CVE-2023-53220
In the Linux kernel, the following vulnerability has been resolved: media: az6007: Fix null-ptr-deref in az6007_i2c_xfer() In az6007_i2c_xfer, msg is controlled by user.
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: media: az6007: Fix null-ptr-deref in az6007_i2c_xfer() In az6007_i2c_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach az6007_i2c_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.16% probability · 5th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3fPatch
- https://git.kernel.org/stable/c/5b1ea100ad3695025969dc4693f307877fb688d6Patch
- https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cbaPatch
- https://git.kernel.org/stable/c/991c77fe18c6f374bbf83376f8c42550aa565662Patch
- https://git.kernel.org/stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7Patch
- https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240Patch
- https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2Patch
- https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.