CVE-2026-97604

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97604", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T16:01:01.158Z", "datePublished": "2026-09-25T10:22:16.613Z", "dateUpdated": "2026-10-19T09:10:08.190Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:10:08.190Z"}, "descriptions": [{"lang": "en", "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/video/fbdev/vfb.c"], "versions": [{"version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "lessThan": "bf49eac7ed11aabd0b9b790c062742a8e4be97c6", "status": "affected", "versionType": "git"}, {"version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "lessThan": "040ce3950f64a11e9ee5646c8aaa91fd2e29e245", "status": "affected", "versionType": "git"}, {"version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "lessThan": "ab664e279eb2a68e55895dd115a9488807280f07", "status": "affected", "versionType": "git"}, {"version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "lessThan": "de5a0eda59fe4b3eacd1a67c992e54766bb6683f", "status": "affected", "versionType": "git"}, {"version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "lessThan": "86356f13598f59f5acb1754895747dcdaf65a254", "status": "affected", "versionType": "git"}, {"version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "lessThan": "5ff1effb047e465cde193d7df95988aa1520035e", "status": "affected", "versionType": "git"}, {"version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "lessThan": "3c91e51a53cf805e551e5dc8149cd0539a6dbb9d", "status": "affected", "versionType": "git"}, {"version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "lessThan": "a0a34a40ed299c9c7cff6af163a5b883ee9d6d73", "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/video/fbdev/vfb.c"], "versions": [{"version": "2.6.30", "status": "affected"}, {"version": "0", "lessThan": "2.6.30", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "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": "2.6.30", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/bf49eac7ed11aabd0b9b790c062742a8e4be97c6"}, {"url": "https://git.kernel.org/stable/c/040ce3950f64a11e9ee5646c8aaa91fd2e29e245"}, {"url": "https://git.kernel.org/stable/c/ab664e279eb2a68e55895dd115a9488807280f07"}, {"url": "https://git.kernel.org/stable/c/de5a0eda59fe4b3eacd1a67c992e54766bb6683f"}, {"url": "https://git.kernel.org/stable/c/86356f13598f59f5acb1754895747dcdaf65a254"}, {"url": "https://git.kernel.org/stable/c/5ff1effb047e465cde193d7df95988aa1520035e"}, {"url": "https://git.kernel.org/stable/c/3c91e51a53cf805e551e5dc8149cd0539a6dbb9d"}, {"url": "https://git.kernel.org/stable/c/a0a34a40ed299c9c7cff6af163a5b883ee9d6d73"}], "title": "fbdev: vfb: defer cleanup until the last reference", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/video/fbdev/vfb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "bf49eac7ed11aabd0b9b790c062742a8e4be97c6", "status": "affected", "version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "versionType": "git"}, {"lessThan": "040ce3950f64a11e9ee5646c8aaa91fd2e29e245", "status": "affected", "version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "versionType": "git"}, {"lessThan": "ab664e279eb2a68e55895dd115a9488807280f07", "status": "affected", "version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "versionType": "git"}, {"lessThan": "de5a0eda59fe4b3eacd1a67c992e54766bb6683f", "status": "affected", "version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "versionType": "git"}, {"lessThan": "86356f13598f59f5acb1754895747dcdaf65a254", "status": "affected", "version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "versionType": "git"}, {"lessThan": "5ff1effb047e465cde193d7df95988aa1520035e", "status": "affected", "version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "versionType": "git"}, {"lessThan": "3c91e51a53cf805e551e5dc8149cd0539a6dbb9d", "status": "affected", "version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "versionType": "git"}, {"lessThan": "a0a34a40ed299c9c7cff6af163a5b883ee9d6d73", "status": "affected", "version": "5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/video/fbdev/vfb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.30"}, {"lessThan": "2.6.30", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "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."}], "id": "CVE-2026-97604", "lastModified": "2026-10-19T10:17:30.253", "metrics": {}, "published": "2026-09-25T11:17:14.407", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/040ce3950f64a11e9ee5646c8aaa91fd2e29e245"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3c91e51a53cf805e551e5dc8149cd0539a6dbb9d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5ff1effb047e465cde193d7df95988aa1520035e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/86356f13598f59f5acb1754895747dcdaf65a254"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a0a34a40ed299c9c7cff6af163a5b883ee9d6d73"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ab664e279eb2a68e55895dd115a9488807280f07"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bf49eac7ed11aabd0b9b790c062742a8e4be97c6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/de5a0eda59fe4b3eacd1a67c992e54766bb6683f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: fbdev: vfb: defer cleanup until the last reference", "id": "2541266", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541266"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nfbdev: vfb: defer cleanup until the last reference\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.\nKASAN reports:\nBUG: KASAN: slab-use-after-free in _copy_to_user\nRead of size 512 by task poc/125\n_copy_to_user (./include/linux/instrumented.h:129 ./include/linux/uaccess.h:201 lib/usercopy.c:24)\nfb_cmap_to_user (./include/linux/uaccess.h:230 drivers/video/fbdev/core/fbcmap.c:211)\ndo_fb_ioctl (drivers/video/fbdev/core/fb_chrdev.c:114)\nAllocated by task 1:\nfb_alloc_cmap_gfp (./include/linux/slab.h:973 ./include/linux/slab.h:1290 drivers/video/fbdev/core/fbcmap.c:108)\nvfb_probe (drivers/video/fbdev/vfb.c:459)\nFreed by task 124:\nfb_dealloc_cmap (drivers/video/fbdev/core/fbcmap.c:151)\nvfb_remove (drivers/video/fbdev/vfb.c:489)\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.", "A flaw was found in the Linux kernel's virtual framebuffer (vfb) driver. A local user can trigger a race condition by requesting colormap data while simultaneously unbinding the driver, causing memory to be freed while still being copied to user space. This use-after-free flaw can lead to a system crash, resulting in a Denial of Service (DoS), or potentially expose sensitive kernel memory."], "name": "CVE-2026-97604", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97604\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97604\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97604.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a,86356f13598f59f5acb1754895747dcdaf65a254)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a,5ff1effb047e465cde193d7df95988aa1520035e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a,3c91e51a53cf805e551e5dc8149cd0539a6dbb9d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5e266e2e0e19532c1b8e2e2bff1eb6ccf42e478a,a0a34a40ed299c9c7cff6af163a5b883ee9d6d73)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.30"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.30)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.111,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.53,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.7,7.2.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T19:00:13.679143+00:00", "updated": "2026-10-01T11:45:07.597966+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}