CVE-2022-49830
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/drv: Fix potential memory leak in drm_dev_init() drm_dev_init() will add drm_dev_init_release() as a callback. When drmm_add_action() failed, the release function won't be added. As the result, the ref cnt added by device_get() in drm_dev_init() won't be put by drm_dev_init_release(), which leads to the memleak. Use drmm_add_action_or_reset() instead of drmm_add_action() to prevent memleak. unreferenced object 0xffff88810bc0c800 (size 2048): comm "modprobe", pid 8322, jiffies 4305809845 (age 15.292s) hex dump (first 32 bytes): e8 cc c0 0b 81 88 ff ff ff ff ff ff 00 00 00 00 ................ 20 24 3c 0c 81 88 ff ff 18 c8 c0 0b 81 88 ff ff $<............. backtrace: [<000000007251f72d>] __kmalloc+0x4b/0x1c0 [<0000000045f21f26>] platform_device_alloc+0x2d/0xe0 [<000000004452a479>] platform_device_register_full+0x24/0x1c0 [<0000000089f4ea61>] 0xffffffffa0736051 [<00000000235b2441>] do_one_initcall+0x7a/0x380 [<0000000001a4a177>] do_init_module+0x5c/0x230 [<000000002bf8a8e2>] load_module+0x227d/0x2420 [<00000000637d6d0a>] __do_sys_finit_module+0xd5/0x140 [<00000000c99fc324>] do_syscall_64+0x3f/0x90 [<000000004d85aa77>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-05-01 15:16:06.470000
Last modified
2026-11-05 20:17:15.203000
View original CVE JSON
{
"id": "CVE-2022-49830",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-05-01T15:16:06.470",
"lastModified": "2026-11-05T20:17:15.203",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/drv: Fix potential memory leak in drm_dev_init()\n\ndrm_dev_init() will add drm_dev_init_release() as a callback. When\ndrmm_add_action() failed, the release function won't be added. As the\nresult, the ref cnt added by device_get() in drm_dev_init() won't be put\nby drm_dev_init_release(), which leads to the memleak. Use\ndrmm_add_action_or_reset() instead of drmm_add_action() to prevent\nmemleak.\n\nunreferenced object 0xffff88810bc0c800 (size 2048):\n comm \"modprobe\", pid 8322, jiffies 4305809845 (age 15.292s)\n hex dump (first 32 bytes):\n e8 cc c0 0b 81 88 ff ff ff ff ff ff 00 00 00 00 ................\n 20 24 3c 0c 81 88 ff ff 18 c8 c0 0b 81 88 ff ff $<.............\n backtrace:\n [<000000007251f72d>] __kmalloc+0x4b/0x1c0\n [<0000000045f21f26>] platform_device_alloc+0x2d/0xe0\n [<000000004452a479>] platform_device_register_full+0x24/0x1c0\n [<0000000089f4ea61>] 0xffffffffa0736051\n [<00000000235b2441>] do_one_initcall+0x7a/0x380\n [<0000000001a4a177>] do_init_module+0x5c/0x230\n [<000000002bf8a8e2>] load_module+0x227d/0x2420\n [<00000000637d6d0a>] __do_sys_finit_module+0xd5/0x140\n [<00000000c99fc324>] do_syscall_64+0x3f/0x90\n [<000000004d85aa77>] entry_SYSCALL_64_after_hwframe+0x63/0xcd"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/drv: Se solucionó una posible fuga de memoria en drm_dev_init(). drm_dev_init() añadirá drm_dev_init_release() como devolución de llamada. Si drmm_add_action() falla, la función de liberación no se añadirá. Como resultado, el valor de referencia añadido por device_get() en drm_dev_init() no se incluirá en drm_dev_init_release(), lo que provoca la fuga de memoria. Utilice drmm_add_action_or_reset() en lugar de drmm_add_action() para evitar la fuga de memoria. objeto sin referencia 0xffff88810bc0c800 (tamaño 2048): comm \"modprobe\", pid 8322, jiffies 4305809845 (antigüedad 15.292s) volcado hexadecimal (primeros 32 bytes): e8 cc c0 0b 81 88 ff ff ff ff ff ff ff 00 00 00 00 ................ 20 24 3c 0c 81 88 ff ff 18 c8 c0 0b 81 88 ff ff $<............. backtrace: [<000000007251f72d>] __kmalloc+0x4b/0x1c0 [<0000000045f21f26>] platform_device_alloc+0x2d/0xe0 [<000000004452a479>] platform_device_register_full+0x24/0x1c0 [<0000000089f4ea61>] 0xffffffffa0736051 [<00000000235b2441>] do_one_initcall+0x7a/0x380 [<0000000001a4a177>] do_init_module+0x5c/0x230 [<000000002bf8a8e2>] load_module+0x227d/0x2420 [<00000000637d6d0a>] __do_sys_finit_module+0xd5/0x140 [<00000000c99fc324>] do_syscall_64+0x3f/0x90 [<000000004d85aa77>] entry_SYSCALL_64_after_hwframe+0x63/0xcd "
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"type": "Primary",
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"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
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"id": "CVE-2022-49830",
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"type": "Primary",
"description": [
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