CVE-2024-26818: tools/rtla: Fix clang warning about mount_point var size
First published: Wed Apr 17 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: tools/rtla: Fix clang warning about mount_point var size clang is reporting this warning: $ make HOSTCC=clang CC=clang LLVM_IAS=1 [...] clang -O -g -DVERSION=\"6.8.0-rc3\" -flto=auto -fexceptions -fstack-protector-strong -fasynchronous-unwind-tables -fstack-clash-protection -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS $(pkg-config --cflags libtracefs) -c -o src/utils.o src/utils.c src/utils.c:548:66: warning: 'fscanf' may overflow; destination buffer in argument 3 has size 1024, but the corresponding specifier may require size 1025 [-Wfortify-source] 548 | while (fscanf(fp, "%*s %" STR(MAX_PATH) "s %99s %*s %*d %*d\n", mount_point, type) == 2) { | ^ Increase mount_point variable size to MAX_PATH+1 to avoid the overflow.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=6.5<6.6.18 | |
| Linux Kernel | >=6.7<6.7.6 | |
| Linux Kernel | =6.8-rc1 | |
| Linux Kernel | =6.8-rc2 | |
| Linux Kernel | =6.8-rc3 | |
| Linux Kernel | =6.8-rc4 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.22-1 6.12.25-1 |
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Reference Links
- https://git.kernel.org/stable/c/30369084ac6e27479a347899e74f523e6ca29b89
- https://git.kernel.org/stable/c/6bdd43f62ab3bb5a306af7f0ab857af45777f5a8
- https://git.kernel.org/stable/c/8a585914c266dc044f53b5c83c170f79b45fcf9a
- https://launchpad.net/bugs/cve/CVE-2024-26818
- https://git.kernel.org/linus/30369084ac6e27479a347899e74f523e6ca29b89
- https://security-tracker.debian.org/tracker/CVE-2024-26818
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26818
- https://nvd.nist.gov/vuln/detail/CVE-2024-26818
- https://ubuntu.com/security/CVE-2024-26818
Frequently Asked Questions
What is the severity of CVE-2024-26818?
CVE-2024-26818 has a high severity rating due to the potential impact on system stability and performance.
How do I fix CVE-2024-26818?
To fix CVE-2024-26818, update the Linux kernel to one of the following versions: 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, 6.12.10-1, or 6.12.11-1.
Which Linux distributions are affected by CVE-2024-26818?
CVE-2024-26818 affects Debian-based Linux distributions that use the specified kernel versions.
What is the nature of the issue described in CVE-2024-26818?
CVE-2024-26818 is related to a warning generated by clang regarding the size of a variable in the Linux kernel.
Is CVE-2024-26818 a critical vulnerability?
While CVE-2024-26818 is significant, it is categorized as high severity rather than critical, and users should still prioritize updating their systems.
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