CLSA-2026-1785917589
See a problem?- Import Source
- https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1785917589.json
- JSON Data
- https://api.osv.dev/v1/vulns/CLSA-2026-1785917589
- Upstream
CVE (7)
- Published
- 2026-08-05T08:13:26Z
- Modified
- 2026-10-26T09:43:45Z
- Summary
- tigervnc: Fix of 6 CVEs
- Details
-
- CVE-2026-50256: fix stack buffer overflow in font alias resolution in the bundled xorg-x11-server source by raising XLFDMAXFONTNAMELEN to libXfont2's MAXFONTNAMELEN and rejecting over-long resolved names
- CVE-2026-50257: fix use-after-free in miSyncDestroyFence() in the bundled xorg-x11-server source
- CVE-2026-50258: reject XKB key types whose numLevels exceeds XkbMaxShiftLevel in the bundled xorg-x11-server source to prevent a stack buffer overflow in XkbKeyTypesForCoreSymbols()
- CVE-2026-50259: clamp nMaps to the mapWidths[] buffer size in CheckKeyTypes() in the bundled xorg-x11-server source to prevent a stack buffer overflow from XkbSetMap requests
- CVE-2026-50260: fix use-after-free in FreeCounter() in the bundled xorg-x11-server source
- CVE-2026-50261: fix use-after-free in SyncChangeCounter() in the bundled xorg-x11-server source by restarting trigger list iteration after a trigger fires
- Dropped the local xorg-CVE-2026-33999/34000/34001/34002/34003 patches and require xorg-x11-server-source >= 1.20.4-99.el7_9.tuxcare.els10 instead; those fixes are now carried by the xorg-x11-server source package, and applying them again here failed %prep
- References
-
- https://errata.tuxcare.com/els_os/oraclelinux7els/CLSA-2026-1785917589.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-50256
- https://nvd.nist.gov/vuln/detail/CVE-2026-50257
- https://nvd.nist.gov/vuln/detail/CVE-2026-50258
- https://nvd.nist.gov/vuln/detail/CVE-2026-50259
- https://nvd.nist.gov/vuln/detail/CVE-2026-50260
- https://nvd.nist.gov/vuln/detail/CVE-2026-50261