CVE-2023-52915: media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer
Vulnerability summary
CVE-2023-52915 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11.4% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 12 · Related 12Timeline
- 06-09-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer In af9035_i2c_master_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 af9035_i2c_master_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 metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.21%
Chance of exploitation in the next 30 days
Percentile
11%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.21% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu117 products
- linuxAll versions (No fix recorded) | < 5.4.0-169.187 | < 5.15.0-94.104
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.4.0-1116.126 | < 5.15.0-1053.58
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 7f882c2e353ca58695e9b4fcc9e97a9d4cbcf273, < b2f54ed7739dfdf42c4df0a11131aad7c8635464 | ≥ 7f882c2e353ca58695e9b4fcc9e97a9d4cbcf273, < fa58d9db5cad4bb7bb694b6837e3b96d87554f2b | ≥ 7f882c2e353ca58695e9b4fcc9e97a9d4cbcf273, < b49c6e5dd236787f13a062ec528d724169f11152 | ≥ 7f882c2e353ca58695e9b4fcc9e97a9d4cbcf273, < 6c01ef65de0b321b2db1ef9abf8f1d15862b937e | ≥ 7f882c2e353ca58695e9b4fcc9e97a9d4cbcf273, < d9ef84a7c222497ecb5fdf93361c76931804825e | ≥ 7f882c2e353ca58695e9b4fcc9e97a9d4cbcf273, < 0143f282b15f7cedc0392ea10050fb6000fd16e6 | ≥ 7f882c2e353ca58695e9b4fcc9e97a9d4cbcf273, < 41b7181a40af84448a2b144fb02d8bf32b7e9a23 | ≥ 7f882c2e353ca58695e9b4fcc9e97a9d4cbcf273, < 7bf744f2de0a848fb1d717f5831b03db96feae89 | 3.5
- linux_kernel< 4.14.326 | ≥ 4.15, < 4.19.295 | ≥ 4.20, < 5.4.257 | ≥ 5.5, < 5.10.197 | ≥ 5.11, < 5.15.133 | ≥ 5.16, < 6.1.55 | ≥ 6.2, < 6.5.5
Debian1 product
- linux< 6.1.55-1 | < 6.5.6-1
3 vendors · 120 products
