CVE-2023-53637
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
media: i2c: ov772x: Fix memleak in ov772x_probe()
A memory leak was reported when testing ov772x with bpf mock device:
The reason is that if priv->hdl.error is set, ov772x_probe() jumps to the error_mutex_destroy without doing v4l2_ctrl_handler_free(), and all resources allocated in v4l2_ctrl_handler_init() and v4l2_ctrl_new_std() are leaked.
Detalles técnicos trazas, registros y código del informe original
AssertionError: unreferenced object 0xffff888109afa7a8 (size 8):
comm "python3", pid 279, jiffies 4294805921 (age 20.681s)
hex dump (first 8 bytes):
80 22 88 15 81 88 ff ff ."......
backtrace:
[<000000009990b438>] __kmalloc_node+0x44/0x1b0
[<000000009e32f7d7>] kvmalloc_node+0x34/0x180
[<00000000faf48134>] v4l2_ctrl_handler_init_class+0x11d/0x180 [videodev]
[<00000000da376937>] ov772x_probe+0x1c3/0x68c [ov772x]
[<000000003f0d225e>] i2c_device_probe+0x28d/0x680
[<00000000e0b6db89>] really_probe+0x17c/0x3f0
[<000000001b19fcee>] __driver_probe_device+0xe3/0x170
[<0000000048370519>] driver_probe_device+0x49/0x120
[<000000005ead07a0>] __device_attach_driver+0xf7/0x150
[<0000000043f452b8>] bus_for_each_drv+0x114/0x180
[<00000000358e5596>] __device_attach+0x1e5/0x2d0
[<0000000043f83c5d>] bus_probe_device+0x126/0x140
[<00000000ee0f3046>] device_add+0x810/0x1130
[<00000000e0278184>] i2c_new_client_device+0x359/0x4f0
[<0000000070baf34f>] of_i2c_register_device+0xf1/0x110
[<00000000a9f2159d>] of_i2c_notify+0x100/0x160
unreferenced object 0xffff888119825c00 (size 256):
comm "python3", pid 279, jiffies 4294805921 (age 20.681s)
hex dump (first 32 bytes):
00 b4 a5 17 81 88 ff ff 00 5e 82 19 81 88 ff ff .........^......
10 5c 82 19 81 88 ff ff 10 5c 82 19 81 88 ff ff .\.......\......
backtrace:
[<000000009990b438>] __kmalloc_node+0x44/0x1b0
[<000000009e32f7d7>] kvmalloc_node+0x34/0x180
[<0000000073d88e0b>] v4l2_ctrl_new.cold+0x19b/0x86f [videodev]
[<00000000b1f576fb>] v4l2_ctrl_new_std+0x16f/0x210 [videodev]
[<00000000caf7ac99>] ov772x_probe+0x1fa/0x68c [ov772x]
[<000000003f0d225e>] i2c_device_probe+0x28d/0x680
[<00000000e0b6db89>] really_probe+0x17c/0x3f0
[<000000001b19fcee>] __driver_probe_device+0xe3/0x170
[<0000000048370519>] driver_probe_device+0x49/0x120
[<000000005ead07a0>] __device_attach_driver+0xf7/0x150
[<0000000043f452b8>] bus_for_each_drv+0x114/0x180
[<00000000358e5596>] __device_attach+0x1e5/0x2d0
[<0000000043f83c5d>] bus_probe_device+0x126/0x140
[<00000000ee0f3046>] device_add+0x810/0x1130
[<00000000e0278184>] i2c_new_client_device+0x359/0x4f0
[<0000000070baf34f>] of_i2c_register_device+0xf1/0x110CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.20%
- Percentil entre todas las CVEs puntuadas: 9
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-401
Referencias
- https://git.kernel.org/stable/c/1da495101ef7507eb4f4b1dbec2874d740eff251
- https://git.kernel.org/stable/c/448ce1cd50387b1345ec14eb191ef05f7afc2a26
- https://git.kernel.org/stable/c/7485edb2b6ca5960205c0a49bedfd09bba30e521
- https://git.kernel.org/stable/c/ac93f8ac66e60227bed42d5a023f0e6c15b52c0a
- https://git.kernel.org/stable/c/c86d760c1c6855a6131e78d0ddacc48c79324ac3
- https://git.kernel.org/stable/c/cc3b6011d7a9f149489eb9420c6305a779162c57
- https://git.kernel.org/stable/c/dfaafeb8e9537969e8dba75491f732478c7fa9d6
JSON original (NVD)
Mostrar
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
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"description": [
{
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"value": "CWE-401"
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: i2c: ov772x: Fix memleak in ov772x_probe()\n\nA memory leak was reported when testing ov772x with bpf mock device:\n\nAssertionError: unreferenced object 0xffff888109afa7a8 (size 8):\n comm \"python3\", pid 279, jiffies 4294805921 (age 20.681s)\n hex dump (first 8 bytes):\n 80 22 88 15 81 88 ff ff .\"......\n backtrace:\n [<000000009990b438>] __kmalloc_node+0x44/0x1b0\n [<000000009e32f7d7>] kvmalloc_node+0x34/0x180\n [<00000000faf48134>] v4l2_ctrl_handler_init_class+0x11d/0x180 [videodev]\n [<00000000da376937>] ov772x_probe+0x1c3/0x68c [ov772x]\n [<000000003f0d225e>] i2c_device_probe+0x28d/0x680\n [<00000000e0b6db89>] really_probe+0x17c/0x3f0\n [<000000001b19fcee>] __driver_probe_device+0xe3/0x170\n [<0000000048370519>] driver_probe_device+0x49/0x120\n [<000000005ead07a0>] __device_attach_driver+0xf7/0x150\n [<0000000043f452b8>] bus_for_each_drv+0x114/0x180\n [<00000000358e5596>] __device_attach+0x1e5/0x2d0\n [<0000000043f83c5d>] bus_probe_device+0x126/0x140\n [<00000000ee0f3046>] device_add+0x810/0x1130\n [<00000000e0278184>] i2c_new_client_device+0x359/0x4f0\n [<0000000070baf34f>] of_i2c_register_device+0xf1/0x110\n [<00000000a9f2159d>] of_i2c_notify+0x100/0x160\nunreferenced object 0xffff888119825c00 (size 256):\n comm \"python3\", pid 279, jiffies 4294805921 (age 20.681s)\n hex dump (first 32 bytes):\n 00 b4 a5 17 81 88 ff ff 00 5e 82 19 81 88 ff ff .........^......\n 10 5c 82 19 81 88 ff ff 10 5c 82 19 81 88 ff ff .\\.......\\......\n backtrace:\n [<000000009990b438>] __kmalloc_node+0x44/0x1b0\n [<000000009e32f7d7>] kvmalloc_node+0x34/0x180\n [<0000000073d88e0b>] v4l2_ctrl_new.cold+0x19b/0x86f [videodev]\n [<00000000b1f576fb>] v4l2_ctrl_new_std+0x16f/0x210 [videodev]\n [<00000000caf7ac99>] ov772x_probe+0x1fa/0x68c [ov772x]\n [<000000003f0d225e>] i2c_device_probe+0x28d/0x680\n [<00000000e0b6db89>] really_probe+0x17c/0x3f0\n [<000000001b19fcee>] __driver_probe_device+0xe3/0x170\n [<0000000048370519>] driver_probe_device+0x49/0x120\n [<000000005ead07a0>] __device_attach_driver+0xf7/0x150\n [<0000000043f452b8>] bus_for_each_drv+0x114/0x180\n [<00000000358e5596>] __device_attach+0x1e5/0x2d0\n [<0000000043f83c5d>] bus_probe_device+0x126/0x140\n [<00000000ee0f3046>] device_add+0x810/0x1130\n [<00000000e0278184>] i2c_new_client_device+0x359/0x4f0\n [<0000000070baf34f>] of_i2c_register_device+0xf1/0x110\n\nThe reason is that if priv->hdl.error is set, ov772x_probe() jumps to the\nerror_mutex_destroy without doing v4l2_ctrl_handler_free(), and all\nresources allocated in v4l2_ctrl_handler_init() and v4l2_ctrl_new_std()\nare leaked."
}
],
"lastModified": "2026-06-17T06:45:46.150",
"configurations": [
{
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}