026:36085
- https://access.redhat.com/errata/RHSA-2026:36086
- https://access.redhat.com/errata/RHSA-2026:36087
- https://access.redhat.com/errata/RHSA-2026:36632
- https://access.redhat.com/errata/RHSA-2026:36633
- https://access.redhat.com/errata/RHSA-2026:36634
- https://access.redhat.com/errata/RHSA-2026:36768
- https://access.redhat.com/errata/RHSA-2026:36791
- https://access.redhat.com/errata/RHSA-2026:36792
- https://access.redhat.com/errata/RHSA-2026:36798
- https://access.redhat.com/errata/RHSA-2026:38502
- https://access.redhat.com/errata/RHSA-2026:38810
- https://access.redhat.com/errata/RHSA-2026:46377
- https://access.redhat.com/errata/RHSA-2026:46382
- https://access.redhat.com/errata/RHSA-2026:46385
- https://access.redhat.com/errata/RHSA-2026:46392
- https://access.redhat.com/errata/RHSA-2026:46456
- https://access.redhat.com/errata/RHSA-2026:46460
- https://access.redhat.com/errata/RHSA-2026:46473
- https://access.redhat.com/errata/RHSA-2026:49519
- https://access.redhat.com/security/cve/CVE-2026-50256
- https://bugzilla.redhat.com/show_bug.cgi?id=2485380
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/bb5158f962dc935e58ef8b4b5fcb31be201a6e07
- https://lists.x.org/archives/xorg-announce/2026-June/003702.html
- https://redhat.atlassian.net/browse/PSIRTSUPT-16950
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50256.json