CVE-2024-38541

of: module: add buffer overflow check in of_modalias()

State: Published
Severity: 7.8 High
Published: Jun 19, 2024
Updated: Aug 5, 2026
Reserved: Jun 18, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

of: module: add buffer overflow check in of_modalias()

In of_modalias(), if the buffer happens to be too small even for the 1st snprintf() call, the len parameter will become negative and str parameter (if not NULL initially) will point beyond the buffer's end. Add the buffer overflow check after the 1st snprintf() call and fix such check after the strlen() call (accounting for the terminating NUL char).

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Affected Products

Product	Versions
LinuxLinux	bc575064d688c8933a6ca51429bea9bc63628d3b to before 46795440ef2b4ac919d09310a69a404c5bc90a88Affected bc575064d688c8933a6ca51429bea9bc63628d3b to before 733e62786bdf1b2b9dbb09ba2246313306503414Affected bc575064d688c8933a6ca51429bea9bc63628d3b to before c7f24b7d94549ff4623e8f41ea4d9f5319bd8ac8Affected bc575064d688c8933a6ca51429bea9bc63628d3b to before 5d59fd637a8af42b211a92b2edb2474325b4d488Affected bc575064d688c8933a6ca51429bea9bc63628d3b to before 0b0d5701a8bf02f8fee037e81aacf6746558bfd6Affected bc575064d688c8933a6ca51429bea9bc63628d3b to before ee332023adfd5882808f2dabf037b32d6ce36f9eAffected bc575064d688c8933a6ca51429bea9bc63628d3b to before e45b69360a63165377b30db4a1dfddd89ca18e9aAffected bc575064d688c8933a6ca51429bea9bc63628d3b to before cf7385cb26ac4f0ee6c7385960525ad534323252Affected
LinuxLinux	4.14Affected before 4.14Not affected 5.4.294 through 5.4.Not affected 5.10.238 through 5.10.Not affected 5.15.182 through 5.15.Not affected 6.1.136 through 6.1.Not affected 6.6.33 through 6.6.Not affected 6.8.12 through 6.8.Not affected 6.9.3 through 6.9.*Not affected 6.10 and laterNot affected

Product

Versions

LinuxLinux

bc575064d688c8933a6ca51429bea9bc63628d3b to before 46795440ef2b4ac919d09310a69a404c5bc90a88Affected
bc575064d688c8933a6ca51429bea9bc63628d3b to before 733e62786bdf1b2b9dbb09ba2246313306503414Affected
bc575064d688c8933a6ca51429bea9bc63628d3b to before c7f24b7d94549ff4623e8f41ea4d9f5319bd8ac8Affected
bc575064d688c8933a6ca51429bea9bc63628d3b to before 5d59fd637a8af42b211a92b2edb2474325b4d488Affected
bc575064d688c8933a6ca51429bea9bc63628d3b to before 0b0d5701a8bf02f8fee037e81aacf6746558bfd6Affected
bc575064d688c8933a6ca51429bea9bc63628d3b to before ee332023adfd5882808f2dabf037b32d6ce36f9eAffected
bc575064d688c8933a6ca51429bea9bc63628d3b to before e45b69360a63165377b30db4a1dfddd89ca18e9aAffected
bc575064d688c8933a6ca51429bea9bc63628d3b to before cf7385cb26ac4f0ee6c7385960525ad534323252Affected

LinuxLinux

4.14Affected
before 4.14Not affected
5.4.294 through 5.4.*Not affected
5.10.238 through 5.10.*Not affected
5.15.182 through 5.15.*Not affected
6.1.136 through 6.1.*Not affected
6.6.33 through 6.6.*Not affected
6.8.12 through 6.8.*Not affected
6.9.3 through 6.9.*Not affected
6.10 and laterNot affected

References

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