CVE-2026-89896 (GCVE-0-2026-89896)
Vulnerability from cvelistv5
Published
2026-09-16 10:31
Modified
2026-10-19 08:54
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: media: cedrus: fix memory leak in cedrus_init_ctrls() In cedrus_init_ctrls(), the V4L2 control handler is initialized before allocating memory for ctx->ctrls. If this allocation fails, the function returns -ENOMEM without freeing the previously allocated handler resources, leading to a memory leak. Fix this by calling v4l2_ctrl_handler_free() on the ctx->ctrls allocation failure path. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1.1. An x86_64 allyesconfig build showed no new warnings. As we do not have an Allwinner SoC or board with a Cedrus VPU available to test with, no runtime testing was able to be performed.
References
Impacted products
Vendor Product Version
Linux Linux Version: 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1
Version: 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1
Version: 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1
Version: 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1
Version: 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1
Version: 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1
Version: 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1
Version: 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1
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{
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          "programFiles": [
            "drivers/staging/media/sunxi/cedrus/cedrus.c"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cedrus: fix memory leak in cedrus_init_ctrls()\n\nIn cedrus_init_ctrls(), the V4L2 control handler is initialized before\nallocating memory for ctx-\u003ectrls. If this allocation fails, the function\nreturns -ENOMEM without freeing the previously allocated handler\nresources, leading to a memory leak.\n\nFix this by calling v4l2_ctrl_handler_free() on the ctx-\u003ectrls allocation\nfailure path.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1.1.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have an\nAllwinner SoC or board with a Cedrus VPU available to test with, no\nruntime testing was able to be performed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:54:29.201Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/6fabacc3b79a528450aef4c32464da2ec681049e"
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        {
          "url": "https://git.kernel.org/stable/c/729a1ffab968b3c493f61d1cd683f5bafec500ea"
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        {
          "url": "https://git.kernel.org/stable/c/ce5693b6e3a693fcdc3800af309363f6250104c8"
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        {
          "url": "https://git.kernel.org/stable/c/22441be29ec27c693f40c1ef499093275ef529d1"
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        {
          "url": "https://git.kernel.org/stable/c/79fd0b0161506fc9507bf7a6fe4c975a857a5be8"
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        {
          "url": "https://git.kernel.org/stable/c/f78cf36cabf911da348ea80e4e9f430d74f6905c"
        },
        {
          "url": "https://git.kernel.org/stable/c/81aa608ac3a56cdd4aab0bd12442ed529a24ba31"
        },
        {
          "url": "https://git.kernel.org/stable/c/9df2fbe563194da1967a5db083442186c1323efe"
        }
      ],
      "title": "media: cedrus: fix memory leak in cedrus_init_ctrls()",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89896",
    "datePublished": "2026-09-16T10:31:57.504Z",
    "dateReserved": "2026-09-11T19:38:34.773Z",
    "dateUpdated": "2026-10-19T08:54:29.201Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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