CVE-2026-74381

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74381", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.890Z", "datePublished": "2026-08-15T05:58:58.354Z", "dateUpdated": "2026-08-17T05:18:19.071Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:18:19.071Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpu: host1x: Allow entries in BO caches to be freed\n\nWhen a buffer object is pinned via host1x_bo_pin() with a cache, the\nresulting mapping is kept in the cache so it can be reused on subsequent\npins. Each mapping held a reference to the underlying host1x_bo (taken\nin tegra_bo_pin / gather_bo_pin), so as long as a mapping was cached,\nthe bo itself could not be freed.\n\nHowever, the only way to remove the cached mapping was through the free\npath of the buffer object. This meant that if a bo got cached, it could\nnever get freed again.\n\nResolve the circularity by holding a weak reference to the bo from the\ncache side. This is done by having the .pin callbacks not bump the bo's\nrefcount -- instead the common Host1x bo code does so, except for the\ncache reference.\n\nAlso move the remove-cache-mapping-on-free code into a common function\ninside Host1x code. This is only called from the TegraDRM GEM buffers\nsince those are the only ones that can be cached at the moment."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/tegra/gem.c", "drivers/gpu/drm/tegra/submit.c", "drivers/gpu/host1x/bus.c", "include/linux/host1x.h"], "versions": [{"version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "lessThan": "af755456299d44e4ed6af3b7c70a7f03ea37fdf1", "status": "affected", "versionType": "git"}, {"version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "lessThan": "71c017b3f83ff72638f2a1b1d6d4e7bc61d30231", "status": "affected", "versionType": "git"}, {"version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "lessThan": "0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602", "status": "affected", "versionType": "git"}, {"version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "lessThan": "8c0d3cf0d5108c96317e0eca92b60dd368867cef", "status": "affected", "versionType": "git"}, {"version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "lessThan": "df63c76f9c8d881ca7bce1aecfba512328d0527d", "status": "affected", "versionType": "git"}, {"version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "lessThan": "3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc", "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/tegra/gem.c", "drivers/gpu/drm/tegra/submit.c", "drivers/gpu/host1x/bus.c", "include/linux/host1x.h"], "versions": [{"version": "5.17", "status": "affected"}, {"version": "0", "lessThan": "5.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "5.17", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/af755456299d44e4ed6af3b7c70a7f03ea37fdf1"}, {"url": "https://git.kernel.org/stable/c/71c017b3f83ff72638f2a1b1d6d4e7bc61d30231"}, {"url": "https://git.kernel.org/stable/c/0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602"}, {"url": "https://git.kernel.org/stable/c/8c0d3cf0d5108c96317e0eca92b60dd368867cef"}, {"url": "https://git.kernel.org/stable/c/df63c76f9c8d881ca7bce1aecfba512328d0527d"}, {"url": "https://git.kernel.org/stable/c/3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc"}], "title": "gpu: host1x: Allow entries in BO caches to be freed", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/tegra/gem.c", "drivers/gpu/drm/tegra/submit.c", "drivers/gpu/host1x/bus.c", "include/linux/host1x.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "af755456299d44e4ed6af3b7c70a7f03ea37fdf1", "status": "affected", "version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "versionType": "git"}, {"lessThan": "71c017b3f83ff72638f2a1b1d6d4e7bc61d30231", "status": "affected", "version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "versionType": "git"}, {"lessThan": "0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602", "status": "affected", "version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "versionType": "git"}, {"lessThan": "8c0d3cf0d5108c96317e0eca92b60dd368867cef", "status": "affected", "version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "versionType": "git"}, {"lessThan": "df63c76f9c8d881ca7bce1aecfba512328d0527d", "status": "affected", "version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "versionType": "git"}, {"lessThan": "3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc", "status": "affected", "version": "1f39b1dfa53c84b56d7ad37fed44afda7004959d", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/tegra/gem.c", "drivers/gpu/drm/tegra/submit.c", "drivers/gpu/host1x/bus.c", "include/linux/host1x.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.17"}, {"lessThan": "5.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\ngpu: host1x: Allow entries in BO caches to be freed\n\nWhen a buffer object is pinned via host1x_bo_pin() with a cache, the\nresulting mapping is kept in the cache so it can be reused on subsequent\npins. Each mapping held a reference to the underlying host1x_bo (taken\nin tegra_bo_pin / gather_bo_pin), so as long as a mapping was cached,\nthe bo itself could not be freed.\n\nHowever, the only way to remove the cached mapping was through the free\npath of the buffer object. This meant that if a bo got cached, it could\nnever get freed again.\n\nResolve the circularity by holding a weak reference to the bo from the\ncache side. This is done by having the .pin callbacks not bump the bo's\nrefcount -- instead the common Host1x bo code does so, except for the\ncache reference.\n\nAlso move the remove-cache-mapping-on-free code into a common function\ninside Host1x code. This is only called from the TegraDRM GEM buffers\nsince those are the only ones that can be cached at the moment."}], "id": "CVE-2026-74381", "lastModified": "2026-08-17T06:19:32.973", "metrics": {}, "published": "2026-08-15T06:22:39.927", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/71c017b3f83ff72638f2a1b1d6d4e7bc61d30231"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8c0d3cf0d5108c96317e0eca92b60dd368867cef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/af755456299d44e4ed6af3b7c70a7f03ea37fdf1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/df63c76f9c8d881ca7bce1aecfba512328d0527d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: gpu: host1x: Allow entries in BO caches to be freed", "id": "2516788", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516788"}, "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-911", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ngpu: host1x: Allow entries in BO caches to be freed\nWhen a buffer object is pinned via host1x_bo_pin() with a cache, the\nresulting mapping is kept in the cache so it can be reused on subsequent\npins. Each mapping held a reference to the underlying host1x_bo (taken\nin tegra_bo_pin / gather_bo_pin), so as long as a mapping was cached,\nthe bo itself could not be freed.\nHowever, the only way to remove the cached mapping was through the free\npath of the buffer object. This meant that if a bo got cached, it could\nnever get freed again.\nResolve the circularity by holding a weak reference to the bo from the\ncache side. This is done by having the .pin callbacks not bump the bo's\nrefcount -- instead the common Host1x bo code does so, except for the\ncache reference.\nAlso move the remove-cache-mapping-on-free code into a common function\ninside Host1x code. This is only called from the TegraDRM GEM buffers\nsince those are the only ones that can be cached at the moment.", "A flaw was found in the `gpu: host1x` component of the Linux kernel. When a buffer object is pinned with a cache, a circular reference prevents the buffer object from being freed. This issue can lead to a resource leak, potentially allowing a local attacker to cause a Denial of Service (DoS) by exhausting system memory."], "name": "CVE-2026-74381", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74381\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74381\nhttps://lore.kernel.org/linux-cve-announce/2026081505-CVE-2026-74381-dce5@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1f39b1dfa53c84b56d7ad37fed44afda7004959d,af755456299d44e4ed6af3b7c70a7f03ea37fdf1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1f39b1dfa53c84b56d7ad37fed44afda7004959d,71c017b3f83ff72638f2a1b1d6d4e7bc61d30231)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1f39b1dfa53c84b56d7ad37fed44afda7004959d,0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1f39b1dfa53c84b56d7ad37fed44afda7004959d,8c0d3cf0d5108c96317e0eca92b60dd368867cef)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1f39b1dfa53c84b56d7ad37fed44afda7004959d,df63c76f9c8d881ca7bce1aecfba512328d0527d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1f39b1dfa53c84b56d7ad37fed44afda7004959d,3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc)"}}], "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": "5.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"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": "2026-08-15T13:30:04.658203+00:00", "updated": "2026-08-22T01:30:17.267039+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}