Syed Abdul

Уязвимость драйвера iso9660 библиотеки libfsimage гипервизора Xen связана с чтением за пределами допустимого диапазона в памяти. Эксплуатация уязвимости может позволить нарушителю повысить свои привилегии

This update for xen fixes the following issues - CVE-2026-42493: x86 shadow paging is deprecated (bsc#1271528). - CVE-2026-42494,CVE-2026-42495,CVE-2026-62423,CVE-2026-62424,CVE-2026-62425: buffer overruns in libfsimage iso9660 handling (bsc#1271530). - CVE-2026-62426,CVE-2026-62427: sysctl and platform-op locks open to abuse (bsc#1271531). - CVE-2026-62428: grant-table: type confusion in grant-copy (bsc#1271532). - CVE-2026-62429: vNUMA domain cleanup may race other operations (bsc#1271534). - CVE-2026-62430: x86: Out-of-bounds read in vRTC emulation (bsc#1271535). - CVE-2026-62431: Viridian STIMER division by zero (bsc#1271536). - CVE-2026-62432: evtchn: Race between FIFO expand and reset (bsc#1271537). - CVE-2026-62433: correct buffer checks for DM OP hypercalls (bsc#1271538). - CVE-2026-62434: PoD: Don't try to reclaim special pages (bsc#1271539). - pygrub is only supported in de-privileged mode (XSA-508) (bsc#1271947).

🚨 CVE-2026-42494 [This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] The directory and Rock Ridge / SUSP walk in libfsimage's iso9660 driver derives several lengths directly from attacker-controlled on-disk fields without validating them: * The directory loop itself assumes a good record length. This is CVE-2026-42494. * The calculation of the System Use area may underflow. This is CVE-2026-42495. * The Rock Ridge extension loop assumes a good (inner) record length. This is CVE-2026-62423. * The Rock Ridge NM record processing assumes a good entry length. This is CVE-2026-62424. * The Rock Ridge CE record processing assumes a good size and offset. This is CVE-2026-62425. 🎖@cveNotify

🚨 CVE-2026-42494 [This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] The directory and Rock Ridge / SUSP walk in libfsimage's iso9660 driver derives several lengths directly from attacker-controlled on-disk fields without validating them: * The directory loop itself assumes a good record length. This is CVE-2026-42494. * The calculation of the System Use area may underflow. This is CVE-2026-42495. * The Rock Ridge extension loop assumes a good (inner) record length. This is CVE-2026-62423. * The Rock Ridge NM record processing assumes a good entry length. This is CVE-2026-62424. * The Rock Ridge CE record processing assumes a good size and offset. This is CVE-2026-62425. 🎖@cveNotify

Уязвимость драйвера iso9660 библиотеки libfsimage гипервизора Xen связана с целочисленным переполнением. Эксплуатация уязвимости может позволить нарушителю повысить свои привилегии