{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-03T09:47:31.648","vulnerabilities":[{"cve":{"id":"CVE-2023-53260","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-09-15T15:15:53.430","lastModified":"2026-01-14T18:16:38.670","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\novl: fix null pointer dereference in ovl_permission()\n\nFollowing process:\n          P1                     P2\n path_lookupat\n  link_path_walk\n   inode_permission\n    ovl_permission\n      ovl_i_path_real(inode, &realpath)\n        path->dentry = ovl_i_dentry_upper(inode)\n                          drop_cache\n\t\t\t   __dentry_kill(ovl_dentry)\n\t\t            iput(ovl_inode)\n\t\t             ovl_destroy_inode(ovl_inode)\n\t\t              dput(oi->__upperdentry)\n\t\t               dentry_kill(upperdentry)\n\t\t                dentry_unlink_inode\n\t\t\t\t upperdentry->d_inode = NULL\n      realinode = d_inode(realpath.dentry) // return NULL\n      inode_permission(realinode)\n       inode->i_sb  // NULL pointer dereference\n, will trigger an null pointer dereference at realinode:\n  [  335.664979] BUG: kernel NULL pointer dereference,\n                 address: 0000000000000002\n  [  335.668032] CPU: 0 PID: 2592 Comm: ls Not tainted 6.3.0\n  [  335.669956] RIP: 0010:inode_permission+0x33/0x2c0\n  [  335.678939] Call Trace:\n  [  335.679165]  <TASK>\n  [  335.679371]  ovl_permission+0xde/0x320\n  [  335.679723]  inode_permission+0x15e/0x2c0\n  [  335.680090]  link_path_walk+0x115/0x550\n  [  335.680771]  path_lookupat.isra.0+0xb2/0x200\n  [  335.681170]  filename_lookup+0xda/0x240\n  [  335.681922]  vfs_statx+0xa6/0x1f0\n  [  335.682233]  vfs_fstatat+0x7b/0xb0\n\nFetch a reproducer in [Link].\n\nUse the helper ovl_i_path_realinode() to get realinode and then do\nnon-nullptr checking."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-476"}]},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.1.43","matchCriteriaId":"F01F068D-4F17-428F-A051-299E2B650348"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.4.4","matchCriteriaId":"A91BC267-63EE-413E-A6EF-6B96C2A278D1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/1a73f5b8f079fd42a544c1600beface50c63af7c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/53dd2ca2c02fdcfe3aad2345091d371063f97d17","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/69f9ae7edf9ec0ff500429101923347fcba5c8c4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}