{"api_version":"1","generated_at":"2026-04-19T01:11:34+00:00","cve":"CVE-2026-23403","urls":{"html":"https://cve.report/CVE-2026-23403","api":"https://cve.report/api/cve/CVE-2026-23403.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23403","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23403"},"summary":{"title":"apparmor: fix memory leak in verify_header","description":"In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: fix memory leak in verify_header\n\nThe function sets `*ns = NULL` on every call, leaking the namespace\nstring allocated in previous iterations when multiple profiles are\nunpacked. 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23403","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dd51c84857630e77c139afe4d9bba65fc051dc3f 9d678eb0fe55c9195d9a253e8c5b82a87b930737 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dd51c84857630e77c139afe4d9bba65fc051dc3f 6b79abcb3c985e153fcf9d395e1d4336081aabc2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dd51c84857630e77c139afe4d9bba65fc051dc3f bcf82c0c5a8b383fd2d5d8f3fd880cdcab2ac557 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dd51c84857630e77c139afe4d9bba65fc051dc3f 663ce34786e759ebcbeb3060685c20bcc886d51a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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the Linux kernel, the following vulnerability has been resolved:\n\napparmor: fix memory leak in verify_header\n\nThe function sets `*ns = NULL` on every call, leaking the namespace\nstring allocated in previous iterations when multiple profiles are\nunpacked. This also breaks namespace consistency checking since *ns\nis always NULL when the comparison is made.\n\nRemove the incorrect assignment.\nThe caller (aa_unpack) initializes *ns to NULL once before the loop,\nwhich is sufficient."}],"providerMetadata":{"dateUpdated":"2026-04-18T08:58:36.504Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/9d678eb0fe55c9195d9a253e8c5b82a87b930737"},{"url":"https://git.kernel.org/stable/c/6b79abcb3c985e153fcf9d395e1d4336081aabc2"},{"url":"https://git.kernel.org/stable/c/bcf82c0c5a8b383fd2d5d8f3fd880cdcab2ac557"},{"url":"https://git.kernel.org/stable/c/663ce34786e759ebcbeb3060685c20bcc886d51a"},{"url":"https://git.kernel.org/stable/c/786e2c2a87d9c505f33321d1fd23a176aa8ddeb1"},{"url":"https://git.kernel.org/stable/c/4f0889f2df1ab99224a5e1ac4e20437eea5fe38e"},{"url":"https://git.kernel.org/stable/c/42fd831abfc15d0643c14688f0522556b347e7e6"},{"url":"https://git.kernel.org/stable/c/e38c55d9f834e5b848bfed0f5c586aaf45acb825"}],"title":"apparmor: fix memory leak in verify_header","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-23403","datePublished":"2026-04-01T08:36:34.269Z","dateReserved":"2026-01-13T15:37:46.012Z","dateUpdated":"2026-04-18T08:58:36.504Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-01 09:16:15","lastModifiedDate":"2026-04-18 09:16:24","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"23403","Ordinal":"1","Title":"apparmor: fix memory leak in verify_header","CVE":"CVE-2026-23403","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23403","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: fix memory leak in verify_header\n\nThe function sets `*ns = NULL` on every call, leaking the namespace\nstring allocated in previous iterations when multiple profiles are\nunpacked. This also breaks namespace consistency checking since *ns\nis always NULL when the comparison is made.\n\nRemove the incorrect assignment.\nThe caller (aa_unpack) initializes *ns to NULL once before the loop,\nwhich is sufficient.","Type":"Description","Title":"apparmor: fix memory leak in verify_header"}]}}}