CVE-2021-47153
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
i2c: i801: Don't generate an interrupt on bus reset
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 636752bcb5177a301d0266270661581de8624828 | affected | git | f9469082126cebb7337db3992d143f5e4edfe629 | Unavailable | None listed |
| 636752bcb5177a301d0266270661581de8624828 | affected | git | 09c9e79f4c10cfb6b9e0e1b4dd355232e4b5a3b3 | Unavailable | None listed |
| 636752bcb5177a301d0266270661581de8624828 | affected | git | dfa8929e117b0228a7765f5c3f5988a4a028f3c6 | Unavailable | None listed |
| 636752bcb5177a301d0266270661581de8624828 | affected | git | c70e1ba2e7e65255a0ce004f531dd90dada97a8c | Unavailable | None listed |
| 636752bcb5177a301d0266270661581de8624828 | affected | git | 04cc05e3716ae31b17ecdab7bc55c8170def1b8b | Unavailable | None listed |
| 636752bcb5177a301d0266270661581de8624828 | affected | git | b523feb7e8e44652f92f3babb953a976e7ccbbef | Unavailable | None listed |
| 636752bcb5177a301d0266270661581de8624828 | affected | git | 1f583d3813f204449037cd2acbfc09168171362a | Unavailable | None listed |
| 636752bcb5177a301d0266270661581de8624828 | affected | git | e4d8716c3dcec47f1557024add24e1f3c09eb24b | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.6 | Unavailable | None listed |
| 4.4.271 | unaffected | semver | Unavailable | 4.4.* | None listed |
| 4.9.271 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.235 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.193 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.124 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.42 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.12.9 | unaffected | semver | Unavailable | 5.12.* | None listed |
| 5.13 | unaffected | original_commit_for_fix | Unavailable | * | None listed |