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 does not mean 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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