Medium [CVE-2026-63877] Convert to use a platform device
This medium-severity Red Hat Linux advisory covers CVE-2026-63877.
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Summary
In the Linux kernel, the following vulnerability has been resolved: serial: dz: Convert to use a platform device Prevent a crash from happening as the first serial port is initialised: Console: switching to colour frame buffer device 160x64 tgafb: SFB+ detected, rev=0x02 fb0: Digital ZLX-E1 frame buffer device at 0x1e000000 DECstation DZ serial driver version 1.04 CPU 0 Unable to handle kernel paging request at virtual address 000000bc, epc == 8048b3a4, ra == 80470a78 Oops[#1]: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.19.0-dirty #35 NONE $ 0: 00000000 1000ac00 00000004 804707ac $ 4: 00000000 80e20850 80e20858 81000030 $ 8: 00000000 8072c81c 00000008 fefefeff $12: 6c616972 00000006 80c5917f 69726420 $16: 80e20800 00000000 808f8968 80e20800 $20: 00000000 807f5a90 808b0094 808d3bc8 $24: 00000018 80479030 $28: 80c2e000 80c2fd70 00000069 80470a78 Hi: 00000004 Lo: 00000000 epc: 8048b3a4 __dev_fwnode+0x0/0xc ra: 80470a78 serial_base_ctrl_add+0xa0/0x168 Status: 1000ac04IEp Cause: 30000008 (ExcCode 02) BadVA: 000000bc PrId: 00000220 (R3000) Modules linked in: Process swapper/0 (pid: 1, threadinfo=(ptrval), task=(ptrval), tls=00000000) Stack: 00400044 00400040 8046f4cc 00000000 808a6148 808a0000 808f8968 8086983c 808e0000 8046fc84 1000ac01 00000028 80e20700 802ba3f8 80e20700 80d34a94 80c1b900 80e20700 80e20700 80e20700 80e20700 80444650 00000000 00000000 00000000 807f5a90…
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 7 days 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 7 days 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 7 days ago·verify at source
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