{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-90316", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.801Z", "datePublished": "2026-09-17T16:08:34.875Z", "dateUpdated": "2026-10-19T09:01:32.683Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:01:32.683Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/omap: dsi: Do not copy isr table\n\nTo be able to unregister stuff from isrs, the corresponding table was\ncopied. Nobody seems to unregister stuff that way, so it does not help.\nBut there are stack-allocated objects passed to these isrs giving chances\nof UAF of these objects if irqs are unregistered while they are handled,\nso better do not copy that table." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The UAF is reached from local DRM_IOCTL_MODE_ATOMIC on /dev/dri/card*: dsi_bridge_disable()→dsi_disable()→dsi_sync_vc(), or a command-mode pageflip via omap_crtc_flush()→dsi_update_channel()→_dsi_send_nop()→dsi_vc_send_bta_sync(). Those register stack objects that omap_dsi_irq_handler() later fires from isr_tables_copy; no remote protocol carries this.\nAC:L - The attacker repeats those commits/pageflips so dsi_vc_send_bta_sync()/dsi_sync_vc_vp() register a stack completion then dsi_unregister_isr_vc() after wait_for_completion_timeout(), while DSI BTA/PACKET_SENT IRQs run omap_dsi_irq_handler() on another CPU against the copied table; both sides of the copy-vs-unregister race are attacker-driven.\nPR:L - DRM_IOCTL_MODE_ATOMIC is gated by DRM_MASTER in drm_ioctl_permit(), not CAP_SYS_ADMIN. drm_master_open() makes the first opener of an unclaimed omapdrm card the master, and a seat/video-group user on AM57x/OMAP DSI hardware typically holds that; this is ordinary local privilege, not init-namespace root.\nUI:N - The attacker opens /dev/dri/card* and submits their own atomic commits or dirty/page-flip ioctls that call dsi_vc_send_bta_sync() or dsi_sync_vc(); no other user must mount media, confirm a prompt, or attach a panel.\nS:U - dsi_call_isrs() running dsi_completion_handler()/dsi_packet_sent_handler_vp() corrupts kernel stack in the same kernel that hosts omapdrm; this is local kernel memory corruption, not a VM, IOMMU, or sandbox-boundary escape.\nC:H - dsi_call_isrs() invokes dsi_packet_sent_handler_vp/l4 with isr_data->arg still pointing at a returned dsi_packet_sent_handler_data / DECLARE_COMPLETION_ONSTACK frame; after reuse that object is read as a fake dsi pointer through dsi_read_reg()/REG_GET, which is a UAF read of kernel memory.\nI:H - The same dangling arg is passed to complete() in dsi_completion_handler and to complete(vp_data->completion) in the packet-sent handlers; a reused stack slot that overwrites the completion pointer lets complete() lock and wake a wait-queue at an attacker-influenced address, a kernel write/control-flow hijack.\nA:H - complete() on a freed stack completion, or dsi_read_reg() through a dangling dsi_data in dsi_packet_sent_handler_vp, oopses or panics the kernel even if the UAF is not turned into a full write primitive." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/omapdrm/dss/dsi.c", "drivers/gpu/drm/omapdrm/dss/dsi.h" ], "versions": [ { "version": "4ae2ddddf44cd9f73def2dbdb68c6859072262ff", "lessThan": "b3cbd1451c240446ce170f514244e1cb65ec0de4", "status": "affected", "versionType": "git" }, { "version": "4ae2ddddf44cd9f73def2dbdb68c6859072262ff", "lessThan": "f6733460b6d483dea7bfb5cfceb11cbff31a60b7", "status": "affected", "versionType": "git" }, { "version": "4ae2ddddf44cd9f73def2dbdb68c6859072262ff", "lessThan": "542a6a3ec77cd29f953987f7263f32fb8acb097e", "status": "affected", "versionType": "git" }, { "version": "4ae2ddddf44cd9f73def2dbdb68c6859072262ff", "lessThan": "2c27a84ba8d1bfed046d0067161d92001605accc", "status": "affected", "versionType": "git" }, { "version": "4ae2ddddf44cd9f73def2dbdb68c6859072262ff", "lessThan": "9063b30faae8ccaacf003735560df3956dbb592f", "status": "affected", "versionType": "git" }, { "version": "4ae2ddddf44cd9f73def2dbdb68c6859072262ff", "lessThan": "30810bdf273b4c93f8731b96a7204f33e052180d", "status": "affected", "versionType": "git" }, { "version": "4ae2ddddf44cd9f73def2dbdb68c6859072262ff", "lessThan": "97c03b32b28a9f7f13f768f2b06e1eaafe850e66", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/omapdrm/dss/dsi.c", "drivers/gpu/drm/omapdrm/dss/dsi.h" ], "versions": [ { "version": "2.6.39", "status": "affected" }, { "version": "0", "lessThan": "2.6.39", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "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": "2.6.39", "versionEndExcluding": "5.15.221" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.1.188" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.6.157" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.12.110" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "6.18.52" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "7.2.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.39", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/b3cbd1451c240446ce170f514244e1cb65ec0de4" }, { "url": "https://git.kernel.org/stable/c/f6733460b6d483dea7bfb5cfceb11cbff31a60b7" }, { "url": "https://git.kernel.org/stable/c/542a6a3ec77cd29f953987f7263f32fb8acb097e" }, { "url": "https://git.kernel.org/stable/c/2c27a84ba8d1bfed046d0067161d92001605accc" }, { "url": "https://git.kernel.org/stable/c/9063b30faae8ccaacf003735560df3956dbb592f" }, { "url": "https://git.kernel.org/stable/c/30810bdf273b4c93f8731b96a7204f33e052180d" }, { "url": "https://git.kernel.org/stable/c/97c03b32b28a9f7f13f768f2b06e1eaafe850e66" } ], "title": "drm/omap: dsi: Do not copy isr table", "x_generator": { "engine": "bippy-1.2.0" } } } }