mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
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53 lines
2.6 KiB
JSON
53 lines
2.6 KiB
JSON
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{
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"id": "CVE-2022-49080",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2025-02-26T07:00:45.347",
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"lastModified": "2025-02-26T07:00:45.347",
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"vulnStatus": "Received",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mempolicy: fix mpol_new leak in shared_policy_replace\n\nIf mpol_new is allocated but not used in restart loop, mpol_new will be\nfreed via mpol_put before returning to the caller. But refcnt is not\ninitialized yet, so mpol_put could not do the right things and might\nleak the unused mpol_new. This would happen if mempolicy was updated on\nthe shared shmem file while the sp->lock has been dropped during the\nmemory allocation.\n\nThis issue could be triggered easily with the below code snippet if\nthere are many processes doing the below work at the same time:\n\n shmid = shmget((key_t)5566, 1024 * PAGE_SIZE, 0666|IPC_CREAT);\n shm = shmat(shmid, 0, 0);\n loop many times {\n mbind(shm, 1024 * PAGE_SIZE, MPOL_LOCAL, mask, maxnode, 0);\n mbind(shm + 128 * PAGE_SIZE, 128 * PAGE_SIZE, MPOL_DEFAULT, mask,\n maxnode, 0);\n }"
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}
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],
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"metrics": {},
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/198932a14aeb19a15cf19e51e151d023bc4cd648",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/25f506273b6ae806fd46bfcb6fdaa5b9ec81a05b",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/39a32f3c06f6d68a530bf9612afa19f50f12e93d",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/4ad099559b00ac01c3726e5c95dc3108ef47d03e",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/5e16dc5378abd749a836daa9ee4ab2c8d2668999",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/6e00309ac716fa8225f0cbde2cd9c24f0e74ee21",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/8510c2346d9e47a72b7f018a36ef0c39483e53d6",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/f7e183b0a7136b6dc9c7b9b2a85a608a8feba894",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/fe39ac59dbbf893b73b24e3184161d0bd06d6651",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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}
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]
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}
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