{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-31581", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.119Z", "datePublished": "2026-04-24T14:42:11.557Z", "dateUpdated": "2026-06-14T17:42:07.970Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-14T17:42:07.970Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: 6fire: fix use-after-free on disconnect\n\nIn usb6fire_chip_abort(), the chip struct is allocated as the card's\nprivate data (via snd_card_new with sizeof(struct sfire_chip)). When\nsnd_card_free_when_closed() is called and no file handles are open, the\ncard and embedded chip are freed synchronously. The subsequent\nchip->card = NULL write then hits freed slab memory.\n\nCall trace:\n usb6fire_chip_abort sound/usb/6fire/chip.c:59 [inline]\n usb6fire_chip_disconnect+0x348/0x358 sound/usb/6fire/chip.c:182\n usb_unbind_interface+0x1a8/0x88c drivers/usb/core/driver.c:458\n ...\n hub_event+0x1a04/0x4518 drivers/usb/core/hub.c:5953\n\nFix by moving the card lifecycle out of usb6fire_chip_abort() and into\nusb6fire_chip_disconnect(). The card pointer is saved in a local\nbefore any teardown, snd_card_disconnect() is called first to prevent\nnew opens, URBs are aborted while chip is still valid, and\nsnd_card_free_when_closed() is called last so chip is never accessed\nafter the card may be freed." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "sound/usb/6fire/chip.c" ], "versions": [ { "version": "f2d06d4e129e2508e356136f99bb20a332ff1a00", "lessThan": "e719232f4552e29de8027a83918ea94434be87af", "status": "affected", "versionType": "git" }, { "version": "b889a7d68d7e76b8795b754a75c91a2d561d5e8c", "lessThan": "e247a0e01d15ed420f77ec5e2335721bf430a5b3", "status": "affected", "versionType": "git" }, { "version": "ea8cc56db659cf0ae57073e32a4735ead7bd7ee3", "lessThan": "ba88461f7653636c48321ca993006a74724c2f41", "status": "affected", "versionType": "git" }, { "version": "b754e831a94f82f2593af806741392903f359168", "lessThan": "e88354b381e2006de63d6b052ed7005c9a47d00e", "status": "affected", "versionType": "git" }, { "version": "57860a80f03f9dc69a34a5c37b0941ad032a0a8c", "lessThan": "af75b486f7e883e3422ece23c8d727e6815144a0", "status": "affected", "versionType": "git" }, { "version": "a0810c3d6dd2d29a9b92604d682eacd2902ce947", "lessThan": "d21e8a2af4869b5890b34e081d5aeadc93e9cd5c", "status": "affected", "versionType": "git" }, { "version": "a0810c3d6dd2d29a9b92604d682eacd2902ce947", "lessThan": "3dc20d1981d6a67d8184498a5da272942dde1e65", "status": "affected", "versionType": "git" }, { "version": "a0810c3d6dd2d29a9b92604d682eacd2902ce947", "lessThan": "51f6532790b74ffdd6970bc848358a2838c1c185", "status": "affected", "versionType": "git" }, { "version": "a0810c3d6dd2d29a9b92604d682eacd2902ce947", "lessThan": "b9c826916fdce6419b94eb0cd8810fdac18c2386", "status": "affected", "versionType": "git" }, { "version": "74357d0b5cd3ef544752bc9f21cbeee4902fae6c", "status": "affected", "versionType": "git" }, { "version": "273eec23467dfbfbd0e4c10302579ba441fb1e13", "status": "affected", "versionType": "git" }, { "version": "0df7f4b5cc10f5adf98be0845372e9eef7bb5b09", "status": "affected", "versionType": "git" }, { "version": "5.10.231", "lessThan": "5.10.258", "status": "affected", "versionType": "semver" }, { "version": "5.15.174", "lessThan": "5.15.209", "status": "affected", "versionType": "semver" }, { "version": "6.1.120", "lessThan": "6.1.175", "status": "affected", "versionType": "semver" }, { "version": "6.6.64", "lessThan": "6.6.136", "status": "affected", "versionType": "semver" }, { "version": "6.12.2", "lessThan": "6.12.83", "status": "affected", "versionType": "semver" }, { "version": "4.19.325", "lessThan": "4.20", "status": "affected", "versionType": "semver" }, { "version": "5.4.287", "lessThan": "5.5", "status": "affected", "versionType": "semver" }, { "version": "6.11.11", "lessThan": "6.12", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "sound/usb/6fire/chip.c" ], "versions": [ { "version": "6.13", "status": "affected" }, { "version": "0", "lessThan": "6.13", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.136", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.83", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.24", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.14", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.1", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.231", "versionEndExcluding": "5.10.258" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.174", "versionEndExcluding": "5.15.209" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.120", "versionEndExcluding": "6.1.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.64", "versionEndExcluding": "6.6.136" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.2", "versionEndExcluding": "6.12.83" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.24" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.19.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.0.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.325" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.287" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11.11" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/e719232f4552e29de8027a83918ea94434be87af" }, { "url": "https://git.kernel.org/stable/c/e247a0e01d15ed420f77ec5e2335721bf430a5b3" }, { "url": "https://git.kernel.org/stable/c/ba88461f7653636c48321ca993006a74724c2f41" }, { "url": "https://git.kernel.org/stable/c/e88354b381e2006de63d6b052ed7005c9a47d00e" }, { "url": "https://git.kernel.org/stable/c/af75b486f7e883e3422ece23c8d727e6815144a0" }, { "url": "https://git.kernel.org/stable/c/d21e8a2af4869b5890b34e081d5aeadc93e9cd5c" }, { "url": "https://git.kernel.org/stable/c/3dc20d1981d6a67d8184498a5da272942dde1e65" }, { "url": "https://git.kernel.org/stable/c/51f6532790b74ffdd6970bc848358a2838c1c185" }, { "url": "https://git.kernel.org/stable/c/b9c826916fdce6419b94eb0cd8810fdac18c2386" } ], "title": "ALSA: 6fire: fix use-after-free on disconnect", "x_generator": { "engine": "bippy-1.2.0" } } } }