{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31753", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.139Z", "datePublished": "2026-05-01T14:14:44.953Z", "dateUpdated": "2026-05-01T14:14:44.953Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-01T14:14:44.953Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nauxdisplay: line-display: fix NULL dereference in linedisp_release\n\nlinedisp_release() currently retrieves the enclosing struct linedisp via\nto_linedisp(). That lookup depends on the attachment list, but the\nattachment may already have been removed before put_device() invokes the\nrelease callback. This can happen in linedisp_unregister(), and can also\nbe reached from some linedisp_register() error paths.\n\nIn that case, to_linedisp() returns NULL and linedisp_release()\ndereferences it while freeing the display resources.\n\nThe struct device released here is the embedded linedisp->dev used by\nlinedisp_register(), so retrieve the enclosing object directly with\ncontainer_of() instead."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/auxdisplay/line-display.c"], "versions": [{"version": "66c93809487e62c4f59ef08625a3fbc0a7de6dd2", "lessThan": "625fdac41cfc4ca9e1774a0d31d7985aec2c1d66", "status": "affected", "versionType": "git"}, {"version": "66c93809487e62c4f59ef08625a3fbc0a7de6dd2", "lessThan": "7f138de156b20d9f9da6f72f90b63c01941d97d3", "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/auxdisplay/line-display.c"], "versions": [{"version": "6.19", "status": "affected"}, {"version": "0", "lessThan": "6.19", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.12", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "6.19", "versionEndExcluding": "6.19.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/625fdac41cfc4ca9e1774a0d31d7985aec2c1d66"}, {"url": "https://git.kernel.org/stable/c/7f138de156b20d9f9da6f72f90b63c01941d97d3"}], "title": "auxdisplay: line-display: fix NULL dereference in linedisp_release", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nauxdisplay: line-display: fix NULL dereference in linedisp_release\n\nlinedisp_release() currently retrieves the enclosing struct linedisp via\nto_linedisp(). That lookup depends on the attachment list, but the\nattachment may already have been removed before put_device() invokes the\nrelease callback. This can happen in linedisp_unregister(), and can also\nbe reached from some linedisp_register() error paths.\n\nIn that case, to_linedisp() returns NULL and linedisp_release()\ndereferences it while freeing the display resources.\n\nThe struct device released here is the embedded linedisp->dev used by\nlinedisp_register(), so retrieve the enclosing object directly with\ncontainer_of() instead."}], "id": "CVE-2026-31753", "lastModified": "2026-05-01T15:24:14.893", "metrics": {}, "published": "2026-05-01T15:16:38.223", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/625fdac41cfc4ca9e1774a0d31d7985aec2c1d66"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7f138de156b20d9f9da6f72f90b63c01941d97d3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: auxdisplay: line-display: fix NULL dereference in linedisp_release", "id": "2464353", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464353"}, "csaw": false, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel, specifically within the `auxdisplay` and `line-display` modules. This vulnerability occurs when the `linedisp_release()` function attempts to free display resources. If the associated attachment list has already been removed, the function dereferences a null pointer, which can lead to a system crash. This issue results in a Denial of Service (DoS), making the system unavailable."], "name": "CVE-2026-31753", "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"}], "public_date": "2026-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31753\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31753\nhttps://lore.kernel.org/linux-cve-announce/2026050143-CVE-2026-31753-cec6@gregkh/T"]}