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CVE-2026-23472

In the Linux kernel, the following vulnerability has been resolved: serial: core: fix infinite loop in handle_tx() for PORT_UNKNOWN uart_write_room() and uart_write() behave inconsistently when xmit_buf is NULL (which happens for PORT_UNKNOWN ports that were never properly initialized): - uart_write_room() returns kfifo_avail() which can be > 0 - uart_write() checks xmit_buf and returns 0 if NULL This inconsistency causes an infinite loop in drivers that rely on tty_write_room() to determine
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e1089b4e460720c55d63e96ee7fcdc2d79e968c4e2500ce79214aef5ab4d0f6b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/tty/serial/serial_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"efe85a557186b7fe915572ae93a8f3f78bfd9a22","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"bc70f2b36cf474d5cc8ecbcaf57f3e326fdec67c","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"455ce986fa356ff43a43c0d363ba95fa152f21d5","status":"affected","version":"1da177e4c3f41…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:96682961f00c449c43cd21d9a5d50a4c43a72bee03fff65be9eff8247935b629 · sha256:33a8ed6c559d26c2… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/tty/serial/serial_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_comm…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:96682961f00c449c43cd21d9a5d50a4c43a72bee03fff65be9eff8247935b629 · sha256:33a8ed6c559d26c2… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/tty/serial/serial_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"efe85a557186b7fe915572ae93a8f3f78bfd9a22","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"bc70f2b36cf474d5cc8ecbcaf57f3e326fdec67c","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"455ce986fa356ff43a43c0d363ba95fa152f21d5","status":"affected","version":"1da177e4c3f41…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:96682961f00c449c43cd21d9a5d50a4c43a72bee03fff65be9eff8247935b629 · sha256:33a8ed6c559d26c2… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/tty/serial/serial_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_comm…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:96682961f00c449c43cd21d9a5d50a4c43a72bee03fff65be9eff8247935b629 · sha256:33a8ed6c559d26c2… · /containers/cna/affected/1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/455ce986fa356ff43a43c0d363ba95fa152f21d5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:96682961f00c449c43cd21d9a5d50a4c43a72bee03fff65be9eff8247935b629 · sha256:33a8ed6c559d26c2… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/bc70f2b36cf474d5cc8ecbcaf57f3e326fdec67c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:96682961f00c449c43cd21d9a5d50a4c43a72bee03fff65be9eff8247935b629 · sha256:33a8ed6c559d26c2… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/efe85a557186b7fe915572ae93a8f3f78bfd9a22"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:96682961f00c449c43cd21d9a5d50a4c43a72bee03fff65be9eff8247935b629 · sha256:33a8ed6c559d26c2… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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