{"id":"CVE-2026-35233","aliases":["DEBIAN-CVE-2026-35233","EUVD-2026-26702","GHSA-cjc5-j2ff-wq2w","UBUNTU-CVE-2026-35233"],"status":"published","title":"An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an...","description":"An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an out-of-range sh_link field. When root-level dtrace attaches to -- or instruments -- that process (via dtrace -p , pid probes, or USDT), the ELF parser reads heap memory beyond the allocated section cache array without any bounds check. This results in an uninitialized/out-of-bounds heap read that can cause a NULL pointer dereference crash of the dtrace process (DoS), or -- depending on heap layout -- a read-then-use of a garbage pointer controlled by adjacent allocations, providing a foothold toward further exploitation in a privileged context.","severity":{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00108,"percentile":0.01197,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2026-05-01T17:53:17Z","modified":"2026-10-27T09:47:38Z","fixes":[{"ecosystem":"Debian:14","package":"dtrace","fixed_in":["2.0.7-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:14","package":"dtrace","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.7-1"}]}],"versions":["2.0.5-1","2.0.6-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"dtrace","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.6-1","2.0.7-1","2.0.7-2","2.0.7-3"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"dtrace","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.5-1","2.0.6-1"]}],"products":[{"vendor":"oracle","product":"linux"},{"vendor":"oracle corporation","product":"oracle linux"}],"references":[{"url":"https://linux.oracle.com/cve/CVE-2026-35233.html","tags":["vendor-advisory","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35233"},{"url":"https://github.com/advisories/GHSA-cjc5-j2ff-wq2w"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-35233","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-35233","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-35233","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-35233","description":"An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an out-of-range sh_link field. When root-level dtrace attaches to -- or instruments -- that process (via dtrace -p , pid probes, or USDT), the ELF parser reads heap memory beyond the allocated section cache array without any bounds check. This results in an uninitialized/out-of-bounds heap read that can cause a NULL pointer dereference crash of the dtrace process (DoS), or -- depending on heap layout -- a read-then-use of a garbage pointer controlled by adjacent allocations, providing a foothold toward further exploitation in a privileged context.","status":"published","published":"2026-05-01T17:53:17.209Z","modified":"2026-05-01T18:16:32.848Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:20:05.505362Z"}],"euvd":[{"id":"EUVD-2026-26702","description":"An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an out-of-range sh_link field. When root-level dtrace attaches to -- or instruments -- that process (via dtrace -p , pid probes, or USDT), the ELF parser reads heap memory beyond the allocated section cache array without any bounds check. This results in an uninitialized/out-of-bounds heap read that can cause a NULL pointer dereference crash of the dtrace process (DoS), or -- depending on heap layout -- a read-then-use of a garbage pointer controlled by adjacent allocations, providing a foothold toward further exploitation in a privileged context.","status":"published","published":"2026-05-01T17:53:17Z","modified":"2026-05-01T18:16:32Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T19:05:18.340967Z"}],"ghsa":[{"id":"GHSA-cjc5-j2ff-wq2w","title":"An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an...","description":"An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an out-of-range sh_link field. When root-level dtrace attaches to -- or instruments -- that process (via dtrace -p , pid probes, or USDT), the ELF parser reads heap memory beyond the allocated section cache array without any bounds check. This results in an uninitialized/out-of-bounds heap read that can cause a NULL pointer dereference crash of the dtrace process (DoS), or -- depending on heap layout -- a read-then-use of a garbage pointer controlled by adjacent allocations, providing a foothold toward further exploitation in a privileged context.","status":"published","published":"2026-05-01T18:31:25Z","modified":"2026-05-01T21:31:21Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:07:52.84276Z"}],"nvd":[{"id":"CVE-2026-35233","description":"An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an out-of-range sh_link field. When root-level dtrace attaches to -- or instruments -- that process (via dtrace -p , pid probes, or USDT), the ELF parser reads heap memory beyond the allocated section cache array without any bounds check. This results in an uninitialized/out-of-bounds heap read that can cause a NULL pointer dereference crash of the dtrace process (DoS), or -- depending on heap layout -- a read-then-use of a garbage pointer controlled by adjacent allocations, providing a foothold toward further exploitation in a privileged context.","status":"published","published":"2026-05-01T18:16:14.647Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:17.022502Z"}],"osv":[{"id":"DEBIAN-CVE-2026-35233","description":"An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an out-of-range sh_link field. When root-level dtrace attaches to -- or instruments -- that process (via dtrace -p , pid probes, or USDT), the ELF parser reads heap memory beyond the allocated section cache array without any bounds check. This results in an uninitialized/out-of-bounds heap read that can cause a NULL pointer dereference crash of the dtrace process (DoS), or -- depending on heap layout -- a read-then-use of a garbage pointer controlled by adjacent allocations, providing a foothold toward further exploitation in a privileged context.","status":"published","published":"2026-05-01T18:16:14.647Z","modified":"2026-10-27T09:47:38.188039992Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:45:54.587575Z"},{"id":"UBUNTU-CVE-2026-35233","description":"An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an out-of-range sh_link field. When root-level dtrace attaches to -- or instruments -- that process (via dtrace -p , pid probes, or USDT), the ELF parser reads heap memory beyond the allocated section cache array without any bounds check. This results in an uninitialized/out-of-bounds heap read that can cause a NULL pointer dereference crash of the dtrace process (DoS), or -- depending on heap layout -- a read-then-use of a garbage pointer controlled by adjacent allocations, providing a foothold toward further exploitation in a privileged context.","status":"published","published":"2026-05-01T18:16:00Z","modified":"2026-10-17T12:58:12.662167978Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T16:56:16.686388Z"}]}}