166 lines
8.4 KiB
JSON
166 lines
8.4 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-68296",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-12-16T14:48:05.293Z",
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"datePublished": "2025-12-16T15:06:15.797Z",
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"dateUpdated": "2026-06-19T11:57:24.114Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-06-19T11:57:24.114Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm, fbcon, vga_switcheroo: Avoid race condition in fbcon setup\n\nProtect vga_switcheroo_client_fb_set() with console lock. Avoids OOB\naccess in fbcon_remap_all(). Without holding the console lock the call\nraces with switching outputs.\n\nVGA switcheroo calls fbcon_remap_all() when switching clients. The fbcon\nfunction uses struct fb_info.node, which is set by register_framebuffer().\nAs the fb-helper code currently sets up VGA switcheroo before registering\nthe framebuffer, the value of node is -1 and therefore not a legal value.\nFor example, fbcon uses the value within set_con2fb_map() [1] as an index\ninto an array.\n\nMoving vga_switcheroo_client_fb_set() after register_framebuffer() can\nresult in VGA switching that does not switch fbcon correctly.\n\nTherefore move vga_switcheroo_client_fb_set() under fbcon_fb_registered(),\nwhich already holds the console lock. Fbdev calls fbcon_fb_registered()\nfrom within register_framebuffer(). Serializes the helper with VGA\nswitcheroo's call to fbcon_remap_all().\n\nAlthough vga_switcheroo_client_fb_set() takes an instance of struct fb_info\nas parameter, it really only needs the contained fbcon state. Moving the\ncall to fbcon initialization is therefore cleaner than before. Only amdgpu,\ni915, nouveau and radeon support vga_switcheroo. For all other drivers,\nthis change does nothing."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpu/drm/drm_fb_helper.c",
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"drivers/video/fbdev/core/fbcon.c"
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],
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"versions": [
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{
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"version": "6a9ee8af344e3bd7dbd61e67037096cdf7f83289",
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"lessThan": "711ebd961190def4c69ea24b2f0be75e995af24a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6a9ee8af344e3bd7dbd61e67037096cdf7f83289",
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"lessThan": "482330f8261b4bea8146d9bd69c1199e5dfcbb5c",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6a9ee8af344e3bd7dbd61e67037096cdf7f83289",
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"lessThan": "05814c389b53d2f3a0b9eeb90ba7a05ba77c4c2a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6a9ee8af344e3bd7dbd61e67037096cdf7f83289",
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"lessThan": "eb76d0f5553575599561010f24c277cc5b31d003",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpu/drm/drm_fb_helper.c",
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"drivers/video/fbdev/core/fbcon.c"
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],
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"versions": [
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{
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"version": "2.6.34",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.34",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.143",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.61",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.17.11",
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"lessThanOrEqual": "6.17.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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"versionEndExcluding": "6.6.143"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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"versionEndExcluding": "6.12.61"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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"versionEndExcluding": "6.17.11"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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"versionEndExcluding": "6.18"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/711ebd961190def4c69ea24b2f0be75e995af24a"
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},
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{
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"url": "https://git.kernel.org/stable/c/482330f8261b4bea8146d9bd69c1199e5dfcbb5c"
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},
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{
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"url": "https://git.kernel.org/stable/c/05814c389b53d2f3a0b9eeb90ba7a05ba77c4c2a"
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},
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{
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"url": "https://git.kernel.org/stable/c/eb76d0f5553575599561010f24c277cc5b31d003"
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}
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],
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"title": "drm, fbcon, vga_switcheroo: Avoid race condition in fbcon setup",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |