{"id":"CVE-2023-52606","title":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/lib: Validate size for vector operations\n\nSome of the fp/vmx code in sstep.c assume a certain maximum size for the\ninstructions being emulated","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/lib: Validate size for vector operations\n\nSome of the fp/vmx code in sstep.c assume a certain maximum size for the\ninstructions being emulated. The size of thos…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-770"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel < 4.19.307","linux_kernel >= 4.20, < 5.4.269","linux_kernel >= 5.5, < 5.10.210","linux_kernel >= 5.11, < 5.15.149","linux_kernel >= 5.16, < 6.1.77","linux_kernel >= 6.2, < 6.6.16","linux_kernel >= 6.7, < 6.7.4"],"patched":["linux_kernel 6.7.4"],"published":"2024-03-06","updated":"2026-08-04","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-52606","references":[{"url":"https://git.kernel.org/stable/c/0580f4403ad33f379eef865c2a6fe94de37febdf","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/28b8ba8eebf26f66d9f2df4ba550b6b3b136082c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/42084a428a139f1a429f597d44621e3a18f3e414","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/848e1d7fd710900397e1d0e7584680c1c04e3afd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8f9abaa6d7de0a70fc68acaedce290c1f96e2e59","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/abd26515d4b767ba48241eea77b28ce0872aef3e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/beee482cc4c9a6b1dcffb2e190b4fd8782258678","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/de4f5ed63b8a199704d8cdcbf810309d7eb4b36b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/0580f4403ad33f379eef865c2a6fe94de37febdf","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/28b8ba8eebf26f66d9f2df4ba550b6b3b136082c","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/42084a428a139f1a429f597d44621e3a18f3e414","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/848e1d7fd710900397e1d0e7584680c1c04e3afd","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/8f9abaa6d7de0a70fc68acaedce290c1f96e2e59","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/abd26515d4b767ba48241eea77b28ce0872aef3e","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/beee482cc4c9a6b1dcffb2e190b4fd8782258678","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/de4f5ed63b8a199704d8cdcbf810309d7eb4b36b","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00243,"epssPercentile":0.15744,"ingestedAt":"2026-08-05T05:58:02.923Z","slug":"CVE-2023-52606","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/lib: Validate size for vector operations\n\nSome of the fp/vmx code in sstep.c assume a certain maximum size for the\ninstructions being emulated. The size of those operations however is\ndetermined separately in analyse_instr().\n\nAdd a check to validate the assumption on the maximum size of the\noperations, so as to prevent any unintended kernel stack corruption.\n\n## Affected\n\n- `linux_kernel < 4.19.307`\n- `linux_kernel >= 4.20, < 5.4.269`\n- `linux_kernel >= 5.5, < 5.10.210`\n- `linux_kernel >= 5.11, < 5.15.149`\n- `linux_kernel >= 5.16, < 6.1.77`\n- `linux_kernel >= 6.2, < 6.6.16`\n- `linux_kernel >= 6.7, < 6.7.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.7.4`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}