ghsa-ghff-7r8p-2pr4
Vulnerability from github
Published
2024-11-09 12:30
Modified
2024-11-13 18:31
Severity ?
Details
In the Linux kernel, the following vulnerability has been resolved:
iio: gts-helper: Fix memory leaks in iio_gts_build_avail_scale_table()
modprobe iio-test-gts and rmmod it, then the following memory leak occurs:
unreferenced object 0xffffff80c810be00 (size 64):
comm "kunit_try_catch", pid 1654, jiffies 4294913981
hex dump (first 32 bytes):
02 00 00 00 08 00 00 00 20 00 00 00 40 00 00 00 ........ ...@...
80 00 00 00 00 02 00 00 00 04 00 00 00 08 00 00 ................
backtrace (crc a63d875e):
[<0000000028c1b3c2>] kmemleak_alloc+0x34/0x40
[<000000001d6ecc87>] __kmalloc_noprof+0x2bc/0x3c0
[<00000000393795c1>] devm_iio_init_iio_gts+0x4b4/0x16f4
[<0000000071bb4b09>] 0xffffffdf052a62e0
[<000000000315bc18>] 0xffffffdf052a6488
[<00000000f9dc55b5>] kunit_try_run_case+0x13c/0x3ac
[<00000000175a3fd4>] kunit_generic_run_threadfn_adapter+0x80/0xec
[<00000000f505065d>] kthread+0x2e8/0x374
[<00000000bbfb0e5d>] ret_from_fork+0x10/0x20
unreferenced object 0xffffff80cbfe9e70 (size 16):
comm "kunit_try_catch", pid 1658, jiffies 4294914015
hex dump (first 16 bytes):
10 00 00 00 40 00 00 00 80 00 00 00 00 00 00 00 ....@...........
backtrace (crc 857f0cb4):
[<0000000028c1b3c2>] kmemleak_alloc+0x34/0x40
[<000000001d6ecc87>] __kmalloc_noprof+0x2bc/0x3c0
[<00000000393795c1>] devm_iio_init_iio_gts+0x4b4/0x16f4
[<0000000071bb4b09>] 0xffffffdf052a62e0
[<000000007d089d45>] 0xffffffdf052a6864
[<00000000f9dc55b5>] kunit_try_run_case+0x13c/0x3ac
[<00000000175a3fd4>] kunit_generic_run_threadfn_adapter+0x80/0xec
[<00000000f505065d>] kthread+0x2e8/0x374
[<00000000bbfb0e5d>] ret_from_fork+0x10/0x20
......
It includes 55 times "size 64" memory leaks, which correspond to 5 times test_init_iio_gain_scale() calls with gts_test_gains size 10 (10size(int)) and gts_test_itimes size 5. It also includes 51 times "size 16" memory leak, which correspond to one time __test_init_iio_gain_scale() call with gts_test_gains_gain_low size 3 (3size(int)) and gts_test_itimes size 5.
The reason is that the per_time_gains[i] is not freed which is allocated in the "gts->num_itime" for loop in iio_gts_build_avail_scale_table().
{ "affected": [], "aliases": [ "CVE-2024-50231" ], "database_specific": { "cwe_ids": [ "CWE-401" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2024-11-09T11:15:09Z", "severity": "MODERATE" }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: gts-helper: Fix memory leaks in iio_gts_build_avail_scale_table()\n\nmodprobe iio-test-gts and rmmod it, then the following memory leak\noccurs:\n\n\tunreferenced object 0xffffff80c810be00 (size 64):\n\t comm \"kunit_try_catch\", pid 1654, jiffies 4294913981\n\t hex dump (first 32 bytes):\n\t 02 00 00 00 08 00 00 00 20 00 00 00 40 00 00 00 ........ ...@...\n\t 80 00 00 00 00 02 00 00 00 04 00 00 00 08 00 00 ................\n\t backtrace (crc a63d875e):\n\t [\u003c0000000028c1b3c2\u003e] kmemleak_alloc+0x34/0x40\n\t [\u003c000000001d6ecc87\u003e] __kmalloc_noprof+0x2bc/0x3c0\n\t [\u003c00000000393795c1\u003e] devm_iio_init_iio_gts+0x4b4/0x16f4\n\t [\u003c0000000071bb4b09\u003e] 0xffffffdf052a62e0\n\t [\u003c000000000315bc18\u003e] 0xffffffdf052a6488\n\t [\u003c00000000f9dc55b5\u003e] kunit_try_run_case+0x13c/0x3ac\n\t [\u003c00000000175a3fd4\u003e] kunit_generic_run_threadfn_adapter+0x80/0xec\n\t [\u003c00000000f505065d\u003e] kthread+0x2e8/0x374\n\t [\u003c00000000bbfb0e5d\u003e] ret_from_fork+0x10/0x20\n\tunreferenced object 0xffffff80cbfe9e70 (size 16):\n\t comm \"kunit_try_catch\", pid 1658, jiffies 4294914015\n\t hex dump (first 16 bytes):\n\t 10 00 00 00 40 00 00 00 80 00 00 00 00 00 00 00 ....@...........\n\t backtrace (crc 857f0cb4):\n\t [\u003c0000000028c1b3c2\u003e] kmemleak_alloc+0x34/0x40\n\t [\u003c000000001d6ecc87\u003e] __kmalloc_noprof+0x2bc/0x3c0\n\t [\u003c00000000393795c1\u003e] devm_iio_init_iio_gts+0x4b4/0x16f4\n\t [\u003c0000000071bb4b09\u003e] 0xffffffdf052a62e0\n\t [\u003c000000007d089d45\u003e] 0xffffffdf052a6864\n\t [\u003c00000000f9dc55b5\u003e] kunit_try_run_case+0x13c/0x3ac\n\t [\u003c00000000175a3fd4\u003e] kunit_generic_run_threadfn_adapter+0x80/0xec\n\t [\u003c00000000f505065d\u003e] kthread+0x2e8/0x374\n\t [\u003c00000000bbfb0e5d\u003e] ret_from_fork+0x10/0x20\n\t......\n\nIt includes 5*5 times \"size 64\" memory leaks, which correspond to 5 times\ntest_init_iio_gain_scale() calls with gts_test_gains size 10 (10*size(int))\nand gts_test_itimes size 5. It also includes 5*1 times \"size 16\"\nmemory leak, which correspond to one time __test_init_iio_gain_scale()\ncall with gts_test_gains_gain_low size 3 (3*size(int)) and gts_test_itimes\nsize 5.\n\nThe reason is that the per_time_gains[i] is not freed which is allocated in\nthe \"gts-\u003enum_itime\" for loop in iio_gts_build_avail_scale_table().", "id": "GHSA-ghff-7r8p-2pr4", "modified": "2024-11-13T18:31:53Z", "published": "2024-11-09T12:30:48Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50231" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/16e41593825c3044efca0eb34b2d6ffba306e4ec" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/38d6e8be234d87b0eedca50309e25051888b39d1" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/691e79ffc42154a9c91dc3b7e96a307037b4be74" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "type": "CVSS_V3" } ] }
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