CVE Explorer

CVE-2026-63883

In the Linux kernel, the following vulnerability has been resolved: serial: qcom_geni: fix kfifo underflow when flush precedes DMA completion IRQ When uart_flush_buffer() runs before the DMA completion IRQ is delivered, the following race can occur (all steps serialized by uart_port_lock): 1. DMA starts: tx_remaining = N, kfifo contains N bytes 2. DMA completes in hardware; IRQ is pending but not yet delivered 3. uart_flush_buffer() acquires the port lock and calls kfifo_reset(), m

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f286baf60845e6a7f09d9f9b42d44a99701eb0343e26db36727d5b985f900787

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/tty/serial/qcom_geni_serial.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.3"},{"lessThan":"6.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.35","versionType":"semver…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:742f591a86dc791554fe331143def440f8fce3df042f0d4fc2c703f18524d112 · sha256:e80778e16b0bfea5… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/tty/serial/qcom_geni_serial.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c91ea13375f70f6271a0183445e34e83b8f4d8f7","status":"affected","version":"2aaa43c7077833301c237684cd7bc9ae5e3dec95","versionType":"git"},{"lessThan":"b1159dce10b38eb795e4c96cdc4d34b83cec81c5","status":"affected","version":"2aaa43c7077833301c237684cd7bc9ae5e3dec95","versionType":"git"},{"lessThan":"654f45a8569f3cd6ff20bd724a18e0cce65893ba","status":"affected","version":"2aaa43c7…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:742f591a86dc791554fe331143def440f8fce3df042f0d4fc2c703f18524d112 · sha256:e80778e16b0bfea5… · /containers/cna/affected/0

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:742f591a86dc791554fe331143def440f8fce3df042f0d4fc2c703f18524d112 · sha256:e80778e16b0bfea5… · /containers/cna/affected/1

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:742f591a86dc791554fe331143def440f8fce3df042f0d4fc2c703f18524d112 · sha256:e80778e16b0bfea5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":7.3,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:742f591a86dc791554fe331143def440f8fce3df042f0d4fc2c703f18524d112 · sha256:e80778e16b0bfea5… · /containers/cna/metrics/0/cvssV3_1

Source references

5 source assertions

{"url":"https://git.kernel.org/stable/c/0d2c41a8b00934ddf8a7c1b4cf72dffa1e629c46"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:742f591a86dc791554fe331143def440f8fce3df042f0d4fc2c703f18524d112 · sha256:e80778e16b0bfea5… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/452d6fa37ae9b021f4f6d397dbae077f7296f6f4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:742f591a86dc791554fe331143def440f8fce3df042f0d4fc2c703f18524d112 · sha256:e80778e16b0bfea5… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/654f45a8569f3cd6ff20bd724a18e0cce65893ba"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:742f591a86dc791554fe331143def440f8fce3df042f0d4fc2c703f18524d112 · sha256:e80778e16b0bfea5… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/b1159dce10b38eb795e4c96cdc4d34b83cec81c5"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:742f591a86dc791554fe331143def440f8fce3df042f0d4fc2c703f18524d112 · sha256:e80778e16b0bfea5… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/c91ea13375f70f6271a0183445e34e83b8f4d8f7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:742f591a86dc791554fe331143def440f8fce3df042f0d4fc2c703f18524d112 · sha256:e80778e16b0bfea5… · /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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