248 lines
12 KiB
JSON
248 lines
12 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-2026-97604",
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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": "2026-09-24T16:01:01.158Z",
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"datePublished": "2026-09-25T10:22:16.613Z",
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"dateUpdated": "2026-10-19T09:10:08.190Z"
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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": "2026-10-19T09:10:08.190Z"
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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\nfbdev: vfb: defer cleanup until the last reference\n\nFBIOGETCMAP takes a shallow snapshot of info->cmap and performs the\nusercopy after dropping info->lock. vfb_remove() frees the colormap\nimmediately after unregistering the framebuffer, even when an open file\nstill holds a reference to fb_info. A concurrent driver unbind can\ntherefore free the colormap while the ioctl copies it to userspace.\n\nKASAN reports:\n\n BUG: KASAN: slab-use-after-free in _copy_to_user\n Read of size 512 by task poc/125\n\n _copy_to_user (./include/linux/instrumented.h:129 ./include/linux/uaccess.h:201 lib/usercopy.c:24)\n fb_cmap_to_user (./include/linux/uaccess.h:230 drivers/video/fbdev/core/fbcmap.c:211)\n do_fb_ioctl (drivers/video/fbdev/core/fb_chrdev.c:114)\n\n Allocated by task 1:\n fb_alloc_cmap_gfp (./include/linux/slab.h:973 ./include/linux/slab.h:1290 drivers/video/fbdev/core/fbcmap.c:108)\n vfb_probe (drivers/video/fbdev/vfb.c:459)\n\n Freed by task 124:\n fb_dealloc_cmap (drivers/video/fbdev/core/fbcmap.c:151)\n vfb_remove (drivers/video/fbdev/vfb.c:489)\n\nunregister_framebuffer() drops the registration reference, and fbdev calls\nfb_destroy after the last put_fb_info(). Move the registered framebuffer's\ncleanup into an fb_destroy callback so its colormap and screen buffer stay\nalive until all file references have been released."
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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/video/fbdev/vfb.c"
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],
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"versions": [
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{
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"version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a",
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"lessThan": "bf49eac7ed11aabd0b9b790c062742a8e4be97c6",
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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": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a",
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"lessThan": "040ce3950f64a11e9ee5646c8aaa91fd2e29e245",
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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": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a",
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"lessThan": "ab664e279eb2a68e55895dd115a9488807280f07",
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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": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a",
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"lessThan": "de5a0eda59fe4b3eacd1a67c992e54766bb6683f",
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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": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a",
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"lessThan": "86356f13598f59f5acb1754895747dcdaf65a254",
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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": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a",
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"lessThan": "5ff1effb047e465cde193d7df95988aa1520035e",
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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": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a",
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"lessThan": "3c91e51a53cf805e551e5dc8149cd0539a6dbb9d",
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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": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a",
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"lessThan": "a0a34a40ed299c9c7cff6af163a5b883ee9d6d73",
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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/video/fbdev/vfb.c"
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],
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"versions": [
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{
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"version": "2.6.30",
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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": "2.6.30",
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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": "5.10.271",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.222",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.189",
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"lessThanOrEqual": "6.1.*",
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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": "6.6.158",
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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": "6.12.111",
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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": "6.18.53",
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"lessThanOrEqual": "6.18.*",
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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": "7.2.7",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "2.6.30",
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"versionEndExcluding": "5.10.271"
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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": "2.6.30",
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"versionEndExcluding": "5.15.222"
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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": "2.6.30",
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"versionEndExcluding": "6.1.189"
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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": "2.6.30",
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"versionEndExcluding": "6.6.158"
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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": "2.6.30",
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"versionEndExcluding": "6.12.111"
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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": "2.6.30",
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"versionEndExcluding": "6.18.53"
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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": "2.6.30",
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"versionEndExcluding": "7.2.7"
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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": "2.6.30",
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"versionEndExcluding": "7.3"
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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/bf49eac7ed11aabd0b9b790c062742a8e4be97c6"
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},
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{
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"url": "https://git.kernel.org/stable/c/040ce3950f64a11e9ee5646c8aaa91fd2e29e245"
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},
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{
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"url": "https://git.kernel.org/stable/c/ab664e279eb2a68e55895dd115a9488807280f07"
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},
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{
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"url": "https://git.kernel.org/stable/c/de5a0eda59fe4b3eacd1a67c992e54766bb6683f"
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},
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{
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"url": "https://git.kernel.org/stable/c/86356f13598f59f5acb1754895747dcdaf65a254"
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},
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{
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"url": "https://git.kernel.org/stable/c/5ff1effb047e465cde193d7df95988aa1520035e"
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},
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{
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"url": "https://git.kernel.org/stable/c/3c91e51a53cf805e551e5dc8149cd0539a6dbb9d"
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},
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{
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"url": "https://git.kernel.org/stable/c/a0a34a40ed299c9c7cff6af163a5b883ee9d6d73"
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}
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],
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"title": "fbdev: vfb: defer cleanup until the last reference",
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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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} |