{"id":"CVE-2026-93039","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: meson: Keep link pointers valid on realloc failure\n\nmeson_card_reallocate_links() grows the DAI link and private data\narrays with two consecutive krealloc() calls…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: meson: Keep link pointers valid on realloc failure\n\nmeson_card_reallocate_links() grows the DAI link and private data\narrays with two consecutive krealloc() calls…","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b < de33afc57f24538186bccf4c4f6c65dd38634fd8","Linux >= 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b < 1c1485343b7c1c39dab7ecb9cd16ba49fd0ce642","Linux >= 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b < 8db0a0fc84e80aa9924e0833aef6cc95df94e5a7","Linux >= 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b < 41e92e0caa1fe3df2efaca346bfcaeb7fb9826ab","Linux >= 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b < 0b30fbe6bf7cf6499b19dd886f466e7c9e820089","Linux >= 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b < 8fec16898f184e5f8f8fdd09ff1ced2bd7ffc13d","Linux >= 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b < 5ed1b048527bebe4529eb6e01c34dcc5d97ba5fe","Linux >= 7864a79f37b55769b817d5e6c5ae0ca4bfdba93b < 2aaa41cf974f83a6fb105422bac4e2f107150774","Linux 4.19"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:18:18.750","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93039","references":[{"url":"https://git.kernel.org/stable/c/0b30fbe6bf7cf6499b19dd886f466e7c9e820089","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1c1485343b7c1c39dab7ecb9cd16ba49fd0ce642","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2aaa41cf974f83a6fb105422bac4e2f107150774","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/41e92e0caa1fe3df2efaca346bfcaeb7fb9826ab","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5ed1b048527bebe4529eb6e01c34dcc5d97ba5fe","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8db0a0fc84e80aa9924e0833aef6cc95df94e5a7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8fec16898f184e5f8f8fdd09ff1ced2bd7ffc13d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/de33afc57f24538186bccf4c4f6c65dd38634fd8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00157,"epssPercentile":0.0525,"ingestedAt":"2026-09-17T16:21:47.776Z","slug":"CVE-2026-93039","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nASoC: meson: Keep link pointers valid on realloc failure\n\nmeson_card_reallocate_links() grows the DAI link and private data\narrays with two consecutive krealloc() calls and updates the owner\npointers only after both calls have succeeded.\n\nA successful krealloc() may move the data: it frees the old block and\nreturns a new one. When that happens for the link array and the second\nkrealloc() then fails, card->dai_link still points to the block that\nkrealloc() already freed, and the error path frees the new block too.\nThe probe error path then calls meson_card_clean_references(), which\ndereferences card->dai_link and kfree()s it again, resulting in a\nuse-after-free and a double free.\n\nCommit card->dai_link and card->num_links right after the first\nkrealloc() succeeds, so the pointer always refers to a valid allocation\nthat meson_card_clean_references() can walk and free. krealloc() with\n__GFP_ZERO zero-initializes the added entries, so walking them on the\nerror path is safe. With both failure paths reduced to a plain return,\ndrop the goto labels and the error message.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207351,"id":"CVE-2026-93039","ts":1789757341162,"field":"cvss","old":null,"new":"7.4"},{"seq":207350,"id":"CVE-2026-93039","ts":1789757341162,"field":"severity","old":"none","new":"high"}]}