CVE-2021-47153
Vulnerability from cvelistv5
Published
2024-03-25 09:07
Modified
2024-12-19 07:36
Severity ?
6.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: i2c: i801: Don't generate an interrupt on bus reset Now that the i2c-i801 driver supports interrupts, setting the KILL bit in a attempt to recover from a timed out transaction triggers an interrupt. Unfortunately, the interrupt handler (i801_isr) is not prepared for this situation and will try to process the interrupt as if it was signaling the end of a successful transaction. In the case of a block transaction, this can result in an out-of-range memory access. This condition was reproduced several times by syzbot: https://syzkaller.appspot.com/bug?extid=ed71512d469895b5b34e https://syzkaller.appspot.com/bug?extid=8c8dedc0ba9e03f6c79e https://syzkaller.appspot.com/bug?extid=c8ff0b6d6c73d81b610e https://syzkaller.appspot.com/bug?extid=33f6c360821c399d69eb https://syzkaller.appspot.com/bug?extid=be15dc0b1933f04b043a https://syzkaller.appspot.com/bug?extid=b4d3fd1dfd53e90afd79 So disable interrupts while trying to reset the bus. Interrupts will be enabled again for the following transaction.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/04cc05e3716ae31b17ecdab7bc55c8170def1b8b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/09c9e79f4c10cfb6b9e0e1b4dd355232e4b5a3b3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1f583d3813f204449037cd2acbfc09168171362a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b523feb7e8e44652f92f3babb953a976e7ccbbef
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c70e1ba2e7e65255a0ce004f531dd90dada97a8c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dfa8929e117b0228a7765f5c3f5988a4a028f3c6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e4d8716c3dcec47f1557024add24e1f3c09eb24b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f9469082126cebb7337db3992d143f5e4edfe629
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/04cc05e3716ae31b17ecdab7bc55c8170def1b8b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/09c9e79f4c10cfb6b9e0e1b4dd355232e4b5a3b3
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1f583d3813f204449037cd2acbfc09168171362a
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b523feb7e8e44652f92f3babb953a976e7ccbbef
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c70e1ba2e7e65255a0ce004f531dd90dada97a8c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/dfa8929e117b0228a7765f5c3f5988a4a028f3c6
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e4d8716c3dcec47f1557024add24e1f3c09eb24b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f9469082126cebb7337db3992d143f5e4edfe629
Impacted products
Vendor Product Version
Linux Linux Version: 3.6
Show details on NVD website

To clipboard 

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In the case\\nof a block transaction, this can result in an out-of-range memory\\naccess.\\n\\nThis condition was reproduced several times by syzbot:\\nhttps://syzkaller.appspot.com/bug?extid=ed71512d469895b5b34e\\nhttps://syzkaller.appspot.com/bug?extid=8c8dedc0ba9e03f6c79e\\nhttps://syzkaller.appspot.com/bug?extid=c8ff0b6d6c73d81b610e\\nhttps://syzkaller.appspot.com/bug?extid=33f6c360821c399d69eb\\nhttps://syzkaller.appspot.com/bug?extid=be15dc0b1933f04b043a\\nhttps://syzkaller.appspot.com/bug?extid=b4d3fd1dfd53e90afd79\\n\\nSo disable interrupts while trying to reset the bus. Interrupts will\\nbe enabled again for the following transaction.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: i2c: i801: no genera una interrupci\u00f3n al restablecer el bus Ahora que el controlador i2c-i801 admite interrupciones, configurar el bit KILL en un intento de recuperarse de una transacci\u00f3n con tiempo de espera agotado se activa una interrupci\u00f3n. Desafortunadamente, el controlador de interrupciones (i801_isr) no est\u00e1 preparado para esta situaci\u00f3n e intentar\u00e1 procesar la interrupci\u00f3n como si estuviera indicando el final de una transacci\u00f3n exitosa. En el caso de una transacci\u00f3n en bloque, esto puede resultar en un acceso a la memoria fuera de rango. Esta condici\u00f3n fue reproducida varias veces por syzbot: https://syzkaller.appspot.com/bug?extid=ed71512d469895b5b34e https://syzkaller.appspot.com/bug?extid=8c8dedc0ba9e03f6c79e https://syzkaller.appspot.com/bug ?extid=c8ff0b6d6c73d81b610e https://syzkaller.appspot.com/bug?extid=33f6c360821c399d69eb https://syzkaller.appspot.com/bug?extid=be15dc0b1933f04b043a https://syzkaller.appspot.com/bug?extid=b 4d3fd1dfd53e90afd79 Entonces deshabilite las interrupciones al intentar restablecer el bus. Las interrupciones se habilitar\u00e1n nuevamente para la siguiente transacci\u00f3n.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":6.0,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.8,\"impactScore\":5.2}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/04cc05e3716ae31b17ecdab7bc55c8170def1b8b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/09c9e79f4c10cfb6b9e0e1b4dd355232e4b5a3b3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1f583d3813f204449037cd2acbfc09168171362a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b523feb7e8e44652f92f3babb953a976e7ccbbef\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c70e1ba2e7e65255a0ce004f531dd90dada97a8c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dfa8929e117b0228a7765f5c3f5988a4a028f3c6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e4d8716c3dcec47f1557024add24e1f3c09eb24b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f9469082126cebb7337db3992d143f5e4edfe629\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/04cc05e3716ae31b17ecdab7bc55c8170def1b8b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/09c9e79f4c10cfb6b9e0e1b4dd355232e4b5a3b3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/1f583d3813f204449037cd2acbfc09168171362a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/b523feb7e8e44652f92f3babb953a976e7ccbbef\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/c70e1ba2e7e65255a0ce004f531dd90dada97a8c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/dfa8929e117b0228a7765f5c3f5988a4a028f3c6\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/e4d8716c3dcec47f1557024add24e1f3c09eb24b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/f9469082126cebb7337db3992d143f5e4edfe629\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
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}


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