{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53401", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.403Z", "datePublished": "2026-07-19T12:02:01.209Z", "dateUpdated": "2026-07-20T13:40:03.562Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-20T13:40:03.562Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: omap2: fix use-after-free in omapfb_mmap\n\nomapfb_mmap() has a race condition with OMAPFB_SETUP_PLANE ioctl that\ncan lead to use-after-free:\n\nThe fb_mmap() entry point holds mm_lock but not lock (fb_info->lock),\nwhile ioctl handlers like OMAPFB_SETUP_PLANE hold lock but not mm_lock.\nThis allows concurrent execution.\n\nIn omapfb_mmap():\n1. rg = omapfb_get_mem_region(ofbi->region); // Get old region ref\n2. start = omapfb_get_region_paddr(ofbi); // Read from NEW region\n3. len = fix->smem_len; // Read from NEW region\n4. vm_iomap_memory(vma, start, len); // Map NEW region memory\n5. atomic_inc(&rg->map_count); // Increment OLD region!\n\nConcurrently, OMAPFB_SETUP_PLANE can:\n- Reassign ofbi->region = new_rg\n- Update fix->smem_len\n- OMAPFB_SETUP_MEM then checks NEW region's map_count (0!) and frees it\n\nThis leaves userspace with a mapping to freed physical memory.\n\nThe fix is to read all required values (start, len) from the same\nregion reference (rg) that will have its map_count incremented,\npreventing the region from being freed while still mapped."}], "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"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/video/fbdev/omap2/omapfb/omapfb-main.c"], "versions": [{"version": "078ff546a806b2c2ab74c25c8edd4c6d4680656a", "lessThan": "6eb6ebcc8590007ad59ddccc8b5f9201655b33f8", "status": "affected", "versionType": "git"}, {"version": "078ff546a806b2c2ab74c25c8edd4c6d4680656a", "lessThan": "7958e67375aa111522086286bba13cfc0816ce8d", "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/omap2/omapfb/omapfb-main.c"], "versions": [{"version": "2.6.36", "status": "affected"}, {"version": "0", "lessThan": "2.6.36", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.3", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "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": "2.6.36", "versionEndExcluding": "7.1.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6eb6ebcc8590007ad59ddccc8b5f9201655b33f8"}, {"url": "https://git.kernel.org/stable/c/7958e67375aa111522086286bba13cfc0816ce8d"}], "title": "fbdev: omap2: fix use-after-free in omapfb_mmap", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{"bugzilla": {"description": "kernel: fbdev: omap2: fix use-after-free in omapfb_mmap", "id": "2502253", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502253"}, "csaw": false, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nfbdev: omap2: fix use-after-free in omapfb_mmap\nomapfb_mmap() has a race condition with OMAPFB_SETUP_PLANE ioctl that\ncan lead to use-after-free:\nThe fb_mmap() entry point holds mm_lock but not lock (fb_info->lock),\nwhile ioctl handlers like OMAPFB_SETUP_PLANE hold lock but not mm_lock.\nThis allows concurrent execution.\nIn omapfb_mmap():\n1. rg = omapfb_get_mem_region(ofbi->region); // Get old region ref\n2. start = omapfb_get_region_paddr(ofbi); // Read from NEW region\n3. len = fix->smem_len; // Read from NEW region\n4. vm_iomap_memory(vma, start, len); // Map NEW region memory\n5. atomic_inc(&rg->map_count); // Increment OLD region!\nConcurrently, OMAPFB_SETUP_PLANE can:\n- Reassign ofbi->region = new_rg\n- Update fix->smem_len\n- OMAPFB_SETUP_MEM then checks NEW region's map_count (0!) and frees it\nThis leaves userspace with a mapping to freed physical memory.\nThe fix is to read all required values (start, len) from the same\nregion reference (rg) that will have its map_count incremented,\npreventing the region from being freed while still mapped.", "A flaw was found in the Linux kernel's omapfb display driver. A race condition in the omapfb_mmap() function, which manages memory mapping, allows for concurrent operations that can lead to a use-after-free vulnerability. This could enable a local attacker to access freed physical memory, potentially resulting in information disclosure, privilege escalation, or arbitrary code execution."], "name": "CVE-2026-53401", "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:hummingbird:1", "fix_state": "Not affected", "impact": "moderate", "package_name": "erlang27", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53401\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53401\nhttps://lore.kernel.org/linux-cve-announce/2026071958-CVE-2026-53401-69e2@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[078ff546a806b2c2ab74c25c8edd4c6d4680656a,6eb6ebcc8590007ad59ddccc8b5f9201655b33f8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[078ff546a806b2c2ab74c25c8edd4c6d4680656a,7958e67375aa111522086286bba13cfc0816ce8d)"}}], "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": "2.6.36"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.36)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.3,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "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": "2026-07-21T01:15:16.884144+00:00", "updated": "2026-07-21T01:15:16.884173+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}