Answer in brief
CVE-2026-98742 records a Unknown severity vulnerability in ALSA: seq: Serialize compat port-info ioctls. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b3defb791b26ea0683a93a4f49c77ec45ec96f10 <413211dd31cb2ef2fc99fb0aa1a037a97509502c || >=b3defb791b26ea0683a93a4f49c77ec45ec96f10 <fc5c52848e405b6efb073db5035bb9ebaed11ec4 || >=b3defb791b26ea0683a93a4f49c77ec45ec96f10 <702d92f361f65d9698c473c7599d471395dc4341 || >=b3defb791b26ea0683a93a4f49c77ec45ec96f10 <95b2e0361c88753afa030c10698be0a1a5b67650 || d6693160906d55ba376bf0b88b7c129762170162 || 02cbce8576a31df8fca54aaec91ee081076bd79d || 6aab3aa52366a0051e5abf8aae4616c42053fd8e || f8a38ab4cd9624fc5ac8a7f965c7b20f5b62c03c || 623e5c8ae32b39cc8baea83478695dc624935318 || e4ff9f294629b65df3f7982cd4faf86b2856b9d7 || c3162384aed4cfe3f1a1f40041f3ba8cd7704d88 || >=3.2.99 <3.3 || >=3.16.54 <3.17 || >=3.18.94 <3.19 || >=4.1.50 <4.2 || >=4.4.115 <4.5 || >=4.9.78 <4.10 || >=4.14.15 <4.15 | 413211dd31cb2ef2fc99fb0aa1a037a97509502c, fc5c52848e405b6efb073db5035bb9ebaed11ec4, 702d92f361f65d9698c473c7599d471395dc4341, 95b2e0361c88753afa030c10698be0a1a5b67650, 3.3, 3.17, 3.19, 4.2, 4.5, 4.10, 4.15 |
| Linux/Linuxgeneric | 4.15 | Not reported |
| Linux/Linuxgeneric | >=b3defb791b26ea0683a93a4f49c77ec45ec96f10 <2db234e163f0d211b69a4eebbec8aacc5a54a80e || >=b3defb791b26ea0683a93a4f49c77ec45ec96f10 <413211dd31cb2ef2fc99fb0aa1a037a97509502c || >=b3defb791b26ea0683a93a4f49c77ec45ec96f10 <fc5c52848e405b6efb073db5035bb9ebaed11ec4 || >=b3defb791b26ea0683a93a4f49c77ec45ec96f10 <702d92f361f65d9698c473c7599d471395dc4341 || >=b3defb791b26ea0683a93a4f49c77ec45ec96f10 <95b2e0361c88753afa030c10698be0a1a5b67650 || d6693160906d55ba376bf0b88b7c129762170162 || 02cbce8576a31df8fca54aaec91ee081076bd79d || 6aab3aa52366a0051e5abf8aae4616c42053fd8e || f8a38ab4cd9624fc5ac8a7f965c7b20f5b62c03c || 623e5c8ae32b39cc8baea83478695dc624935318 || e4ff9f294629b65df3f7982cd4faf86b2856b9d7 || c3162384aed4cfe3f1a1f40041f3ba8cd7704d88 || >=3.2.99 <3.3 || >=3.16.54 <3.17 || >=3.18.94 <3.19 || >=4.1.50 <4.2 || >=4.4.115 <4.5 || >=4.9.78 <4.10 || >=4.14.15 <4.15 | 2db234e163f0d211b69a4eebbec8aacc5a54a80e, 413211dd31cb2ef2fc99fb0aa1a037a97509502c, fc5c52848e405b6efb073db5035bb9ebaed11ec4, 702d92f361f65d9698c473c7599d471395dc4341, 95b2e0361c88753afa030c10698be0a1a5b67650, 3.3, 3.17, 3.19, 4.2, 4.5, 4.10, 4.15 |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Serialize compat port-info ioctls The native sequencer ioctl path serializes handler calls with client->ioctl_mutex, but the translated port-info compat path invokes the same handlers through snd_seq_kernel_client_ctl() without taking that mutex. This lets concurrent compat CREATE_PORT requests pass the port-count check before any request reaches the serialized insertion. The computed integer port index can then exceed the address field range and wrap to an existing index. Subsequent subscriber teardown can resolve the duplicate address to the wrong port and access a freed subscriber. Take ioctl_mutex while dispatching converted port-info requests, matching the native ioctl path. All translated port-info commands share this helper, so their accesses to the client port state are serialized as well.
Quoted source text, attributed separately from HOL analysis.